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    <h3>Editing: RedisStore.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

namespace Illuminate\Cache;

use Illuminate\Contracts\Cache\LockProvider;
use Illuminate\Contracts\Redis\Factory as Redis;
use Illuminate\Redis\Connections\PhpRedisConnection;

class RedisStore extends TaggableStore implements LockProvider
{
    /**
     * The Redis factory implementation.
     *
     * @var \Illuminate\Contracts\Redis\Factory
     */
    protected $redis;

    /**
     * A string that should be prepended to keys.
     *
     * @var string
     */
    protected $prefix;

    /**
     * The Redis connection instance that should be used to manage locks.
     *
     * @var string
     */
    protected $connection;

    /**
     * The name of the connection that should be used for locks.
     *
     * @var string
     */
    protected $lockConnection;

    /**
     * Create a new Redis store.
     *
     * @param  \Illuminate\Contracts\Redis\Factory  $redis
     * @param  string  $prefix
     * @param  string  $connection
     * @return void
     */
    public function __construct(Redis $redis, $prefix = '', $connection = 'default')
    {
        $this-&gt;redis = $redis;
        $this-&gt;setPrefix($prefix);
        $this-&gt;setConnection($connection);
    }

    /**
     * Retrieve an item from the cache by key.
     *
     * @param  string|array  $key
     * @return mixed
     */
    public function get($key)
    {
        $value = $this-&gt;connection()-&gt;get($this-&gt;prefix.$key);

        return ! is_null($value) ? $this-&gt;unserialize($value) : null;
    }

    /**
     * Retrieve multiple items from the cache by key.
     *
     * Items not found in the cache will have a null value.
     *
     * @param  array  $keys
     * @return array
     */
    public function many(array $keys)
    {
        $results = [];

        $values = $this-&gt;connection()-&gt;mget(array_map(function ($key) {
            return $this-&gt;prefix.$key;
        }, $keys));

        foreach ($values as $index =&gt; $value) {
            $results[$keys[$index]] = ! is_null($value) ? $this-&gt;unserialize($value) : null;
        }

        return $results;
    }

    /**
     * Store an item in the cache for a given number of seconds.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @param  int  $seconds
     * @return bool
     */
    public function put($key, $value, $seconds)
    {
        return (bool) $this-&gt;connection()-&gt;setex(
            $this-&gt;prefix.$key, (int) max(1, $seconds), $this-&gt;serialize($value)
        );
    }

    /**
     * Store multiple items in the cache for a given number of seconds.
     *
     * @param  array  $values
     * @param  int  $seconds
     * @return bool
     */
    public function putMany(array $values, $seconds)
    {
        $this-&gt;connection()-&gt;multi();

        $manyResult = null;

        foreach ($values as $key =&gt; $value) {
            $result = $this-&gt;put($key, $value, $seconds);

            $manyResult = is_null($manyResult) ? $result : $result &amp;&amp; $manyResult;
        }

        $this-&gt;connection()-&gt;exec();

        return $manyResult ?: false;
    }

    /**
     * Store an item in the cache if the key doesn't exist.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @param  int  $seconds
     * @return bool
     */
    public function add($key, $value, $seconds)
    {
        $lua = &quot;return redis.call('exists',KEYS[1])&lt;1 and redis.call('setex',KEYS[1],ARGV[2],ARGV[1])&quot;;

        return (bool) $this-&gt;connection()-&gt;eval(
            $lua, 1, $this-&gt;prefix.$key, $this-&gt;serialize($value), (int) max(1, $seconds)
        );
    }

    /**
     * Increment the value of an item in the cache.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return int
     */
    public function increment($key, $value = 1)
    {
        return $this-&gt;connection()-&gt;incrby($this-&gt;prefix.$key, $value);
    }

    /**
     * Decrement the value of an item in the cache.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return int
     */
    public function decrement($key, $value = 1)
    {
        return $this-&gt;connection()-&gt;decrby($this-&gt;prefix.$key, $value);
    }

