lru-example.php

<?php

/** @var LRUCacheInterface<User> $cache */
$cache = new LRUCache(50);

foreach ($taskRepository->findAll() as $task) {
    // get the user from cache
    // phpStorm will correctly resolve the $user as the User class
    $user = $cache->get($task->getUserId());
    
    if (null === $user) {
        $user = $userRepository->findById($task->getUserId());
        $cache->add($user->getId(), $user);
    }
    
    $task->execute($user);
}