README

A CakePHP 2.x plugin enabling Redis backed sessions and caching. Uses the Predis library to communicate with Redis.

Had to resurrect this plugin for a legacy project that needed to connect to redis via TLS/SSL.

Installation

Run composer command

composer require peloncano/cakephp-plugin-redis-cache

Initial setup required

The plugin includes its own bootstrap.php file which must be loaded in the application app/Config/bootstrap.php file like so:

CakePlugin::load(array('RedisCache' => array('bootstrap' => true)));

The plugin will, by default, communicate with a Redis server setup on localhost at port 6379 with no password. However you may use remote Redis servers if desired. You can also configure different servers for caching and session duties as the exact configuration of these may be slightly different for best performance.

Using for Caching:

Connection configuration

if loading a configuration file (Doc):

$config['RedisCache'] = array(
    'cache' => array(
        'password' => '',
        'port' => 6379,
        'database' => 0
    )
);

If TLS/SSL is needed:

$config['RedisCache'] = array(
    'cache' => array(
        'scheme' => 'tls',
        'ssl' => ['verify_peer' => false], // any other predis SSL related options here
        'host' => 'localhost',
        'password' => '',
        'port' => 6379, // could be different for tls connections
        'database' => 0
    )
);

In app/Config/bootstrap.php you can now configure your cache

Note: Make sure this is done after the loading of the plugin

Cache::config('default', array('engine' => 'RedisCache.Redis'));

// with prefix and duration
Cache::config('other_cache_with_prefix', array(
		'engine' => 'RedisCache.Redis', 
		'prefix' => 'other_cache_with_prefix', 
		'duration'=> '+1 week'
));
	
// `throwExceptions` set to TRUE will throw exceptions on redis connection issues
// by default this is FALSE which will allow the app to continue working if caching fails
// due to redis/predis connection issues
Cache::config('other_cache', array(
		'engine' => 'RedisCache.Redis', 
		'throwExceptions' => true
));

Using for Session handling (PENDING):

In app/Config/core.php under the session configuration section:

Configure::write('Session', array(
        'cookie' => {{YOUR COOKIE NAME HERE}}
        , 'timeout' => 60
        , 'handler' => array(
            'engine' => 'RedisCache.RedisSession'
        )
	));

Global Prefix

You can add a global prefix to namespace all keys by adding the following lines right after the plugin is loaded.

For Cache:

RedisConfig::$globalCachePrefix = Inflector::slug('my app cache prefix') . ':'; // use ':' to group keys in redis

For Session:

RedisConfig::$globalSessionPrefix= Inflector::slug('my app session prefix') . ':'; // use ':' to group keys in redis

Note: This would apply before any cache specific prefix