urodoz/cachemanager

Bundle for Symfony 2 to handle cache management

Urodoz CacheManager

Bundle to handle cache management for Symfony 2, _(*1)

• Installation

Configuration

Update your config.yml file to configure memcache connections and/or redis connection (temporary in development for multiple redis servers), _(*2)

urodoz_cache:
    memcache:
        servers: ["127.0.0.1:11211"]
    redis:
        servers: ["192.168.1.120:6379"]

Events

Cache hit, _(*3)

On cache hit the event urodoz.events.cachehit is dispatched on the Symfony 2 EventDispatcher. The event is from class : Urodoz\Bundle\CacheBundle\Event\CacheHitEvent. Contains information about the key used, the content stored on the cache implementation and implementation used., _(*4)

Missed cache hit, _(*5)

On cache hit the event urodoz.events.missed_cachehit is dispatched on the Symfony 2 EventDispatcher. The event is from class : Urodoz\Bundle\CacheBundle\Event\MissedCacheHitEvent. Contains information about the key used and the implementation., _(*6)

Usage

To store and retrieve data from memcache servers pool (as service), _(*7)

//Retrieve the service from the ContainerInterface
$cacheManager = $container->get("urodoz_cachemanager");
//Store value
$cacheManager->implementation("memcache")->set($key, $value, 3600);
//Retrieve value
$cacheManager->implementation("memcache")->get($key);

When calling to method implementation, it sets the active implementation on the CacheManager service. You can avoid to set again the implementation on the next calls, _(*8)

//Storing on memcache
$cacheManager = $container->get("urodoz_cachemanager");
$cacheManager->implementation("memcache")->set($key1, $value1);
$cacheManager->set($key2, $value2);
$cacheManager->set($key3, $value3);
$cacheManager->set($key4, $value4);
//Retrieving from memcache
$data["one"] = $cacheManager->get($key2);
$data["two"] = $cacheManager->get($key3);
$data["three"] = $cacheManager->get($key4);

To store and retrieve data from the redis server (as service), you only need to change the implementation requested to cache manager service, _(*9)

//Retrieve the service from the ContainerInterface
$cacheManager = $container->get("urodoz_cachemanager");
//Store value
$cacheManager->implementation("redis")->set($key, $value, 3600);
//Retrieve value
$cacheManager->implementation("redis")->get($key);

Prefix generation

The event throwed to update the cache key is urodoz.events.update_cachekey , this is a sample configuration, _(*10)

urodoz_cache:
    memcache:
        servers: ["127.0.0.1:11211"]
    redis:
        servers: ["192.168.1.120:6379"]

Service configuration attached as listener:, _(*11)

    sample.cachePrefixGenerator:
        class: Sample\Bundle\CoreBundle\Service\CachePrefixGenerator
        calls:
            - ["setContainer", [@service_container]]
        tags:
            - { name: kernel.event_listener, event: urodoz.events.update_cachekey, method: onCacheKeyUpdate }

Service class:, _(*12)

<?php

namespace Urodoz\Bundle\CacheBundle\Tests\Service\Mocks;

use Symfony\Component\DependencyInjection\ContainerAwareInterface;
use Urodoz\Bundle\CacheBundle\Event\UpdateCacheKeyEvent;

class PrefixGenerator implements ContainerAwareInterface
{

    //....

    public function onCacheKeyUpdate(UpdateCacheKeyEvent $event)
    {
        $event->addPrefix($this->container->getParameter("applicationName")."_");
        return $event;
    }

}