    /**
     * Store an item in the cache indefinitely.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return bool
     */
    public function forever($key, $value)
    {
        return (bool) $this-&gt;connection()-&gt;set($this-&gt;prefix.$key, $this-&gt;serialize($value));
    }

    /**
     * Get a lock instance.
     *
     * @param  string  $name
     * @param  int  $seconds
     * @param  string|null  $owner
     * @return \Illuminate\Contracts\Cache\Lock
     */
    public function lock($name, $seconds = 0, $owner = null)
    {
        $lockName = $this-&gt;prefix.$name;

        $lockConnection = $this-&gt;lockConnection();

        if ($lockConnection instanceof PhpRedisConnection) {
            return new PhpRedisLock($lockConnection, $lockName, $seconds, $owner);
        }

        return new RedisLock($lockConnection, $lockName, $seconds, $owner);
    }

    /**
     * Restore a lock instance using the owner identifier.
     *
     * @param  string  $name
     * @param  string  $owner
     * @return \Illuminate\Contracts\Cache\Lock
     */
    public function restoreLock($name, $owner)
    {
        return $this-&gt;lock($name, 0, $owner);
    }

    /**
     * Remove an item from the cache.
     *
     * @param  string  $key
     * @return bool
     */
    public function forget($key)
    {
        return (bool) $this-&gt;connection()-&gt;del($this-&gt;prefix.$key);
    }

    /**
     * Remove all items from the cache.
     *
     * @return bool
     */
    public function flush()
    {
        $this-&gt;connection()-&gt;flushdb();

        return true;
    }

    /**
     * Begin executing a new tags operation.
     *
     * @param  array|mixed  $names
     * @return \Illuminate\Cache\RedisTaggedCache
     */
    public function tags($names)
    {
        return new RedisTaggedCache(
            $this, new TagSet($this, is_array($names) ? $names : func_get_args())
        );
    }

    /**
     * Get the Redis connection instance.
     *
     * @return \Illuminate\Redis\Connections\Connection
     */
    public function connection()
    {
        return $this-&gt;redis-&gt;connection($this-&gt;connection);
    }

    /**
     * Get the Redis connection instance that should be used to manage locks.
     *
     * @return \Illuminate\Redis\Connections\Connection
     */
    public function lockConnection()
    {
        return $this-&gt;redis-&gt;connection($this-&gt;lockConnection ?? $this-&gt;connection);
    }

    /**
     * Specify the name of the connection that should be used to store data.
     *
     * @param  string  $connection
     * @return void
     */
    public function setConnection($connection)
    {
        $this-&gt;connection = $connection;
    }

    /**
     * Specify the name of the connection that should be used to manage locks.
     *
     * @param  string  $connection
     * @return $this
     */
    public function setLockConnection($connection)
    {
        $this-&gt;lockConnection = $connection;

        return $this;
    }

    /**
     * Get the Redis database instance.
     *
     * @return \Illuminate\Contracts\Redis\Factory
     */
    public function getRedis()
    {
        return $this-&gt;redis;
    }

    /**
     * Get the cache key prefix.
     *
     * @return string
     */
    public function getPrefix()
    {
        return $this-&gt;prefix;
    }

    /**
     * Set the cache key prefix.
     *
     * @param  string  $prefix
     * @return void
     */
    public function setPrefix($prefix)
    {
        $this-&gt;prefix = ! empty($prefix) ? $prefix.':' : '';
    }

    /**
     * Serialize the value.
     *
     * @param  mixed  $value
     * @return mixed
     */
    protected function serialize($value)
    {
        return is_numeric($value) &amp;&amp; ! in_array($value, [INF, -INF]) &amp;&amp; ! is_nan($value) ? $value : serialize($value);
    }

    /**
     * Unserialize the value.
     *
     * @param  mixed  $value
     * @return mixed
     */
    protected function unserialize($value)
    {
        return is_numeric($value) ? $value : unserialize($value);
    }
}
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