<?php namespace WP_Ultimo\Dependencies\Amp\Cache; use WP_Ultimo\Dependencies\Amp\Promise; use WP_Ultimo\Dependencies\Amp\Success; /** * Cache implementation that just ignores all operations and always resolves to `null`. */ class NullCache implements Cache { /** @inheritdoc */ public function get(string $key) : Promise { return new Success(); } /** @inheritdoc */ public function set(string $key, string $value, int $ttl = null) : Promise { /** @var Promise<void> */ return new Success(); } /** @inheritdoc */ public function delete(string $key) : Promise { return new Success(\false); } }