Let’s face it, system design is painful. With Leetcode questions, you know the drill — find the algorithm, explain it, code it. With system design, you never know what’ll be asked. Which makes it hard to practice. With system design, you never know what’ll be asked I was in the same boat. So I did a bunch of research and found questions that are being asked but not available easily. Other popular websites give you 12 or so questions to practice, but those are saturated now - everyone knows them. *** drumroll *** *** drumroll *** *** drumroll *** Here are the 45 questions I found and used, along with solutions and company names where they were asked. I am constantly updating and improving this list. Please visit SystemDesign.io for the latest version. SystemDesign.io SystemDesign.io Question 1: Design a Distributed Metrics Logging and Aggregation System Company(s) asked: Google, Facebook, Amazon, eBay, Datadog, Atlassian Company(s) asked Solution(s): Detailed Solution from Google Engineer: https://www.youtube.com/watch?v=p_q-n09B8KAGood overview from Google Engineer: https://www.youtube.com/watch?v=_KoiMoZZ3C8Related — Ad Click Aggregation: https://www.hellointerview.com/learn/system-design/problem-breakdowns/ad-click-aggregatorLeetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/622704/Design-a-system-to-store-and-retrieve-logs-for-all-of-eBay Solution(s): Solution(s): Solution(s): Detailed Solution from Google Engineer: https://www.youtube.com/watch?v=p_q-n09B8KA Detailed Solution from Google Engineer: https://www.youtube.com/watch?v=p_q-n09B8KA https://www.youtube.com/watch?v=p_q-n09B8KA https://www.youtube.com/watch?v=p_q-n09B8KA Good overview from Google Engineer: https://www.youtube.com/watch?v=_KoiMoZZ3C8 Good overview from Google Engineer: https://www.youtube.com/watch?v=_KoiMoZZ3C8 https://www.youtube.com/watch?v=_KoiMoZZ3C8 https://www.youtube.com/watch?v=_KoiMoZZ3C8 Related — Ad Click Aggregation: https://www.hellointerview.com/learn/system-design/problem-breakdowns/ad-click-aggregator Related — Ad Click Aggregation: https://www.hellointerview.com/learn/system-design/problem-breakdowns/ad-click-aggregator https://www.hellointerview.com/learn/system-design/problem-breakdowns/ad-click-aggregator https://www.hellointerview.com/learn/system-design/problem-breakdowns/ad-click-aggregator Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/622704/Design-a-system-to-store-and-retrieve-logs-for-all-of-eBay Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/622704/Design-a-system-to-store-and-retrieve-logs-for-all-of-eBay https://leetcode.com/discuss/interview-question/system-design/622704/Design-a-system-to-store-and-retrieve-logs-for-all-of-eBay https://leetcode.com/discuss/interview-question/system-design/622704/Design-a-system-to-store-and-retrieve-logs-for-all-of-eBay Question 2: Design a Distributed Stream Processing System like Kafka Company(s) asked: Amazon, Microsoft, Wise, Confluent Company(s) asked: Solution(s): Read the original Kafka paper, but don’t feel pressured to complete it: https://notes.stephenholiday.com/Kafka.pdf Great overview: https://medium.com/better-programming/system-design-series-apache-kafka-from-10-000-feet-9c95af56f18dSolution from Meta Engineer: https://www.youtube.com/watch?v=DU8o-OTeoCcGood visualization: https://www.youtube.com/watch?v=HZklgPkboro Solution(s): Solution(s): Read the original Kafka paper, but don’t feel pressured to complete it: https://notes.stephenholiday.com/Kafka.pdf Read the original Kafka paper, but don’t feel pressured to complete it: https://notes.stephenholiday.com/Kafka.pdf https://notes.stephenholiday.com/Kafka.pdf https://notes.stephenholiday.com/Kafka.pdf Great overview: https://medium.com/better-programming/system-design-series-apache-kafka-from-10-000-feet-9c95af56f18d Great overview: https://medium.com/better-programming/system-design-series-apache-kafka-from-10-000-feet-9c95af56f18d https://medium.com/better-programming/system-design-series-apache-kafka-from-10-000-feet-9c95af56f18d https://medium.com/better-programming/system-design-series-apache-kafka-from-10-000-feet-9c95af56f18d Solution from Meta Engineer: https://www.youtube.com/watch?v=DU8o-OTeoCc Solution from Meta Engineer: https://www.youtube.com/watch?v=DU8o-OTeoCc https://www.youtube.com/watch?v=DU8o-OTeoCc https://www.youtube.com/watch?v=DU8o-OTeoCc Good visualization: https://www.youtube.com/watch?v=HZklgPkboro Good visualization: https://www.youtube.com/watch?v=HZklgPkboro https://www.youtube.com/watch?v=HZklgPkboro https://www.youtube.com/watch?v=HZklgPkboro Question 3: Design a Key-Value Store Company(s) asked: Apple, Google, Canva, Avalara, Rubrik, OpenDoor Company(s) asked: Solution(s): Good high level solution: https://www.educative.io/courses/grokking-the-system-design-interview/design-of-a-key-value-store Mock Interview with Microsoft Engineer: https://www.youtube.com/watch?v=6fOoXT1HYxkDetailed Video Series on this: https://www.youtube.com/playlist?list=PL1MM4yIzUdPm2L_Lz8gRa_q6ZElgNoArH Solution(s): Solution(s): Good high level solution: https://www.educative.io/courses/grokking-the-system-design-interview/design-of-a-key-value-store Good high level solution: https://www.educative.io/courses/grokking-the-system-design-interview/design-of-a-key-value-store https://www.educative.io/courses/grokking-the-system-design-interview/design-of-a-key-value-store https://www.educative.io/courses/grokking-the-system-design-interview/design-of-a-key-value-store Mock Interview with Microsoft Engineer: https://www.youtube.com/watch?v=6fOoXT1HYxk Mock Interview with Microsoft Engineer: https://www.youtube.com/watch?v=6fOoXT1HYxk https://www.youtube.com/watch?v=6fOoXT1HYxk https://www.youtube.com/watch?v=6fOoXT1HYxk Detailed Video Series on this: https://www.youtube.com/playlist?list=PL1MM4yIzUdPm2L_Lz8gRa_q6ZElgNoArH Detailed Video Series on this: https://www.youtube.com/playlist?list=PL1MM4yIzUdPm2L_Lz8gRa_q6ZElgNoArH https://www.youtube.com/playlist?list=PL1MM4yIzUdPm2L_Lz8gRa_q6ZElgNoArH https://www.youtube.com/playlist?list=PL1MM4yIzUdPm2L_Lz8gRa_q6ZElgNoArH Question 4: Identify the K Most Shared Articles in Various Time Windows (24 hours, 1 hour, 5 minutes) Company(s) asked: LinkedIn, Facebook, Twitter Company(s) asked: Solution(s): Leetcode discussion: https://leetcode.com/discuss/interview-question/system-design/258398/design-top-shared-post-system-in-5mins1-hour1-day1-week Official Google Mock Interview: https://www.youtube.com/watch?v=S1DvEdR0iUoGreat high level overview: https://mecha-mind.medium.com/system-design-top-k-trending-hashtags-4e12de5bb846Solution from Meta Engineer: https://www.youtube.com/watch?v=1lfktgZ9EeoText solution: https://www.hellointerview.com/learn/system-design/problem-breakdowns/top-k Solution(s): Solution(s): Leetcode discussion: https://leetcode.com/discuss/interview-question/system-design/258398/design-top-shared-post-system-in-5mins1-hour1-day1-week Leetcode discussion: https://leetcode.com/discuss/interview-question/system-design/258398/design-top-shared-post-system-in-5mins1-hour1-day1-week https://leetcode.com/discuss/interview-question/system-design/258398/design-top-shared-post-system-in-5mins1-hour1-day1-week https://leetcode.com/discuss/interview-question/system-design/258398/design-top-shared-post-system-in-5mins1-hour1-day1-week Official Google Mock Interview: https://www.youtube.com/watch?v=S1DvEdR0iUo Official Google Mock Interview: https://www.youtube.com/watch?v=S1DvEdR0iUo https://www.youtube.com/watch?v=S1DvEdR0iUo https://www.youtube.com/watch?v=S1DvEdR0iUo Great high level overview: https://mecha-mind.medium.com/system-design-top-k-trending-hashtags-4e12de5bb846 Great high level overview: https://mecha-mind.medium.com/system-design-top-k-trending-hashtags-4e12de5bb846 https://mecha-mind.medium.com/system-design-top-k-trending-hashtags-4e12de5bb846 https://mecha-mind.medium.com/system-design-top-k-trending-hashtags-4e12de5bb846 Solution from Meta Engineer: https://www.youtube.com/watch?v=1lfktgZ9Eeo Solution from Meta Engineer: https://www.youtube.com/watch?v=1lfktgZ9Eeo https://www.youtube.com/watch?v=1lfktgZ9Eeo https://www.youtube.com/watch?v=1lfktgZ9Eeo Text solution: https://www.hellointerview.com/learn/system-design/problem-breakdowns/top-k Text solution: https://www.hellointerview.com/learn/system-design/problem-breakdowns/top-k https://www.hellointerview.com/learn/system-design/problem-breakdowns/top-k https://www.hellointerview.com/learn/system-design/problem-breakdowns/top-k Question 5: Design an API Rate Limiter Company(s) asked: Amazon, Atlassian, Uber, Patreon, Microsoft, Stripe, Headway, Reputation.com, Pinterest Company(s) asked: Solution(s): Great article + mock interview video: https://www.tryexponent.com/blog/rate-limiter-system-design Great solution by Google engineer: https://www.youtube.com/watch?v=VzW41m4USGsIntro: https://blog.bytebytego.com/p/rate-limiting-fundamentalsGood article on algorithms: https://medium.com/geekculture/system-design-design-a-rate-limiter-81d200c9d392Leetcode discussion: https://leetcode.com/discuss/interview-question/system-design/1616482/System-Design%3A-Rate-Limiter Solution(s): Solution(s): Great article + mock interview video: https://www.tryexponent.com/blog/rate-limiter-system-design Great article + mock interview video: https://www.tryexponent.com/blog/rate-limiter-system-design