Pimf\Cache\Storages\Redis

Complexity

Total Complexity

7

Size/Duplication

Total Lines	79
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Importance

Changes

0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	has()	0	4	1
A	retrieve()	0	8	2
A	put()	0	5	1
A	forever()	0	4	1
A	forget()	0	4	1

<?php
/**
 * Pimf
 *
 * @copyright Copyright (c)  Gjero Krsteski (http://krsteski.de)
 * @license   http://opensource.org/licenses/MIT MIT License
 */

namespace Pimf\Cache\Storages;

/**
 * Redis usage
 *
 * <code>
 *    // Put an item in the cache for 15 minutes
 *    Cache::put('name', 'Robin', 15);
 * </code>
 *
 * @package Cache_Storages
 * @author  Gjero Krsteski <gjero@krsteski.de>
 */
class Redis extends Storage
{
    /**
     * The Redis database instance.
     *
     * @var \Pimf\Redis
     */
    protected $redis;

    /**
     * @param \Pimf\Redis $redis
     */
    public function __construct(\Pimf\Redis $redis)
    {
        $this->redis = $redis;
    }

    /**
     * Determine if an item exists in the cache.
     *
     * @param string $key
     *
     * @return bool
     */
    public function has($key)
    {
        return ($this->redis->get($key) !== null);
    }

    /**
     * Retrieve an item from the cache storage.
     *
     * @param string $key
     *
     * @return mixed
     */
    protected function retrieve($key)
    {
        if (!is_null($cache = $this->redis->get($key))) {
            return unserialize($cache);
        }

        return null;
    }

    /**
     * Write an item to the cache for a given number of minutes.
     *
     * @param string $key
     * @param mixed  $value
     * @param int    $minutes
     */
    public function put($key, $value, $minutes)
    {
        $this->forever($key, $value);
        $this->redis->expire($key, $minutes * 60);
    }

    /**
     * Write an item to the cache that lasts forever.
     *
     * @param string $key
     * @param        $value
     */
    public function forever($key, $value)
    {
        $this->redis->set($key, serialize($value));
    }

    /**
     * Delete an item from the cache.
     *
     * @param string $key
     */
    public function forget($key)
    {
        $this->redis->del($key);
    }
}