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Caching
Caching is very important in Doctrine.
In this example for Metadata, Queries, and Results we set an array cache for the result_cache. Please note the array cache is for development only and shown here along side other cache types.
If you want to set a cache for query, result and metadata, you can
specify this inside your config/autoload/local.php
return [ 'doctrine' => [ 'configuration' => [ 'orm_default' => [ 'query_cache' => 'filesystem', 'result_cache' => 'array', 'metadata_cache' => 'apc', 'hydration_cache' => 'memcached', ], ], ],];The previous configuration takes into consideration different cache
adapters. You can specify any other adapter that implements the
Doctrine\Common\Cache\Cache interface. Find more
here.
Redis Example
This example uses a factory to create the Redis cache object. The Redis install used here can be found at https://github.com/phpredis/phpredis#class-redis See also https://redislabs.com/lp/php-redis/
module.config.php
namespace Db;return [ 'service_manager' => [ 'factories' => [ 'Db\Cache\Redis' => Db\Cache\RedisFactory::class, ], ], 'doctrine' => [ 'cache' => [ 'redis' => [ 'namespace' => 'Db_Doctrine', 'instance' => 'Db\Cache\Redis', ], ], 'configuration' => [ 'orm_default' => [ 'query_cache' => 'redis', 'result_cache' => 'redis', 'metadata_cache' => 'redis', 'hydration_cache' => 'redis', ], ], ],];Db\Cache\RedisFactory
namespace Db\Cache;use Interop\Container\ContainerInterface;use Redis;class RedisFactory{ public function __invoke( ContainerInterface $container, $requestedName, array $options = null ) { $redis = new Redis(); $redis->connect('127.0.0.1', 6379); return $redis; }}Read more about Caching.
How to enable and configure Second Level Cache
return [ 'doctrine' => [ 'configuration' => [ 'orm_default' => [ 'result_cache' => 'redis', // Second level cache reuse the cache defined in result cache 'second_level_cache' => [ 'enabled' => true, 'default_lifetime' => 200, 'default_lock_lifetime' => 500, 'file_lock_region_directory' => __DIR__ . '/../my_dir', 'regions' => [ 'My\FirstRegion\Name' => [ 'lifetime' => 800, 'lock_lifetime' => 1000, ], 'My\SecondRegion\Name' => [ 'lifetime' => 10, 'lock_lifetime' => 20, ], ], ], ], ], ],];You also need to add the Cache annotation to your model (read
more).
Read more about Second Level
Cache.