https://www.tryexponent.com/blog/rate-limiter-system-design https://www.tryexponent.com/blog/rate-limiter-system-design Great solution by Google engineer: https://www.youtube.com/watch?v=VzW41m4USGs Great solution by Google engineer: https://www.youtube.com/watch?v=VzW41m4USGs https://www.youtube.com/watch?v=VzW41m4USGs https://www.youtube.com/watch?v=VzW41m4USGs Intro: https://blog.bytebytego.com/p/rate-limiting-fundamentals Intro: https://blog.bytebytego.com/p/rate-limiting-fundamentals https://blog.bytebytego.com/p/rate-limiting-fundamentals https://blog.bytebytego.com/p/rate-limiting-fundamentals Good article on algorithms: https://medium.com/geekculture/system-design-design-a-rate-limiter-81d200c9d392 Good article on algorithms: https://medium.com/geekculture/system-design-design-a-rate-limiter-81d200c9d392 https://medium.com/geekculture/system-design-design-a-rate-limiter-81d200c9d392 https://medium.com/geekculture/system-design-design-a-rate-limiter-81d200c9d392 Leetcode discussion: https://leetcode.com/discuss/interview-question/system-design/1616482/System-Design%3A-Rate-Limiter Leetcode discussion: https://leetcode.com/discuss/interview-question/system-design/1616482/System-Design%3A-Rate-Limiter https://leetcode.com/discuss/interview-question/system-design/1616482/System-Design%3A-Rate-Limiter https://leetcode.com/discuss/interview-question/system-design/1616482/System-Design%3A-Rate-Limiter Question 6: System to Collect Performance Metrics from Thousands of Servers Company(s) asked: Google, Datadog, Amazon, eBay, LinkedIn Company(s) asked: Solution(s): Good solution: https://systemdesignschool.io/problems/realtime-monitoring-system/solution Nice article with overview: https://archive.is/Eezec Solution(s): Solution(s): Good solution: https://systemdesignschool.io/problems/realtime-monitoring-system/solution Good solution: https://systemdesignschool.io/problems/realtime-monitoring-system/solution https://systemdesignschool.io/problems/realtime-monitoring-system/solution https://systemdesignschool.io/problems/realtime-monitoring-system/solution Nice article with overview: https://archive.is/Eezec Nice article with overview: https://archive.is/Eezec https://archive.is/Eezec https://archive.is/Eezec Question 7: Design Google Calendar Company(s) asked: Google, LinkedIn Company(s) asked: Solution(s): Good High Level Solution: https://medium.com/%40astha2798/system-design-google-calendar-94894ddc9839 Solution from FAANG Engineer: https://www.youtube.com/watch?v=POfW0UULcyALeetcode Discussion: https://leetcode.com/discuss/post/305654/system-design-google-calendar-by-kthtes-ttur/Recurring Events: https://www.linkedin.com/pulse/tiny-system-design-google-calendar-like-app-recurring-rajesh-pillai/ Solution(s): Solution(s): Good High Level Solution: https://medium.com/%40astha2798/system-design-google-calendar-94894ddc9839 Good High Level Solution: https://medium.com/%40astha2798/system-design-google-calendar-94894ddc9839 https://medium.com/%40astha2798/system-design-google-calendar-94894ddc9839 https://medium.com/%40astha2798/system-design-google-calendar-94894ddc9839 Solution from FAANG Engineer: https://www.youtube.com/watch?v=POfW0UULcyA Solution from FAANG Engineer: https://www.youtube.com/watch?v=POfW0UULcyA https://www.youtube.com/watch?v=POfW0UULcyA https://www.youtube.com/watch?v=POfW0UULcyA Leetcode Discussion: https://leetcode.com/discuss/post/305654/system-design-google-calendar-by-kthtes-ttur/ Leetcode Discussion: https://leetcode.com/discuss/post/305654/system-design-google-calendar-by-kthtes-ttur/ https://leetcode.com/discuss/post/305654/system-design-google-calendar-by-kthtes-ttur/ https://leetcode.com/discuss/post/305654/system-design-google-calendar-by-kthtes-ttur/ Recurring Events: https://www.linkedin.com/pulse/tiny-system-design-google-calendar-like-app-recurring-rajesh-pillai/ Recurring Events: https://www.linkedin.com/pulse/tiny-system-design-google-calendar-like-app-recurring-rajesh-pillai/ https://www.linkedin.com/pulse/tiny-system-design-google-calendar-like-app-recurring-rajesh-pillai/ https://www.linkedin.com/pulse/tiny-system-design-google-calendar-like-app-recurring-rajesh-pillai/ Question 8: Design a Distributed Queue like RabbitMQ Company(s) asked: Amazon, Apple, Instacart Company(s) asked: Solution(s): Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/206134/Amazon-or-System-Design-or-Design-a-Distributed-Message-queue Good detailed explanation: https://docs.google.com/document/d/1pOarvQbjzLd9tz5ZuxktyrYsZ41mbWba5_LUeFj65lI/edit?tab=t.0#heading=h.iq7ofd902vlfMock Interview: https://www.tryexponent.com/blog/distributed-message-queue-system-design-mock-interviewDetailed explanation video: https://www.youtube.com/watch?v=iJLL-KPqBpM Solution(s): Solution(s): Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/206134/Amazon-or-System-Design-or-Design-a-Distributed-Message-queue Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/206134/Amazon-or-System-Design-or-Design-a-Distributed-Message-queue https://leetcode.com/discuss/interview-question/system-design/206134/Amazon-or-System-Design-or-Design-a-Distributed-Message-queue https://leetcode.com/discuss/interview-question/system-design/206134/Amazon-or-System-Design-or-Design-a-Distributed-Message-queue Good detailed explanation: https://docs.google.com/document/d/1pOarvQbjzLd9tz5ZuxktyrYsZ41mbWba5_LUeFj65lI/edit?tab=t.0#heading=h.iq7ofd902vlf Good detailed explanation: https://docs.google.com/document/d/1pOarvQbjzLd9tz5ZuxktyrYsZ41mbWba5_LUeFj65lI/edit?tab=t.0#heading=h.iq7ofd902vlf https://docs.google.com/document/d/1pOarvQbjzLd9tz5ZuxktyrYsZ41mbWba5_LUeFj65lI/edit?tab=t.0#heading=h.iq7ofd902vlf https://docs.google.com/document/d/1pOarvQbjzLd9tz5ZuxktyrYsZ41mbWba5_LUeFj65lI/edit?tab=t.0#heading=h.iq7ofd902vlf Mock Interview: https://www.tryexponent.com/blog/distributed-message-queue-system-design-mock-interview Mock Interview: https://www.tryexponent.com/blog/distributed-message-queue-system-design-mock-interview https://www.tryexponent.com/blog/distributed-message-queue-system-design-mock-interview https://www.tryexponent.com/blog/distributed-message-queue-system-design-mock-interview Detailed explanation video: https://www.youtube.com/watch?v=iJLL-KPqBpM Detailed explanation video: https://www.youtube.com/watch?v=iJLL-KPqBpM https://www.youtube.com/watch?v=iJLL-KPqBpM https://www.youtube.com/watch?v=iJLL-KPqBpM Question 9: Design Google Analytics — User Analytics Dashboard and Pipeline Company(s) asked: Microsoft, Facebook, Qualtrics, Google Company(s) asked: Solution(s): Leetcode: https://leetcode.com/discuss/interview-question/system-design/562404/system-designmicrosoft-real-time-analytics Facebook EM’s Mock Interview: https://www.youtube.com/watch?v=kIcq1_pBQSYDesigning a Dashboard with Data with FAANG Engineer: https://www.youtube.com/watch?v=8_5Gve7aNRk Solution(s): Solution(s): Leetcode: https://leetcode.com/discuss/interview-question/system-design/562404/system-designmicrosoft-real-time-analytics Leetcode: https://leetcode.com/discuss/interview-question/system-design/562404/system-designmicrosoft-real-time-analytics https://leetcode.com/discuss/interview-question/system-design/562404/system-designmicrosoft-real-time-analytics https://leetcode.com/discuss/interview-question/system-design/562404/system-designmicrosoft-real-time-analytics Facebook EM’s Mock Interview: https://www.youtube.com/watch?v=kIcq1_pBQSY Facebook EM’s Mock Interview: https://www.youtube.com/watch?v=kIcq1_pBQSY https://www.youtube.com/watch?v=kIcq1_pBQSY https://www.youtube.com/watch?v=kIcq1_pBQSY Designing a Dashboard with Data with FAANG Engineer: https://www.youtube.com/watch?v=8_5Gve7aNRk Designing a Dashboard with Data with FAANG Engineer: https://www.youtube.com/watch?v=8_5Gve7aNRk https://www.youtube.com/watch?v=8_5Gve7aNRk https://www.youtube.com/watch?v=8_5Gve7aNRk Question 10: Design a System for Sorting Large Data Sets Company(s) asked: Google, Microsoft Company(s) asked: Solution(s):Excellent solution:https://quanticdev.com/algorithms/distributed-computing/distributed-sorting/ From the same author, a very detailed video: https://www.youtube.com/watch?v=vgKjatRVtysLeetcode: https://leetcode.com/discuss/interview-question/4807845/Microsoft-Interview/ Solution(s):Excellent solution:https://quanticdev.com/algorithms/distributed-computing/distributed-sorting/ Solution(s):Excellent solution:https://quanticdev.com/algorithms/distributed-computing/distributed-sorting/ https://quanticdev.com/algorithms/distributed-computing/distributed-sorting/ https://quanticdev.com/algorithms/distributed-computing/distributed-sorting/ From the same author, a very detailed video: https://www.youtube.com/watch?v=vgKjatRVtys From the same author, a very detailed video: https://www.youtube.com/watch?v=vgKjatRVtys https://www.youtube.com/watch?v=vgKjatRVtys https://www.youtube.com/watch?v=vgKjatRVtys Leetcode: https://leetcode.com/discuss/interview-question/4807845/Microsoft-Interview/ Leetcode: https://leetcode.com/discuss/interview-question/4807845/Microsoft-Interview/ https://leetcode.com/discuss/interview-question/4807845/Microsoft-Interview/ https://leetcode.com/discuss/interview-question/4807845/Microsoft-Interview/ Question 11: Top K Elements: App Store Rankings, Amazon Bestsellers, etc. Company(s) asked: