Warshadaha Caching Waayo: Sida loo helo Caching Resilient ee Symfony

The Symfony Cache component waa mid ka mid ah mid ka mid ah mid ka mid ah loo isticmaali karaa in arsenal of a developer. Most implementations stop at “install Redis” and wrap a few database calls in a Qalabka dhismaha iyo dhismaha dhismaha iyo dhismaha dhismaha dhismaha iyo dhismaha dhismaha dhismaha iyo dhismaha dhismaha dhismaha iyo dhismaha dhismaha dhismaha iyo dhismaha dhismaha dhismaha dhismaha iyo dhismaha dhismaha dhismaha dhismaha iyo dhismaha dhismaha dhismaha dhismaha. $cache->get() In Symfony 7.3, wax soo saarka Cache waa ka mid ah wax soo saarka key-value; waa nidaamka dhismaha ah oo ku habboon karo ah, shuruudaha shuruudaha shuruudaha shuruudaha, iyo codsiga caadiga ah. Markaad ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah. Haku (Laga yaabaa in la soo bandhigay) (Ee) ) iyo . latency concurrency security GDPR distributed invalidation The Architecture of Latency: Qalabka (Chain) Caching In macluumaadka microservices ama monoliths high-traffic, a network call to Redis (gaajin 1–3ms) waxay ka horumariyo in ay ka horumariyo in ka mid ah macluumaadka local (nanoseconds). Xafiiska waa a Sida loo isticmaali karaa cache ee loo isticmaali karaa. Haku . Chain Cache L1/L2 CPU L1 is local (APCu) L2 is shared (Redis) Haku Configuration Waxaad ka soo xiriir in ay ka soo xiriir APCu. If it misses, it reads from Redis, then populates APCu. composer require symfony/cache symfony/orm-pack redis Qalabka ( ee: config/packages/cache.yaml framework: cache: # Prefix all keys to avoid collisions in shared Redis instances prefix_seed: '%env(APP_SECRET)%' pools: # L2 Cache: Redis (Shared) cache.redis: adapter: cache.adapter.redis provider: 'redis://%env(REDIS_HOST)%:6379' default_lifetime: 3600 # 1 hour # L1 Cache: APCu (Local Memory) cache.apcu: adapter: cache.adapter.apcu default_lifetime: 60 # Short TTL to prevent stale local data # The Chain: L1 + L2 cache.layered: adapter: cache.adapter.chain provider: [cache.apcu, cache.redis] Haku Shuruudaha dhismaha ugu fiican ee shuruudaha dhismaha ah ee shuruudaha. namespace App\Service; use Symfony\Component\DependencyInjection\Attribute\Target; use Symfony\Contracts\Cache\CacheInterface; use Symfony\Contracts\Cache\ItemInterface; class DashboardService { public function __construct( #[Target('cache.layered')] private readonly CacheInterface $cache ) {} public function getStats(): array { // 1. Checks APCu. Hit? Return. // 2. Miss? Checks Redis. Hit? Populate APCu & Return. // 3. Miss? Run Callback. Populate Redis & APCu. return $this->cache->get('stats_v1', function (ItemInterface $item): array { $item->expiresAfter(3600); return $this->computeHeavyStats(); }); } private function computeHeavyStats(): array { // Simulation of heavy work return ['users' => 10500, 'revenue' => 50000]; } } Haku Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Haku soo xiriir Waqtiga Redis (CLI): KEYS * (Saacadda aad u aragto key). Check APCu (Web Panel): Waxaad ka heli karaa key. Taageerada waxaa laga yaabaa in ay ka mid ah 60 saacadood oo ka mid ah APCu. Qalabka Qalabka Qalabka Qalabka Qalabka Qalabka Qalabka Qalabka Qalabka Qalabka Qalabka “Cache Stampede” (hoos Thundering Herd) waxaa laga yaqaan “Cache Stampede” (hoos Thundering Herd) waxaa loo yaqaan “Cache Stampede” (Cache Stampede) oo ka mid ah ka mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ah mid ka mid ah mid ah mid ah mid ka mid ah mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ah mid ka mid ah mid ah mid ka mid ah. Symphony waxaa loo isticmaali karaa Shuruudaha dhismaha (shuruudaha dhismaha) waxaa loo isticmaali karaa . without Probabilistic Early Expiration Sida loo isticmaali karaa Sida loo yaqaan 'Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache Cache C Haku Ma rabtaa in aad u baahan tahay in aad u baahan tahay in aad u isticmaali karaa Parameter ee kharashka. $beta // $beta of 1.0 is standard. // Higher = recompute earlier. // 0 = disable. // INF = force recompute. $beta = 1.0; $value = $this->cache->get('stock_ticker_aapl', function (ItemInterface $item) { // The item ACTUALLY expires in 1 hour $item->expiresAfter(3600); return $this->stockApi->fetchPrice('AAPL'); }, $beta); Qalabka Mathematics Waxaad ka mid ah ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah. Markaad $item->expiresAfter(10). Waayo, waxaa loo isticmaali karaa in ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah. Waayo, callback waxaa loo yaabaa ka hor inta badan 10 toddobaad ka hor, oo ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah. The “Black Box”: codsiga transparency iyo Sodium Haku (PII) in Redis waa a If an attacker dumps your Redis memory, waxa uu leeyahay data. Personal Identifiable Information GDPR/security risk Symfony waxaa loo isticmaali karaa in ay u isticmaali karaa adapter cache ee Waxaan u isticmaali karaa dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha Marshaller SodiumMarshaller QEEBE Haku Sida loo yaqaan 'extension' waa PHP 8.x waxaa laga yaabaa libsodium installed enabled QEEBE Waayo, waxaan u baahan tahay in ay u isticmaali karaa "Marshaler default". “Marshaller” (tusaaleynta data ah) waxaa la soo bandhigay “A” “Marshaler” (waqtiisa in la soo xiriir) Deflate Sodium #config/services.yaml services: # 1. Generate a key: php -r "echo bin2hex(random_bytes(SODIUM_CRYPTO_SECRETBOX_KEYBYTES));" # Store this in .env.local: CACHE_DECRYPTION_KEY=your_hex_key # 2. Define the Marshaller Service app.cache.marshaller.secure: class: Symfony\Component\Cache\Marshaller\SodiumMarshaller arguments: - ['%env(hex2bin:CACHE_DECRYPTION_KEY)%'] - '@app.cache.marshaller.deflate' # Chain encryption OVER compression app.cache.marshaller.deflate: class: Symfony\Component\Cache\Marshaller\DeflateMarshaller arguments: ['@default_marshaller'] default_marshaller: class: Symfony\Component\Cache\Marshaller\DefaultMarshaller # 3. Use the custom marshaller in your cache adapter Symfony\Component\Cache\Adapter\RedisAdapter: arguments: $marshaller: '@app.cache.marshaller.secure' #config/packages/cache.yaml framework: cache: pools: cache.secure: adapter: cache.adapter.redis # We need to point the 'default_marshaller' of this pool to our secure one? # Actually, defining the adapter service globally as we did above # is the cleanest way if you want ALL redis caches encrypted. # Alternatively, use the provider syntax: # For specific pool encryption, we often have to define the service manually # or use a factory because framework.yaml config is limited for complex DI. Shuruudaha ugu fiican ee Symfony (Best Practice): Intaa loo yaabaa in ay ka mid ah adeegga global, si ay u dhigi karaa adeegga pool si ay u dhiso marshaller. # config/services.yaml services: app.cache.secure_pool: class: Symfony\Component\Cache\Adapter\RedisAdapter arguments: $redis: 'redis://%env(REDIS_HOST)%:6379' $marshaller: '@app.cache.marshaller.secure' tags: ['cache.pool'] Haku public function storeUserAddress(int $userId, string $address): void { // This data is compressed and encrypted in Redis $cacheItem = $this->securePool->getItem('user_addr_' . $userId); $cacheItem->set($address); $this->securePool->save($cacheItem); } Haku Nadiifinta data ee cache. Nala soo xiriir Redis via CLI: redis-cli. Waayo, waxaad ka heli karaa key. Waxaad ka mid ah dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha dhismaha Sida loo isticmaali karaa PHP: Waxaad ka heli karaa aadriiska plaintext. Shuruudaha ugu soo saarka: Tags & Messenger Sida loo isticmaali