👀 Views: 1246 💬 Answers: 1 📅 Created: 2025-06-13

php symfony caching PHP

I'm deploying to production and This might be a silly question, but I'm experiencing unexpected behavior while trying to cache database query results using the Symfony Cache component in my PHP 8.1 application... I have set up a caching service in my Symfony application to store results from a query to the database, but when I attempt to retrieve the cached data, it seems to be returning stale results or sometimes even null. Here’s a snippet of my service configuration: ```yaml services: App\Service\MyService: arguments: - '@cache.app' ``` And in my service class, I’m using it as follows: ```php namespace App\Service; use Doctrine\ORM\EntityManagerInterface; use Symfony\Contracts\Cache\CacheInterface; class MyService { private $cache; private $entityManager; public function __construct(CacheInterface $cache, EntityManagerInterface $entityManager) { $this->cache = $cache; $this->entityManager = $entityManager; } public function getCachedData($key) { return $this->cache->get($key, function () { // Simulating a database call return $this->entityManager->getRepository(MyEntity::class)->findAll(); }); } } ``` The caching seems to work initially, but after making updates to the database, the getCachedData method still returns the old results. I've tried clearing the cache manually using the console command, but it doesn't seem to resolve the scenario. I also set the cache to have an expiration time of 60 seconds: ```php $this->cache->get($key, function (ItemInterface $item) { $item->expiresAfter(60); return $this->entityManager->getRepository(MyEntity::class)->findAll(); }); ``` However, the results continue beyond the expiration time as well. I’m not seeing any errors in the logs, and I’m a bit stumped on how I can ensure the cache is invalidated correctly after a database update. Any insights or best practices on how to handle this situation more effectively would be greatly appreciated. Any help would be greatly appreciated! This is for a web app running on Ubuntu 22.04.