Amazon, Bloomberg, Facebook, Pinterest Company(s) asked: Solution(s):Solution from ex-Meta engineer:https://www.youtube.com/watch?v=1lfktgZ9Eeo Solution from FAANG Engineer: https://www.youtube.com/watch?v=RvZbdYvrFegVery detailed solution from Microsoft engineer: https://serhatgiydiren.com/system-design-interview-top-k-problem-heavy-hitters/Solution on Blind: https://www.teamblind.com/post/Please-critique-my-system-design-for-Top-K-most-searched-terms-Cfrqhnhk Solution(s):Solution from ex-Meta engineer:https://www.youtube.com/watch?v=1lfktgZ9Eeo Solution(s):Solution from ex-Meta engineer:https://www.youtube.com/watch?v=1lfktgZ9Eeo https://www.youtube.com/watch?v=1lfktgZ9Eeo https://www.youtube.com/watch?v=1lfktgZ9Eeo Solution from FAANG Engineer: https://www.youtube.com/watch?v=RvZbdYvrFeg Solution from FAANG Engineer: https://www.youtube.com/watch?v=RvZbdYvrFeg https://www.youtube.com/watch?v=RvZbdYvrFeg https://www.youtube.com/watch?v=RvZbdYvrFeg Very detailed solution from Microsoft engineer: https://serhatgiydiren.com/system-design-interview-top-k-problem-heavy-hitters/ Very detailed solution from Microsoft engineer: https://serhatgiydiren.com/system-design-interview-top-k-problem-heavy-hitters/ https://serhatgiydiren.com/system-design-interview-top-k-problem-heavy-hitters/ https://serhatgiydiren.com/system-design-interview-top-k-problem-heavy-hitters/ Solution on Blind: https://www.teamblind.com/post/Please-critique-my-system-design-for-Top-K-most-searched-terms-Cfrqhnhk Solution on Blind: https://www.teamblind.com/post/Please-critique-my-system-design-for-Top-K-most-searched-terms-Cfrqhnhk https://www.teamblind.com/post/Please-critique-my-system-design-for-Top-K-most-searched-terms-Cfrqhnhk https://www.teamblind.com/post/Please-critique-my-system-design-for-Top-K-most-searched-terms-Cfrqhnhk Question 12: Design Dropbox or Google Drive Company(s) asked: Dropbox, Facebook, Google, Amazon, Microsoft, OCI Company(s) asked: Solution(s):Paper: Google File System__https://static.googleusercontent.com/media/research.google.com/en//archive/gfs-sosp2003.pdf__ Solution from ex-Meta Engineer: https://www.youtube.com/watch?v=_UZ1ngy-kOIhttps://www.hellointerview.com/learn/system-design/problem-breakdowns/dropbox Mock Interview: https://www.tryexponent.com/courses/system-design-interviews/design-dropbox Solution(s):Paper: Google File System__https://static.googleusercontent.com/media/research.google.com/en//archive/gfs-sosp2003.pdf__ Solution(s):Paper: Google File System__https://static.googleusercontent.com/media/research.google.com/en//archive/gfs-sosp2003.pdf__ https://static.googleusercontent.com/media/research.google.com/en//archive/gfs-sosp2003.pdf Solution from ex-Meta Engineer: https://www.youtube.com/watch?v=_UZ1ngy-kOI Solution from ex-Meta Engineer: https://www.youtube.com/watch?v=_UZ1ngy-kOI https://www.youtube.com/watch?v=_UZ1ngy-kOI https://www.youtube.com/watch?v=_UZ1ngy-kOI https://www.hellointerview.com/learn/system-design/problem-breakdowns/dropbox https://www.hellointerview.com/learn/system-design/problem-breakdowns/dropbox https://www.hellointerview.com/learn/system-design/problem-breakdowns/dropbox https://www.hellointerview.com/learn/system-design/problem-breakdowns/dropbox Mock Interview: https://www.tryexponent.com/courses/system-design-interviews/design-dropbox Mock Interview: https://www.tryexponent.com/courses/system-design-interviews/design-dropbox https://www.tryexponent.com/courses/system-design-interviews/design-dropbox https://www.tryexponent.com/courses/system-design-interviews/design-dropbox Question 13: Design a Job Scheduler Company(s) asked: Google, Amazon, Microsoft, Doordash, Netflix, Atlassian Company(s) asked: Solution(s):Popular Leetcode Discussion:https://leetcode.com/discuss/general-discussion/1082786/System-Design%3A-Designing-a-distributed-Job-Scheduler-or-Many-interesting-concepts-to-learn Solution from Google Engineer: https://www.youtube.com/watch?v=pzDwYHRzEnkHigh Level Overview: https://blog.algomaster.io/p/design-a-distributed-job-schedulerMock Interview: https://interviewing.io/mocks/faang-system-design-job-scheduler Solution(s):Popular Leetcode Discussion:https://leetcode.com/discuss/general-discussion/1082786/System-Design%3A-Designing-a-distributed-Job-Scheduler-or-Many-interesting-concepts-to-learn Solution(s):Popular Leetcode Discussion:https://leetcode.com/discuss/general-discussion/1082786/System-Design%3A-Designing-a-distributed-Job-Scheduler-or-Many-interesting-concepts-to-learn https://leetcode.com/discuss/general-discussion/1082786/System-Design%3A-Designing-a-distributed-Job-Scheduler-or-Many-interesting-concepts-to-learn https://leetcode.com/discuss/general-discussion/1082786/System-Design%3A-Designing-a-distributed-Job-Scheduler-or-Many-interesting-concepts-to-learn Solution from Google Engineer: https://www.youtube.com/watch?v=pzDwYHRzEnk Solution from Google Engineer: https://www.youtube.com/watch?v=pzDwYHRzEnk https://www.youtube.com/watch?v=pzDwYHRzEnk https://www.youtube.com/watch?v=pzDwYHRzEnk High Level Overview: https://blog.algomaster.io/p/design-a-distributed-job-scheduler High Level Overview: https://blog.algomaster.io/p/design-a-distributed-job-scheduler https://blog.algomaster.io/p/design-a-distributed-job-scheduler https://blog.algomaster.io/p/design-a-distributed-job-scheduler Mock Interview: https://interviewing.io/mocks/faang-system-design-job-scheduler Mock Interview: https://interviewing.io/mocks/faang-system-design-job-scheduler https://interviewing.io/mocks/faang-system-design-job-scheduler https://interviewing.io/mocks/faang-system-design-job-scheduler Question 14: Design a Notification Service at Scale Company(s) asked: Google, Pinterest, OCI, Stubhub, Amazon, Airbnb, Instacart Company(s) asked: Solution(s):High level overview:https://blog.algomaster.io/p/design-a-scalable-notification-service Good design by Microsoft engineer: https://serhatgiydiren.com/system-design-interview-notification-service/Nice detailed solution video: https://www.youtube.com/watch?v=bBTPZ9NdSk8Solution by Google Engineer: https://www.youtube.com/watch?v=J-5JozlYIqI Solution(s):High level overview:https://blog.algomaster.io/p/design-a-scalable-notification-service Solution(s):High level overview:https://blog.algomaster.io/p/design-a-scalable-notification-service https://blog.algomaster.io/p/design-a-scalable-notification-service https://blog.algomaster.io/p/design-a-scalable-notification-service Good design by Microsoft engineer: https://serhatgiydiren.com/system-design-interview-notification-service/ Good design by Microsoft engineer: https://serhatgiydiren.com/system-design-interview-notification-service/ https://serhatgiydiren.com/system-design-interview-notification-service/ https://serhatgiydiren.com/system-design-interview-notification-service/ Nice detailed solution video: https://www.youtube.com/watch?v=bBTPZ9NdSk8 Nice detailed solution video: https://www.youtube.com/watch?v=bBTPZ9NdSk8 https://www.youtube.com/watch?v=bBTPZ9NdSk8 https://www.youtube.com/watch?v=bBTPZ9NdSk8 Solution by Google Engineer: https://www.youtube.com/watch?v=J-5JozlYIqI Solution by Google Engineer: https://www.youtube.com/watch?v=J-5JozlYIqI https://www.youtube.com/watch?v=J-5JozlYIqI https://www.youtube.com/watch?v=J-5JozlYIqI Question 15: Surge Pricing System: Uber — Stream Processing, etc. Company(s) asked: Uber, Lyft Company(s) asked: Solution(s):No solutions available online, but here is the best we could find: Good overview: https://docs.google.com/document/d/1uJpPuhO6vZK_VCxBYKbCJoQYrbFE9Ihrsfs919X8f40/edit?usp=sharingGPTed Solution I used: https://docs.google.com/document/d/1hfUmr8SpBMCkEMlOeXl6Y-H85PMzq-zd07Isb1ltWZE/edit?usp=sharing Solution(s):No solutions available online, but here is the best we could find: Solution(s):No solutions available online, but here is the best we could find: Good overview: https://docs.google.com/document/d/1uJpPuhO6vZK_VCxBYKbCJoQYrbFE9Ihrsfs919X8f40/edit?usp=sharing Good overview: https://docs.google.com/document/d/1uJpPuhO6vZK_VCxBYKbCJoQYrbFE9Ihrsfs919X8f40/edit?usp=sharing https://docs.google.com/document/d/1uJpPuhO6vZK_VCxBYKbCJoQYrbFE9Ihrsfs919X8f40/edit?usp=sharing https://docs.google.com/document/d/1uJpPuhO6vZK_VCxBYKbCJoQYrbFE9Ihrsfs919X8f40/edit?usp=sharing GPTed Solution I used: https://docs.google.com/document/d/1hfUmr8SpBMCkEMlOeXl6Y-H85PMzq-zd07Isb1ltWZE/edit?usp=sharing GPTed Solution I used: https://docs.google.com/document/d/1hfUmr8SpBMCkEMlOeXl6Y-H85PMzq-zd07Isb1ltWZE/edit?usp=sharing https://docs.google.com/document/d/1hfUmr8SpBMCkEMlOeXl6Y-H85PMzq-zd07Isb1ltWZE/edit?usp=sharing https://docs.google.com/document/d/1hfUmr8SpBMCkEMlOeXl6Y-H85PMzq-zd07Isb1ltWZE/edit?usp=sharing Question 16: Netflix: Limit the Number of Screens Each User Can Watch Company(s) asked: Some FAANG Company(s) asked: Solution(s):No solutions available online, but here is the best we could find: On Mobile and TVs, Because you are running the app, you have access to certain device identifiers. For example, on iOS, you can get the phone model, and advertising identifier for a device. You can use this data to record a device on a backend cache.On web, you can use the IP address and create a browser session. You can use that as a key to a table maintaining sessions for a user.With a combination of the above, you can identify how many