karaa, waxaa loo isticmaali karaa mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah. Waayo, waxaa loo yaabaa in aad u soo bandhigay in aad u isticmaali karaa Symfony Messenger. Qalabka Waayo, waxaa loo yaabaa in ay ka mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ah mid ka mid ah mid ah mid ah mid ka mid ah mid ah mid ah. Cache local in APCu (wax yar) Sida loo isticmaali karaa, waxaa loo isticmaali karaa bus. Waayo, waxaa loo isticmaali karaa in ay ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah. QEEBE composer require symfony/messenger Waayo, waxaa loo isticmaali karaa "Pub / Sub" (Fanout), sidaas oo ka mid ah server waa in la xira. #config/packages/messenger.yaml framework: messenger: transports: # Use a fanout exchange so ALL pods receive the message cache_invalidation: dsn: '%env(MESSENGER_TRANSPORT_DSN)%' options: exchange: type: fanout name: cache_invalidation_fanout codka 1. The Invalidation Message namespace App\Message; final readonly class InvalidateTagsMessage { public function __construct( public array $tags ) {} } 2. The Handler This handler runs on every server. namespace App\MessageHandler; use App\Message\InvalidateTagsMessage; use Symfony\Component\Messenger\Attribute\AsMessageHandler; use Symfony\Contracts\Cache\TagAwareCacheInterface; use Symfony\Component\DependencyInjection\Attribute\Target; #[AsMessageHandler] final readonly class InvalidateTagsHandler { public function __construct( #[Target('cache.layered')] // Target our Chain Cache private TagAwareCacheInterface $cache ) {} public function __invoke(InvalidateTagsMessage $message): void { // This invalidates the local APCu layer AND the shared Redis layer $this->cache->invalidateTags($message->tags); } } 3. The Service Triggering the Change namespace App\Service; use App\Message\InvalidateTagsMessage; use Symfony\Component\Messenger\MessageBusInterface; use Symfony\Contracts\Cache\TagAwareCacheInterface; class ProductService { public function __construct( private TagAwareCacheInterface $cache, private MessageBusInterface $bus ) {} public function updateProduct(int $id, array $data): void { // 1. Update Database... // 2. Invalidate // We do NOT call $cache->invalidateTags() directly here. // Because that would only clear THIS server's APCu and the shared Redis. // Other servers would remain stale. $this->bus->dispatch(new InvalidateTagsMessage(["product_{$id}"])); } } Qalabka Qalabka Qalabka Qalabka Qalabka Qalabka Sida loo helo boilerplate in every service method, la soo saarka a Qalabka waxaa loo isticmaali karaa automatically by using the Marka . $cache->get() PHP 8 Attribute Decorator Pattern Event Subscription Sida loo isticmaali karaa, waxaa loo isticmaali karaa a Qalabka ah, oo waa in aad u hesho iyo in aad u hesho. Kernel::CONTROLLER_ARGUMENTS The Attribute namespace App\Attribute; use Attribute; #[Attribute(Attribute::TARGET_METHOD)] final readonly class Cacheable { public function __construct( public string $pool = 'cache.app', public int $ttl = 3600, public ?string $key = null ) {} } Subscripts ee Event Markaas ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah. Sida loo isticmaali karaa, waxaa loo isticmaali karaa mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah. namespace App\EventSubscriber; use App\Attribute\Cacheable; use Symfony\Component\EventDispatcher\EventSubscriberInterface; use Symfony\Component\HttpKernel\Event\ControllerEvent; use Symfony\Component\HttpKernel\KernelEvents; use Symfony\Component\DependencyInjection\ServiceLocator; use Symfony\Contracts\Cache\ItemInterface; class CacheableSubscriber implements EventSubscriberInterface { public function __construct( private ServiceLocator $cachePools // Inject locator to find pools dynamically ) {} public static