Backend

Phalcon\Cache\Backend

Usage examples of the adapters available here:

Aerospike

This adapter uses an Aerospike Database to store the cached content.

To use this adapter on your machine, you need at least:

• Aerospike Server >= 3.5.3
• Aerospike PHP Extension

Usage:

use Phalcon\Cache\Backend\Aerospike as BackendCache;
use Phalcon\Cache\Frontend\Data;

$di->set(
    'cache',
    function () {
        $cache = new BackendCache(
            new Data(
                [
                    'lifetime' => 3600,
                ]
            ),
            [
                'hosts' => [
                    [
                        'addr' => '127.0.0.1',
                        'port' => 3000,
                    ],
                ],
                'persistent' => true,
                'namespace'  => 'test',
                'prefix'     => 'cache_',
                'options'    => [
                    \Aerospike::OPT_CONNECT_TIMEOUT => 1250,
                    \Aerospike::OPT_WRITE_TIMEOUT   => 1500,
                ],
            ]
        );

        return $cache;
    }
);

Database

This adapter uses a database backend to store the cached content:

use Phalcon\Cache\Backend\Database;
use Phalcon\Cache\Frontend\Data;
use Phalcon\Db\Adapter\Pdo\Mysql;

$di->set(
    'cache',
    function () {
        // Create a connection
        $connection = new Mysql(
            [
                'host'     => 'localhost',
                'username' => 'root',
                'password' => 'secret',
                'dbname'   => 'cache_db',
            ]
        );

        // Create a Data frontend and set a default lifetime to 1 hour
        $frontend = new Data(
            [
                'lifetime' => 3600,
            ]
        );

        // Create the cache passing the connection
        $cache = new Database(
            $frontend,
            [
                'db'    => $connection,
                'table' => 'cache_data',
            ]
        );

        return $cache;
    }
);

This adapter uses the following table to store the data:

 CREATE TABLE `cache_data` (
  `key_name` varchar(40) NOT NULL,
  `data` text,
  `lifetime` int(15) unsigned NOT NULL,
  PRIMARY KEY (`key_name`),
  KEY `lifetime` (`lifetime`)
)

Using the cache adapter:

$time = $this->cache->get('le-time');

if ($time === null) {
    $time = date('r');

    $this->cache->save('le-time', $time);
}

echo $time;

Wincache

This adapter uses windows cache extension for PHP

NullCache

NullCache adapter can be useful when you have dependency injection and wants to provider an Adapter that does nothing.