users are watching from an account at any given time. Solution(s):No solutions available online, but here is the best we could find: Solution(s):No solutions available online, but here is the best we could find: On Mobile and TVs, Because you are running the app, you have access to certain device identifiers. For example, on iOS, you can get the phone model, and advertising identifier for a device. You can use this data to record a device on a backend cache. On Mobile and TVs, Because you are running the app, you have access to certain device identifiers. For example, on iOS, you can get the phone model, and advertising identifier for a device. You can use this data to record a device on a backend cache. On web, you can use the IP address and create a browser session. You can use that as a key to a table maintaining sessions for a user. On web, you can use the IP address and create a browser session. You can use that as a key to a table maintaining sessions for a user. With a combination of the above, you can identify how many users are watching from an account at any given time. With a combination of the above, you can identify how many users are watching from an account at any given time. Question 17: Design an ETA Service and Location Sharing Between Driver and Rider Company(s) asked: Uber, Some FAANG Company(s) asked: Solution(s):No solutions available online, but here are some reads:Note: This is after matching a driver with a rider — Question 30. Part 1 — ETA:ETA for Uber Eats, related: https://mecha-mind.medium.com/ml-system-design-eta-prediction-9dc8000fd86bHigh level approach:https://www.finalroundai.com/interview-questions/google-maps-eta-compute Part 2 - Live location sharing:Links that are ok, but don’t do justice for interviews: https://www.linkedin.com/pulse/building-live-location-tracking-app-best-practices-real-time-das-cuujc/ https://github.com/praveenkumardec89/location-tracking-system-design Solution(s):No solutions available online, but here are some reads:Note: This is after matching a driver with a rider — Question 30. Solution(s):No solutions available online, but here are some reads:Note: This is after matching a driver with a rider — Question 30. Part 1 — ETA: Part 1 — ETA: ETA for Uber Eats, related: https://mecha-mind.medium.com/ml-system-design-eta-prediction-9dc8000fd86bHigh level approach:https://www.finalroundai.com/interview-questions/google-maps-eta-compute ETA for Uber Eats, related: https://mecha-mind.medium.com/ml-system-design-eta-prediction-9dc8000fd86bHigh level approach:https://www.finalroundai.com/interview-questions/google-maps-eta-compute https://mecha-mind.medium.com/ml-system-design-eta-prediction-9dc8000fd86b https://mecha-mind.medium.com/ml-system-design-eta-prediction-9dc8000fd86b https://www.finalroundai.com/interview-questions/google-maps-eta-compute https://www.finalroundai.com/interview-questions/google-maps-eta-compute Part 2 - Live location sharing: Part 2 - Live location sharing: Links that are ok, but don’t do justice for interviews: Links that are ok, but don’t do justice for interviews: https://www.linkedin.com/pulse/building-live-location-tracking-app-best-practices-real-time-das-cuujc/ https://www.linkedin.com/pulse/building-live-location-tracking-app-best-practices-real-time-das-cuujc/ https://www.linkedin.com/pulse/building-live-location-tracking-app-best-practices-real-time-das-cuujc/ https://www.linkedin.com/pulse/building-live-location-tracking-app-best-practices-real-time-das-cuujc/ https://github.com/praveenkumardec89/location-tracking-system-design https://github.com/praveenkumardec89/location-tracking-system-design https://github.com/praveenkumardec89/location-tracking-system-design https://github.com/praveenkumardec89/location-tracking-system-design Question 18: Design a Hotel Booking System: Room Availability, Reservation, Booking Company(s) asked: Amazon, Square, Booking.com Company(s) asked: Solution(s):Solution from FAANG Engineer:https://www.youtube.com/watch?v=Ale7Fn921GQ Good API and High Level Design: https://javascript.plainenglish.io/how-to-design-a-hotel-booking-system-56ef18b6adfcHigh Level Backend Design Video: https://www.youtube.com/watch?v=m67Mjbx6DMYMock Interview: https://www.tryexponent.com/blog/design-a-hotel-booking-service-system-design-interview-question-answer Solution(s):Solution from FAANG Engineer:https://www.youtube.com/watch?v=Ale7Fn921GQ Solution(s):Solution from FAANG Engineer:https://www.youtube.com/watch?v=Ale7Fn921GQ https://www.youtube.com/watch?v=Ale7Fn921GQ https://www.youtube.com/watch?v=Ale7Fn921GQ Good API and High Level Design: https://javascript.plainenglish.io/how-to-design-a-hotel-booking-system-56ef18b6adfc Good API and High Level Design: https://javascript.plainenglish.io/how-to-design-a-hotel-booking-system-56ef18b6adfc https://javascript.plainenglish.io/how-to-design-a-hotel-booking-system-56ef18b6adfc https://javascript.plainenglish.io/how-to-design-a-hotel-booking-system-56ef18b6adfc High Level Backend Design Video: https://www.youtube.com/watch?v=m67Mjbx6DMY High Level Backend Design Video: https://www.youtube.com/watch?v=m67Mjbx6DMY https://www.youtube.com/watch?v=m67Mjbx6DMY https://www.youtube.com/watch?v=m67Mjbx6DMY Mock Interview: https://www.tryexponent.com/blog/design-a-hotel-booking-service-system-design-interview-question-answer Mock Interview: https://www.tryexponent.com/blog/design-a-hotel-booking-service-system-design-interview-question-answer https://www.tryexponent.com/blog/design-a-hotel-booking-service-system-design-interview-question-answer https://www.tryexponent.com/blog/design-a-hotel-booking-service-system-design-interview-question-answer Question 19: Design an A/B Testing System (like Optimizely) Company(s) asked: Affirm, Some FAANG Company(s) asked: Solution(s):No good solutions for this online. Here are a few reads: Good design: https://chuan-zhang.medium.com/building-a-trustworthy-a-b-testing-platform-practical-guide-and-an-architecture-demonstration-332446724ba0High level overview: https://xhinliang.medium.com/how-to-design-an-a-b-test-system-1450b06933fBuilding a small homemade A/B test engine: https://medium.com/studocu-techblog/recipe-for-implementing-a-homemade-a-b-testing-engine-2e95c97c8020 Solution(s):No good solutions for this online. Here are a few reads: Solution(s):No good solutions for this online. Here are a few reads: Good design: https://chuan-zhang.medium.com/building-a-trustworthy-a-b-testing-platform-practical-guide-and-an-architecture-demonstration-332446724ba0 Good design: https://chuan-zhang.medium.com/building-a-trustworthy-a-b-testing-platform-practical-guide-and-an-architecture-demonstration-332446724ba0 https://chuan-zhang.medium.com/building-a-trustworthy-a-b-testing-platform-practical-guide-and-an-architecture-demonstration-332446724ba0 https://chuan-zhang.medium.com/building-a-trustworthy-a-b-testing-platform-practical-guide-and-an-architecture-demonstration-332446724ba0 High level overview: https://xhinliang.medium.com/how-to-design-an-a-b-test-system-1450b06933f High level overview: https://xhinliang.medium.com/how-to-design-an-a-b-test-system-1450b06933f https://xhinliang.medium.com/how-to-design-an-a-b-test-system-1450b06933f https://xhinliang.medium.com/how-to-design-an-a-b-test-system-1450b06933f Building a small homemade A/B test engine: https://medium.com/studocu-techblog/recipe-for-implementing-a-homemade-a-b-testing-engine-2e95c97c8020 Building a small homemade A/B test engine: https://medium.com/studocu-techblog/recipe-for-implementing-a-homemade-a-b-testing-engine-2e95c97c8020 https://medium.com/studocu-techblog/recipe-for-implementing-a-homemade-a-b-testing-engine-2e95c97c8020 https://medium.com/studocu-techblog/recipe-for-implementing-a-homemade-a-b-testing-engine-2e95c97c8020 Question 20: Design a Price Alert System for Amazon (or for Stock prices) Company(s) asked: Facebook, Bloomberg, Coinbase, Swyftx, Trade Republic Company(s) asked: Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/5745135/Design-Stock-price-Notification-System Good solutions: https://dilipkumar.medium.com/price-drop-tracker-system-design-d2f9ed36a935Another solution: https://www.tryexponent.com/questions/3371/design-amazon-price-tracker Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/5745135/Design-Stock-price-Notification-System Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/5745135/Design-Stock-price-Notification-System https://leetcode.com/discuss/interview-question/system-design/5745135/Design-Stock-price-Notification-System https://leetcode.com/discuss/interview-question/system-design/5745135/Design-Stock-price-Notification-System Good solutions: https://dilipkumar.medium.com/price-drop-tracker-system-design-d2f9ed36a935 Good solutions: https://dilipkumar.medium.com/price-drop-tracker-system-design-d2f9ed36a935 https://dilipkumar.medium.com/price-drop-tracker-system-design-d2f9ed36a935 https://dilipkumar.medium.com/price-drop-tracker-system-design-d2f9ed36a935 Another solution: https://www.tryexponent.com/questions/3371/design-amazon-price-tracker Another solution: https://www.tryexponent.com/questions/3371/design-amazon-price-tracker https://www.tryexponent.com/questions/3371/design-amazon-price-tracker https://www.tryexponent.com/questions/3371/design-amazon-price-tracker Question 21: Design an IoC/Dependency