function getSubscribedEvents(): array { return [ // High priority to catch request before execution KernelEvents::CONTROLLER => ['onKernelController', 10], ]; } public function onKernelController(ControllerEvent $event): void { $controller = $event->getController(); // Handle array callables [$object, 'method'] if (is_array($controller)) { $method = new \ReflectionMethod($controller[0], $controller[1]); } elseif (is_object($controller) && is_callable($controller)) { $method = new \ReflectionMethod($controller, '__invoke'); } else { return; } $attributes = $method->getAttributes(Cacheable::class); if (empty($attributes)) { return; } /** @var Cacheable $cacheable */ $cacheable = $attributes[0]->newInstance(); if (!$this->cachePools->has($cacheable->pool)) { return; } $pool = $this->cachePools->get($cacheable->pool); // Generate a key based on Controller Class + Method + Request Params // This is a simplified key generation strategy $request = $event->getRequest(); $cacheKey = $cacheable->key ?? 'ctrl_' . md5($request->getUri()); // We cannot easily "skip" the controller execution inside a Listener // using the Cache Contract pattern nicely without replacing the controller. // // For a TRULY robust attribute implementation, one should use // a "Service Decorator" logic, but for Controllers, we can replace the // controller callable with a closure that wraps the cache logic. $originalController = $event->getController(); $newController = function() use ($pool, $cacheKey, $cacheable, $originalController, $request) { return $pool->get($cacheKey, function (ItemInterface $item) use ($cacheable, $originalController, $request) { $item->expiresAfter($cacheable->ttl); // Execute the original controller // Note: We need to manually resolve arguments or pass the request // This part is tricky in raw PHP. // In Symfony we can simply execute the original callable // IF we have the resolved arguments. // SIMPLIFICATION for article: // Assuming controller takes Request object or no args return $originalController($request); }); }; $event->setController($newController); } } Ma rabtaa Qalabka waaweyn ee A Waayo, Waayo, sidoo kale waxaa laga yaabaa in aad u isticmaali karaa. register ServiceLocator Subscriber Qalabka ugu horeysay waa in ay u isticmaali karaa in ay u isticmaali karaa Ideally, for services, aad u isticmaali karaa Sida loo yaqaan "Service Definition" ama "Controllers" waxaa loo yaqaan "Symphony Way" oo loo yaqaan "Symphony Way". Kernel execution flow #[AsDecorator] Qalabka Haku Waxaa laga yaabaa in ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah. Qalabka, iyo Qalabka waa dhismaha. CacheInterface GDPR Black Friday traffic Qalabka waxaa laga yaabaa in ay ku saabsan - Sida loo helo, Qalabka competition, Waayo, iyo Sida loo yaqaan "Symphony" waxaa loo yaqaan "Symphony" iyo "Symphony" waxaa loo yaqaan "Symphony" iyo "Symphony" oo loo yaqaan "Symphony" iyo "Symphony" oo loo yaqaan "Symphony" iyo "Symphony" oo loo yaqaan "Symphony" iyo "Symphony" waxaa loo yaqaan "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony" iyo "Symphony". Chain Caching Probabilistic Expiration Sodium Encryption Messenger-based Invalidation Waayo, sidoo kale waxaa laga yaabaa in ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah mid ah mid ka mid ah mid ah mid ka mid ah mid ka mid ah. Nala soo xiriir Haddii aad u helo macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka macluumaadka. Ma rabtaa in la isticmaali karaa Marshaller si ay u isticmaali karaa adeegyada kala duwan? Sida loo isticmaali karaa wax soo saarka ah oo ka mid ah macluumaadka multi-region? Sida loo yaabaa in la soo xiriir ee LinkedIn, waxaan ka soo xiriir oo ku saabsan arkimiyada, sida loo yaqaan warshadaha, iyo loo yaabaa software ugu fiican.