use Symfony\Component\Cache\Adapter\ApcuAdapter; $cache = new ApcuAdapter(); $key = 'my_db_query_cache_key'; // A unique key for the cached data $cachedResult = $cache->getItem($key); if ($cachedResult->isHit()) { // The result was found in cache $result = $cachedResult->get(); } else { // The result was not found in cache $result = expensiveDatabaseQuery(); // Some time consuming database query // Store the result in cache for later use $cachedResult->set($result); $cache->save($cachedResult); } // Use the cached or fresh result data useResultData($result);In this example code, we create an APCu cache adapter and use it to store the result of a time consuming database query. We first check if the data exists in cache by using a unique key to identify the cached data. If it is found, we use it. If not, we fetch the data from the database, store it in cache and continue to use it in the same request or any subsequent requests until the data is evicted from cache. The "Symfony Cache" library provides a wide range of caching mechanisms, so it is important to choose the appropriate caching mechanism for your caching requirements.