Injection Framework Company(s) asked: ADP, Some FAANG Company(s) asked: Solution(s):No good solution available online, here is the best we could find: Intro to concepts: https://tarunjain07.medium.com/inversion-of-control-ioc-dependency-injection-di-9155a4151db9More info: https://www.finalroundai.com/blog/dependency-injection-interview-questionsVideo: https://www.youtube.com/watch?v=ryI8CA7Dbx8 Solution(s):No good solution available online, here is the best we could find: Solution(s):No good solution available online, here is the best we could find: Intro to concepts: https://tarunjain07.medium.com/inversion-of-control-ioc-dependency-injection-di-9155a4151db9 Intro to concepts: https://tarunjain07.medium.com/inversion-of-control-ioc-dependency-injection-di-9155a4151db9 https://tarunjain07.medium.com/inversion-of-control-ioc-dependency-injection-di-9155a4151db9 https://tarunjain07.medium.com/inversion-of-control-ioc-dependency-injection-di-9155a4151db9 More info: https://www.finalroundai.com/blog/dependency-injection-interview-questions More info: https://www.finalroundai.com/blog/dependency-injection-interview-questions https://www.finalroundai.com/blog/dependency-injection-interview-questions https://www.finalroundai.com/blog/dependency-injection-interview-questions Video: https://www.youtube.com/watch?v=ryI8CA7Dbx8 Video: https://www.youtube.com/watch?v=ryI8CA7Dbx8 https://www.youtube.com/watch?v=ryI8CA7Dbx8 https://www.youtube.com/watch?v=ryI8CA7Dbx8 Question 22: Design a Credit Card Processing System Company(s) asked: Stripe, Paytm, Paypal, Databricks, Capital One Company(s) asked: Solution(s):Detailed solution:https://newsletter.pragmaticengineer.com/p/designing-a-payment-system Simpler solution: https://hackernoon.com/system-design-interview-designing-payment-systems-follow-up-questions-and-probable-issuesGood video explanation: https://www.youtube.com/watch?v=olfaBgJrUBI Solution(s):Detailed solution:https://newsletter.pragmaticengineer.com/p/designing-a-payment-system Solution(s):Detailed solution:https://newsletter.pragmaticengineer.com/p/designing-a-payment-system https://newsletter.pragmaticengineer.com/p/designing-a-payment-system https://newsletter.pragmaticengineer.com/p/designing-a-payment-system Simpler solution: https://hackernoon.com/system-design-interview-designing-payment-systems-follow-up-questions-and-probable-issues Simpler solution: https://hackernoon.com/system-design-interview-designing-payment-systems-follow-up-questions-and-probable-issues https://hackernoon.com/system-design-interview-designing-payment-systems-follow-up-questions-and-probable-issues https://hackernoon.com/system-design-interview-designing-payment-systems-follow-up-questions-and-probable-issues Good video explanation: https://www.youtube.com/watch?v=olfaBgJrUBI Good video explanation: https://www.youtube.com/watch?v=olfaBgJrUBI https://www.youtube.com/watch?v=olfaBgJrUBI https://www.youtube.com/watch?v=olfaBgJrUBI Question 23: Count Facebook Likes, Especially for High-Profile Users Company(s) asked: Facebook, Amazon, Twitter Company(s) asked: Solution(s):Discussion on Blind:https://www.teamblind.com/post/System-Design-Question-How-does-FBInsta-storeretrieve-likes-NZEcwqVp Detailed Solution: https://systemdesign.one/distributed-counter-system-design/Video Solution: https://blog.interviewcamp.io/live-design-facebook-likes-distributed-counter Solution(s):Discussion on Blind:https://www.teamblind.com/post/System-Design-Question-How-does-FBInsta-storeretrieve-likes-NZEcwqVp Solution(s):Discussion on Blind:https://www.teamblind.com/post/System-Design-Question-How-does-FBInsta-storeretrieve-likes-NZEcwqVp https://www.teamblind.com/post/System-Design-Question-How-does-FBInsta-storeretrieve-likes-NZEcwqVp https://www.teamblind.com/post/System-Design-Question-How-does-FBInsta-storeretrieve-likes-NZEcwqVp Detailed Solution: https://systemdesign.one/distributed-counter-system-design/ Detailed Solution: https://systemdesign.one/distributed-counter-system-design/ https://systemdesign.one/distributed-counter-system-design/ https://systemdesign.one/distributed-counter-system-design/ Video Solution: https://blog.interviewcamp.io/live-design-facebook-likes-distributed-counter Video Solution: https://blog.interviewcamp.io/live-design-facebook-likes-distributed-counter https://blog.interviewcamp.io/live-design-facebook-likes-distributed-counter https://blog.interviewcamp.io/live-design-facebook-likes-distributed-counter Question 24: Design a Control Plane for a Distributed Database Company(s) asked: Netflix Company(s) asked: Solution(s):No solution online. Here are a few reads: Good to know what a control plane is. This video does a great job: https://www.youtube.com/watch?v=Ep1QW-wOmgcDynamoDB Paper: https://www.allthingsdistributed.com/files/amazon-dynamo-sosp2007.pdf Solution(s):No solution online. Here are a few reads: Solution(s):No solution online. Here are a few reads: Good to know what a control plane is. This video does a great job: https://www.youtube.com/watch?v=Ep1QW-wOmgc Good to know what a control plane is. This video does a great job: https://www.youtube.com/watch?v=Ep1QW-wOmgc https://www.youtube.com/watch?v=Ep1QW-wOmgc https://www.youtube.com/watch?v=Ep1QW-wOmgc DynamoDB Paper: https://www.allthingsdistributed.com/files/amazon-dynamo-sosp2007.pdf DynamoDB Paper: https://www.allthingsdistributed.com/files/amazon-dynamo-sosp2007.pdf https://www.allthingsdistributed.com/files/amazon-dynamo-sosp2007.pdf https://www.allthingsdistributed.com/files/amazon-dynamo-sosp2007.pdf Question 25: Design a User Login and Authentication System for a Website Company(s) asked: Google, Visa, Gusto Company(s) asked: Solution(s):Great explanation:https://www.youtube.com/watch?v=uj_4vxm9u90 Good solution: https://hackernoon.com/designing-functional-authentication-and-authorization-systemsGood summary: https://www.finalroundai.com/interview-questions/google-design-login-endpointExplanation videos:https://www.youtube.com/watch?v=fyTxwIa-1U0https://www.youtube.com/watch?v=zt8Cocdy15c Solution(s):Great explanation:https://www.youtube.com/watch?v=uj_4vxm9u90 Solution(s):Great explanation:https://www.youtube.com/watch?v=uj_4vxm9u90 https://www.youtube.com/watch?v=uj_4vxm9u90 https://www.youtube.com/watch?v=uj_4vxm9u90 Good solution: https://hackernoon.com/designing-functional-authentication-and-authorization-systems Good solution: https://hackernoon.com/designing-functional-authentication-and-authorization-systems https://hackernoon.com/designing-functional-authentication-and-authorization-systems https://hackernoon.com/designing-functional-authentication-and-authorization-systems Good summary: https://www.finalroundai.com/interview-questions/google-design-login-endpoint Good summary: https://www.finalroundai.com/interview-questions/google-design-login-endpoint https://www.finalroundai.com/interview-questions/google-design-login-endpoint https://www.finalroundai.com/interview-questions/google-design-login-endpoint Explanation videos:https://www.youtube.com/watch?v=fyTxwIa-1U0https://www.youtube.com/watch?v=zt8Cocdy15c Explanation videos:https://www.youtube.com/watch?v=fyTxwIa-1U0https://www.youtube.com/watch?v=zt8Cocdy15c https://www.youtube.com/watch?v=fyTxwIa-1U0 https://www.youtube.com/watch?v=fyTxwIa-1U0 https://www.youtube.com/watch?v=zt8Cocdy15c https://www.youtube.com/watch?v=zt8Cocdy15c Question 26: Develop a Weather Application Company(s) asked: Amazon, Chime, Facebook, Hubspot, Uber, Klaviyo Company(s) asked: Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/1286344/system-design-design-weather-widget Video explanation with sensors: https://www.youtube.com/watch?v=sWNRuClDOo4&t=2sAnother explanation with sensors: https://www.youtube.com/watch?v=PxL8W3WoK5k Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/1286344/system-design-design-weather-widget Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/1286344/system-design-design-weather-widget https://leetcode.com/discuss/interview-question/system-design/1286344/system-design-design-weather-widget https://leetcode.com/discuss/interview-question/system-design/1286344/system-design-design-weather-widget Video explanation with sensors: https://www.youtube.com/watch?v=sWNRuClDOo4&t=2s Video explanation with sensors: https://www.youtube.com/watch?v=sWNRuClDOo4&t=2s https://www.youtube.com/watch?v=sWNRuClDOo4&t=2s https://www.youtube.com/watch?v=sWNRuClDOo4&t=2s Another explanation with sensors: https://www.youtube.com/watch?v=PxL8W3WoK5k Another explanation with sensors: https://www.youtube.com/watch?v=PxL8W3WoK5k https://www.youtube.com/watch?v=PxL8W3WoK5k https://www.youtube.com/watch?v=PxL8W3WoK5k Question 27: Create a Document Management System like Wikipedia, Notion or Google Docs Company(s) asked: Google, Flipkart, Notion, Amazon Company(s) asked: Solution(s):No good solutions available online. However, here are some reads: Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/322448/Content-Management-System-DesignSolution from Google Engineer. This goes over live editing too, but this specific question is not about live editing: https://www.youtube.com/watch?v=YCjVIDv0zQYDetailed Frontend Design: https://www.youtube.com/watch?v=tsGarhpWOws Solution(s):No good solutions available online. However, here are some reads: Solution(s):No good solutions available online. However, here are some reads: Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/322448/Content-Management-System-Design Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/322448/Content-Management-System-Design https://leetcode.com/discuss/interview-question/system-design/322448/Content-Management-System-Design https://leetcode.com/discuss/interview-question/system-design/322448/Content-Management-System-Design Solution from Google Engineer. This goes over live editing too, but this specific question is not about live editing: https://www.youtube.com/watch?v=YCjVIDv0zQY Solution from Google Engineer. This goes over live editing too, but this specific question is not about live editing: https://www.youtube.com/watch?v=YCjVIDv0zQY https://www.youtube.com/watch?v=YCjVIDv0zQY https://www.youtube.com/watch?v=YCjVIDv0zQY Detailed Frontend Design: https://www.youtube.com/watch?v=tsGarhpWOws Detailed Frontend Design: https://www.youtube.com/watch?v=tsGarhpWOws https://www.youtube.com/watch?v=tsGarhpWOws https://www.youtube.com/watch?v=tsGarhpWOws Question 28: Build a Marketplace Feature for Facebook Company(s) asked: Facebook, Roblox Company(s) asked: Solution(s):While no solution exists online specifically for FB Marketplace, here are solutions for building marketplaces which will help: Cheat Sheet: https://www.reddit.com/r/leetcode/comments/104wf74/system_design_cheatsheet_online_marketplace/Craigslist Design: https://medium.com/%40bugfreeai/system-design-interview-practice-design-craigslist-c95ba0238f74Mock Interview: https://www.youtube.com/watch?v=2N0TXrgB9AYFor location based listings, refer to geospatial search — Question 30 Solution(s):While no solution exists online specifically for FB Marketplace, here are solutions for building marketplaces which will help: Solution(s):While no solution exists online specifically for FB Marketplace, here are solutions for building marketplaces which will help: Cheat Sheet: https://www.reddit.com/r/leetcode/comments/104wf74/system_design_cheatsheet_online_marketplace/ Cheat Sheet: https://www.reddit.com/r/leetcode/comments/104wf74/system_design_cheatsheet_online_marketplace/ https://www.reddit.com/r/leetcode/comments/104wf74/system_design_cheatsheet_online_marketplace/ https://www.reddit.com/r/leetcode/comments/104wf74/system_design_cheatsheet_online_marketplace/ Craigslist Design: https://medium.com/%40bugfreeai/system-design-interview-practice-design-craigslist-c95ba0238f74 Craigslist Design: https://medium.com/%40bugfreeai/system-design-interview-practice-design-craigslist-c95ba0238f74 https://medium.com/%40bugfreeai/system-design-interview-practice-design-craigslist-c95ba0238f74 https://medium.com/%40bugfreeai/system-design-interview-practice-design-craigslist-c95ba0238f74 Mock Interview: https://www.youtube.com/watch?v=2N0TXrgB9AY Mock Interview: https://www.youtube.com/watch?v=2N0TXrgB9AY https://www.youtube.com/watch?v=2N0TXrgB9AY https://www.youtube.com/watch?v=2N0TXrgB9AY For location based listings, refer to geospatial search — Question 30 For location based listings, refer to geospatial search — Question 30 For location based listings, refer to geospatial search — Question 30 Question 29: Design a System to Monitor the Health of a Cluster Company(s) asked: Uber, Lacework, Amazon, Google Company(s) asked: Solution(s):Good starting point: Interview experience:https://medium.com/%40ajingnv/system-design-a-server-health-monitoring-system-9bdd0066bb9c Solution: https://systemdesignschool.io/problems/realtime-monitoring-system/solutionLeetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/958919/System-Design-Interview-or-Service-Health-Monitoring-and-Alerting-Service Solution(s):Good starting point: Interview experience:https://medium.com/%40ajingnv/system-design-a-server-health-monitoring-system-9bdd0066bb9c Solution(s):Good starting point: Interview experience:https://medium.com/%40ajingnv/system-design-a-server-health-monitoring-system-9bdd0066bb9c https://medium.com/%40ajingnv/system-design-a-server-health-monitoring-system-9bdd0066bb9c https://medium.com/%40ajingnv/system-design-a-server-health-monitoring-system-9bdd0066bb9c Solution: https://systemdesignschool.io/problems/realtime-monitoring-system/solution Solution: https://systemdesignschool.io/problems/realtime-monitoring-system/solution https://systemdesignschool.io/problems/realtime-monitoring-system/solution https://systemdesignschool.io/problems/realtime-monitoring-system/solution Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/958919/System-Design-Interview-or-Service-Health-Monitoring-and-Alerting-Service Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/958919/System-Design-Interview-or-Service-Health-Monitoring-and-Alerting-Service https://leetcode.com/discuss/interview-question/system-design/958919/System-Design-Interview-or-Service-Health-Monitoring-and-Alerting-Service https://leetcode.com/discuss/interview-question/system-design/958919/System-Design-Interview-or-Service-Health-Monitoring-and-Alerting-Service Question 30: Find a Rider for Uber or Uber Eats Company(s) asked: Facebook, Uber, Google, Microsoft Company(s) asked: Solution(s): Very similar to Proximity Service (Find Nearby Friends, Design Yelp). This problem is about maintaining a large geospatial index. Excellent article on geospatial algorithms: https://blog.mapbox.com/a-dive-into-spatial-search-algorithms-ebd0c5e39d2aGood solution for Yelp, which applies here: https://systemdesignschool.io/problems/yelp/solutionPopular Video: https://www.youtube.com/watch?v=M4lR_Va97cQMock Interview: https://www.youtube.com/watch?v=atywHEArk1w Solution(s): Solution(s): Very similar to Proximity Service (Find Nearby Friends, Design Yelp). This problem is about maintaining a large geospatial index. Very similar to Proximity Service (Find Nearby Friends, Design Yelp). This problem is about maintaining a large geospatial index. Excellent article on geospatial algorithms: https://blog.mapbox.com/a-dive-into-spatial-search-algorithms-ebd0c5e39d2a Excellent article on geospatial algorithms: https://blog.mapbox.com/a-dive-into-spatial-search-algorithms-ebd0c5e39d2a https://blog.mapbox.com/a-dive-into-spatial-search-algorithms-ebd0c5e39d2a https://blog.mapbox.com/a-dive-into-spatial-search-algorithms-ebd0c5e39d2a Good solution for Yelp, which applies here: https://systemdesignschool.io/problems/yelp/solution Good solution for Yelp, which applies here: https://systemdesignschool.io/problems/yelp/solution https://systemdesignschool.io/problems/yelp/solution https://systemdesignschool.io/problems/yelp/solution Popular Video: https://www.youtube.com/watch?v=M4lR_Va97cQ Popular Video: https://www.youtube.com/watch?v=M4lR_Va97cQ https://www.youtube.com/watch?v=M4lR_Va97cQ https://www.youtube.com/watch?v=M4lR_Va97cQ Mock Interview: https://www.youtube.com/watch?v=atywHEArk1w Mock Interview: https://www.youtube.com/watch?v=atywHEArk1w https://www.youtube.com/watch?v=atywHEArk1w https://www.youtube.com/watch?v=atywHEArk1w Question 31: Design a Distributed Tracing System Company(s) asked: Uber, Amazon Company(s) asked: Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/313117/Design-a-system-capable-of-tracking-bad-request-down-quickly Great intro to Tracing: https://betterstack.com/community/guides/observability/distributed-tracing/Dapper research paper: https://research.google/pubs/pub36356/Solution from FAANG engineer: https://www.youtube.com/watch?v=Jkhw_FSikX0 Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/313117/Design-a-system-capable-of-tracking-bad-request-down-quickly Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/313117/Design-a-system-capable-of-tracking-bad-request-down-quickly https://leetcode.com/discuss/interview-question/system-design/313117/Design-a-system-capable-of-tracking-bad-request-down-quickly https://leetcode.com/discuss/interview-question/system-design/313117/Design-a-system-capable-of-tracking-bad-request-down-quickly Great intro to Tracing: https://betterstack.com/community/guides/observability/distributed-tracing/ Great intro to Tracing: https://betterstack.com/community/guides/observability/distributed-tracing/ https://betterstack.com/community/guides/observability/distributed-tracing/ https://betterstack.com/community/guides/observability/distributed-tracing/ Dapper research paper: https://research.google/pubs/pub36356/ Dapper research paper: https://research.google/pubs/pub36356/ https://research.google/pubs/pub36356/ https://research.google/pubs/pub36356/ Solution from FAANG engineer: https://www.youtube.com/watch?v=Jkhw_FSikX0 Solution from FAANG engineer: https://www.youtube.com/watch?v=Jkhw_FSikX0 https://www.youtube.com/watch?v=Jkhw_FSikX0 https://www.youtube.com/watch?v=Jkhw_FSikX0 Question 32: Design Backend for an App to Distribute 6 Million Free Burgers in One Hour Company(s) asked: Google, Deliveroo Company(s) asked: Solution(s):No solution online, but here are some resources: Mock Interview: https://interviewing.io/mocks/google-system-design-design-a-free-food-appAnother Mock Interview: https://interviewing.io/questions/design-a-free-food-app Reddit discussion: https://www.reddit.com/r/softwarearchitecture/comments/xlztzr/interview_systems_design_question_that_i_want/ Solution(s):No solution online, but here are some resources: Solution(s):No solution online, but here are some resources: Mock Interview: https://interviewing.io/mocks/google-system-design-design-a-free-food-app Mock Interview: https://interviewing.io/mocks/google-system-design-design-a-free-food-app https://interviewing.io/mocks/google-system-design-design-a-free-food-app https://interviewing.io/mocks/google-system-design-design-a-free-food-app Another Mock Interview: https://interviewing.io/questions/design-a-free-food-app Another Mock Interview: https://interviewing.io/questions/design-a-free-food-app https://interviewing.io/questions/design-a-free-food-app https://interviewing.io/questions/design-a-free-food-app Reddit discussion: https://www.reddit.com/r/softwarearchitecture/comments/xlztzr/interview_systems_design_question_that_i_want/ Reddit discussion: https://www.reddit.com/r/softwarearchitecture/comments/xlztzr/interview_systems_design_question_that_i_want/ https://www.reddit.com/r/softwarearchitecture/comments/xlztzr/interview_systems_design_question_that_i_want/ https://www.reddit.com/r/softwarearchitecture/comments/xlztzr/interview_systems_design_question_that_i_want/ Question 33: Design a File Downloader Library Company(s) asked: Facebook Company(s) asked: Solution(s):No good solutions online, but here are a few resources: Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/1587255/Facebook-System-DesignVideo Solution: https://www.youtube.com/watch?v=u520bdagKkU Solution(s):No good solutions online, but here are a few resources: Solution(s):No good solutions online, but here are a few resources: Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/1587255/Facebook-System-Design Leetcode Discussion: https://leetcode.com/discuss/interview-question/system-design/1587255/Facebook-System-Design https://leetcode.com/discuss/interview-question/system-design/1587255/Facebook-System-Design https://leetcode.com/discuss/interview-question/system-design/1587255/Facebook-System-Design Video Solution: https://www.youtube.com/watch?v=u520bdagKkU Video Solution: https://www.youtube.com/watch?v=u520bdagKkU https://www.youtube.com/watch?v=u520bdagKkU https://www.youtube.com/watch?v=u520bdagKkU Question 34: Design a System to View Latest Stock Prices Worldwide Company(s) asked: Google, Bloomberg, Amazon Company(s) asked: Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/431712/Bloomberg-or-Design-a-system-to-give-prices-of-a-stock Detailed solution: https://harshsavasil.medium.com/design-real-time-stock-price-feed-9e1fba0a1c4eReal case study: https://www.paytmmoney.com/blog/how-we-built-an-in-house-price-alerts-system/ Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/431712/Bloomberg-or-Design-a-system-to-give-prices-of-a-stock Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/system-design/431712/Bloomberg-or-Design-a-system-to-give-prices-of-a-stock https://leetcode.com/discuss/interview-question/system-design/431712/Bloomberg-or-Design-a-system-to-give-prices-of-a-stock https://leetcode.com/discuss/interview-question/system-design/431712/Bloomberg-or-Design-a-system-to-give-prices-of-a-stock Detailed solution: https://harshsavasil.medium.com/design-real-time-stock-price-feed-9e1fba0a1c4e Detailed solution: https://harshsavasil.medium.com/design-real-time-stock-price-feed-9e1fba0a1c4e https://harshsavasil.medium.com/design-real-time-stock-price-feed-9e1fba0a1c4e https://harshsavasil.medium.com/design-real-time-stock-price-feed-9e1fba0a1c4e Real case study: https://www.paytmmoney.com/blog/how-we-built-an-in-house-price-alerts-system/ Real case study: https://www.paytmmoney.com/blog/how-we-built-an-in-house-price-alerts-system/ https://www.paytmmoney.com/blog/how-we-built-an-in-house-price-alerts-system/ https://www.paytmmoney.com/blog/how-we-built-an-in-house-price-alerts-system/ Question 35: Develop a Photo Sharing Platform like Flickr or Google Photos Company(s) asked: Google, Doordash, Amazon, Uber, Facebook Company(s) asked: Solution(s):Must read: Facebook’s Photo Storage Paper:https://www.usenix.org/legacy/event/osdi10/tech/full_papers/Beaver.pdf High level approach: https://medium.com/%40bugfreeai/key-points-of-a-common-system-design-interview-question-photo-sharing-platform-91f52fa4bf05Solution: https://www.geeksforgeeks.org/design-a-picture-sharing-system-system-design/Frontend Solution Video: https://www.youtube.com/watch?v=FUKGooQXih8Mock Interview: https://interviewing.io/mocks/faang-system-design-photo-sharing-service Solution(s):Must read: Facebook’s Photo Storage Paper:https://www.usenix.org/legacy/event/osdi10/tech/full_papers/Beaver.pdf Solution(s):Must read: Facebook’s Photo Storage Paper:https://www.usenix.org/legacy/event/osdi10/tech/full_papers/Beaver.pdf https://www.usenix.org/legacy/event/osdi10/tech/full_papers/Beaver.pdf https://www.usenix.org/legacy/event/osdi10/tech/full_papers/Beaver.pdf High level approach: https://medium.com/%40bugfreeai/key-points-of-a-common-system-design-interview-question-photo-sharing-platform-91f52fa4bf05 High level approach: https://medium.com/%40bugfreeai/key-points-of-a-common-system-design-interview-question-photo-sharing-platform-91f52fa4bf05 https://medium.com/%40bugfreeai/key-points-of-a-common-system-design-interview-question-photo-sharing-platform-91f52fa4bf05 https://medium.com/%40bugfreeai/key-points-of-a-common-system-design-interview-question-photo-sharing-platform-91f52fa4bf05 Solution: https://www.geeksforgeeks.org/design-a-picture-sharing-system-system-design/ Solution: https://www.geeksforgeeks.org/design-a-picture-sharing-system-system-design/ https://www.geeksforgeeks.org/design-a-picture-sharing-system-system-design/ https://www.geeksforgeeks.org/design-a-picture-sharing-system-system-design/ Frontend Solution Video: https://www.youtube.com/watch?v=FUKGooQXih8 Frontend Solution Video: https://www.youtube.com/watch?v=FUKGooQXih8 https://www.youtube.com/watch?v=FUKGooQXih8 https://www.youtube.com/watch?v=FUKGooQXih8 Mock Interview: https://interviewing.io/mocks/faang-system-design-photo-sharing-service Mock Interview: https://interviewing.io/mocks/faang-system-design-photo-sharing-service https://interviewing.io/mocks/faang-system-design-photo-sharing-service https://interviewing.io/mocks/faang-system-design-photo-sharing-service Question 36: Design an On-Call Escalation System Company(s) asked: Uber Company(s) asked: Solution(s):No solution available online. However, here are things to consider:https://docs.google.com/document/d/1yngBZD2xNYfPRMIy1haQQcpSrZLUrIjErIM92d8mFiA/edit?usp=sharing Solution(s):No solution available online. However, here are things to consider:https://docs.google.com/document/d/1yngBZD2xNYfPRMIy1haQQcpSrZLUrIjErIM92d8mFiA/edit?usp=sharing Solution(s):No solution available online. However, here are things to consider:https://docs.google.com/document/d/1yngBZD2xNYfPRMIy1haQQcpSrZLUrIjErIM92d8mFiA/edit?usp=sharing https://docs.google.com/document/d/1yngBZD2xNYfPRMIy1haQQcpSrZLUrIjErIM92d8mFiA/edit?usp=sharing https://docs.google.com/document/d/1yngBZD2xNYfPRMIy1haQQcpSrZLUrIjErIM92d8mFiA/edit?usp=sharing Question 37: Design and Implement a Wire Transfer API Company(s) asked: Google, Capital One, Revolut Company(s) asked: Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/1895724/google-first-phone-write-a-wiretransfer-api https://leetcode.com/discuss/post/651695/revolut-backend-engineer-london-sep-2019-ybf3/Video Solution: https://www.youtube.com/watch?v=olfaBgJrUBI&t=365s Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/1895724/google-first-phone-write-a-wiretransfer-api Solution(s):Leetcode Discussion:https://leetcode.com/discuss/interview-question/1895724/google-first-phone-write-a-wiretransfer-api https://leetcode.com/discuss/interview-question/1895724/google-first-phone-write-a-wiretransfer-api https://leetcode.com/discuss/interview-question/1895724/google-first-phone-write-a-wiretransfer-api https://leetcode.com/discuss/post/651695/revolut-backend-engineer-london-sep-2019-ybf3/ https://leetcode.com/discuss/post/651695/revolut-backend-engineer-london-sep-2019-ybf3/ https://leetcode.com/discuss/post/651695/revolut-backend-engineer-london-sep-2019-ybf3/ https://leetcode.com/discuss/post/651695/revolut-backend-engineer-london-sep-2019-ybf3/ Video Solution: https://www.youtube.com/watch?v=olfaBgJrUBI&t=365s Video Solution: https://www.youtube.com/watch?v=olfaBgJrUBI&t=365s https://www.youtube.com/watch?v=olfaBgJrUBI&t=365s https://www.youtube.com/watch?v=olfaBgJrUBI&t=365s Question 38: Design a Live Comments Feature for Facebook Company(s) asked: Facebook Company(s) asked: Solution(s):Great Solution:https://www.hellointerview.com/learn/system-design/problem-breakdowns/fb-live-comments Video Solution from Meta Engineer: https://www.youtube.com/watch?v=LjLx0fCd1k8FB Engineering Blog: https://engineering.fb.com/2011/02/07/core-infra/live-commenting-behind-the-scenes/Leetcode Discussion: https://leetcode.com/discuss/post/583184/fbinstagram-live-comments-system-design-fqtzt/ Solution(s):Great Solution:https://www.hellointerview.com/learn/system-design/problem-breakdowns/fb-live-comments Solution(s):Great Solution:https://www.hellointerview.com/learn/system-design/problem-breakdowns/fb-live-comments https://www.hellointerview.com/learn/system-design/problem-breakdowns/fb-live-comments https://www.hellointerview.com/learn/system-design/problem-breakdowns/fb-live-comments Video Solution from Meta Engineer: https://www.youtube.com/watch?v=LjLx0fCd1k8 Video Solution from Meta Engineer: https://www.youtube.com/watch?v=LjLx0fCd1k8 https://www.youtube.com/watch?v=LjLx0fCd1k8 https://www.youtube.com/watch?v=LjLx0fCd1k8 FB Engineering Blog: https://engineering.fb.com/2011/02/07/core-infra/live-commenting-behind-the-scenes/ FB Engineering Blog: https://engineering.fb.com/2011/02/07/core-infra/live-commenting-behind-the-scenes/ https://engineering.fb.com/2011/02/07/core-infra/live-commenting-behind-the-scenes/ https://engineering.fb.com/2011/02/07/core-infra/live-commenting-behind-the-scenes/ Leetcode Discussion: https://leetcode.com/discuss/post/583184/fbinstagram-live-comments-system-design-fqtzt/ Leetcode Discussion: https://leetcode.com/discuss/post/583184/fbinstagram-live-comments-system-design-fqtzt/ https://leetcode.com/discuss/post/583184/fbinstagram-live-comments-system-design-fqtzt/ https://leetcode.com/discuss/post/583184/fbinstagram-live-comments-system-design-fqtzt/ Question 39: Design a Feature to Show the Number of Users Viewing a Page Company(s) asked: Booking.com Company(s) asked: Solution(s):No solution available online, but here are a few reads: One solution: https://medium.com/%40narasimha4789/from-zero-to-millions-designing-a-real-time-active-user-counter-system-a5d9545bd35eRelated: https://www.youtube.com/watch?v=TuKjdj9YXns Solution(s):No solution available online, but here are a few reads: Solution(s):No solution available online, but here are a few reads: One solution: https://medium.com/%40narasimha4789/from-zero-to-millions-designing-a-real-time-active-user-counter-system-a5d9545bd35e One solution: https://medium.com/%40narasimha4789/from-zero-to-millions-designing-a-real-time-active-user-counter-system-a5d9545bd35e https://medium.com/%40narasimha4789/from-zero-to-millions-designing-a-real-time-active-user-counter-system-a5d9545bd35e https://medium.com/%40narasimha4789/from-zero-to-millions-designing-a-real-time-active-user-counter-system-a5d9545bd35e Related: https://www.youtube.com/watch?v=TuKjdj9YXns Related: https://www.youtube.com/watch?v=TuKjdj9YXns https://www.youtube.com/watch?v=TuKjdj9YXns https://www.youtube.com/watch?v=TuKjdj9YXns Question 40: Design Facebook Likes Feature with Live Updates Company(s) asked: Facebook, Coinbase Company(s) asked: Solution(s):Video Solution:https://www.youtube.com/watch?v=T4bmFz-BSDk Solution(s):Video Solution:https://www.youtube.com/watch?v=T4bmFz-BSDk Solution(s):Video Solution:https://www.youtube.com/watch?v=T4bmFz-BSDk https://www.youtube.com/watch?v=T4bmFz-BSDk https://www.youtube.com/watch?v=T4bmFz-BSDk Question 41: Create a System to Migrate Large Data to Google Cloud Company(s) asked: Google, OCI Company(s) asked: Solution(s):No solution online, but here are some reads: 3 strategies: https://newrelic.com/blog/best-practices/migrating-data-to-cloud-avoid-downtime-strategiesRelated interview experience: https://leetcode.com/discuss/post/1733573/rubrik-file-transfer-interview-question-43hjl/ Solution(s):No solution online, but here are some reads: Solution(s):No solution online, but here are some reads: 3 strategies: https://newrelic.com/blog/best-practices/migrating-data-to-cloud-avoid-downtime-strategies 3 strategies: https://newrelic.com/blog/best-practices/migrating-data-to-cloud-avoid-downtime-strategies https://newrelic.com/blog/best-practices/migrating-data-to-cloud-avoid-downtime-strategies https://newrelic.com/blog/best-practices/migrating-data-to-cloud-avoid-downtime-strategies Related interview experience: https://leetcode.com/discuss/post/1733573/rubrik-file-transfer-interview-question-43hjl/ Related interview experience: https://leetcode.com/discuss/post/1733573/rubrik-file-transfer-interview-question-43hjl/ https://leetcode.com/discuss/post/1733573/rubrik-file-transfer-interview-question-43hjl/ https://leetcode.com/discuss/post/1733573/rubrik-file-transfer-interview-question-43hjl/ Question 42: Design a Distributed Botnet Company(s) asked: Facebook, Lyft Company(s) asked: Solution(s):MapReduce Paper — which coordinates a cluster of machines to do a task:https://static.googleusercontent.com/media/research.google.com/en//archive/mapreduce-osdi04.pdf Leetcode Discussion: https://leetcode.com/discuss/post/1375361/botnet-system-designfacebook-design-roun-jv0g/https://leetcode.com/discuss/post/850071/lyft-virtual-onsite-design-bots-to-downl-4v5q/Blind: https://www.teamblind.com/post/System-design-for-Botnet-5x0Mq34z Solution(s):MapReduce Paper — which coordinates a cluster of machines to do a task:https://static.googleusercontent.com/media/research.google.com/en//archive/mapreduce-osdi04.pdf Solution(s):MapReduce Paper — which coordinates a cluster of machines to do a task:https://static.googleusercontent.com/media/research.google.com/en//archive/mapreduce-osdi04.pdf https://static.googleusercontent.com/media/research.google.com/en//archive/mapreduce-osdi04.pdf https://static.googleusercontent.com/media/research.google.com/en//archive/mapreduce-osdi04.pdf Leetcode Discussion: https://leetcode.com/discuss/post/1375361/botnet-system-designfacebook-design-roun-jv0g/ Leetcode Discussion: https://leetcode.com/discuss/post/1375361/botnet-system-designfacebook-design-roun-jv0g/ https://leetcode.com/discuss/post/1375361/botnet-system-designfacebook-design-roun-jv0g/ https://leetcode.com/discuss/post/1375361/botnet-system-designfacebook-design-roun-jv0g/ https://leetcode.com/discuss/post/850071/lyft-virtual-onsite-design-bots-to-downl-4v5q/ https://leetcode.com/discuss/post/850071/lyft-virtual-onsite-design-bots-to-downl-4v5q/ https://leetcode.com/discuss/post/850071/lyft-virtual-onsite-design-bots-to-downl-4v5q/ https://leetcode.com/discuss/post/850071/lyft-virtual-onsite-design-bots-to-downl-4v5q/ Blind: https://www.teamblind.com/post/System-design-for-Botnet-5x0Mq34z Blind: https://www.teamblind.com/post/System-design-for-Botnet-5x0Mq34z https://www.teamblind.com/post/System-design-for-Botnet-5x0Mq34z https://www.teamblind.com/post/System-design-for-Botnet-5x0Mq34z Question 43: Create a Distributed File Transfer System like Bittorrent Company(s) asked: Google, Atlassian, Twitch Company(s) asked: Solution(s):Great paper on this topic:https://web.cs.ucla.edu/classes/cs217/05BitTorrent.pdf Article on this: https://medium.com/@abhinavcv007/bittorrent-part-1-the-engineering-behind-the-bittorrent-protocol-04e70ee01d58High Level Video Explanation: https://www.youtube.com/watch?v=6PWUCFmOQwQ Solution(s):Great paper on this topic:https://web.cs.ucla.edu/classes/cs217/05BitTorrent.pdf Solution(s):Great paper on this topic:https://web.cs.ucla.edu/classes/cs217/05BitTorrent.pdf https://web.cs.ucla.edu/classes/cs217/05BitTorrent.pdf https://web.cs.ucla.edu/classes/cs217/05BitTorrent.pdf Article on this: https://medium.com/@abhinavcv007/bittorrent-part-1-the-engineering-behind-the-bittorrent-protocol-04e70ee01d58 Article on this: https://medium.com/@abhinavcv007/bittorrent-part-1-the-engineering-behind-the-bittorrent-protocol-04e70ee01d58 https://medium.com/@abhinavcv007/bittorrent-part-1-the-engineering-behind-the-bittorrent-protocol-04e70ee01d58 https://medium.com/@abhinavcv007/bittorrent-part-1-the-engineering-behind-the-bittorrent-protocol-04e70ee01d58 High Level Video Explanation: https://www.youtube.com/watch?v=6PWUCFmOQwQ High Level Video Explanation: https://www.youtube.com/watch?v=6PWUCFmOQwQ https://www.youtube.com/watch?v=6PWUCFmOQwQ https://www.youtube.com/watch?v=6PWUCFmOQwQ Question 44: Design a Parts Compatibility Feature for an eCommerce Site Company(s) asked: Some FAANG Company(s) asked: Solution(s):No solution available online. Auto Parts compatibility is another way to describe this. Presumably, you might have a compatibility list for each part provided. Narrow down the problem to a particular type of part.This problem is more about frontend and DB design than about distributed systems. Solution(s):No solution available online. Auto Parts compatibility is another way to describe this. Solution(s):No solution available online. Auto Parts compatibility is another way to describe this. Presumably, you might have a compatibility list for each part provided. Narrow down the problem to a particular type of part. Presumably, you might have a compatibility list for each part provided. Narrow down the problem to a particular type of part. This problem is more about frontend and DB design than about distributed systems. This problem is more about frontend and DB design than about distributed systems. Question 45: Develop an Ads Management and Display System for a Social Feed Company(s) asked: Facebook, Google, Amazon, Pinterest Company(s) asked: Solution(s):No good solution online. This video gives an overview:https://www.youtube.com/watch?v=Zcv_899yqhI&t=2s Solution(s):No good solution online. This video gives an overview:https://www.youtube.com/watch?v=Zcv_899yqhI&t=2s Solution(s):No good solution online. This video gives an overview:https://www.youtube.com/watch?v=Zcv_899yqhI&t=2s https://www.youtube.com/watch?v=Zcv_899yqhI&t=2s https://www.youtube.com/watch?v=Zcv_899yqhI&t=2s By the time you read this, these solutions might be out of date. I will keep an updated list at SystemDesign.io By the time you read this, these solutions might be out of date. I will keep an updated list at SystemDesign.io SystemDesign.io SystemDesign.io
