All classes that implement Cache

class \Doctrine\Common\Cache\ApcCache
class \Doctrine\Common\Cache\ArrayCache
class \Doctrine\Common\Cache\CacheProvider implements Cache
class \Doctrine\Common\Cache\FileCache
class \Doctrine\Common\Cache\FilesystemCache
class \Doctrine\Common\Cache\MemcacheCache
class \Doctrine\Common\Cache\MemcachedCache
class \Doctrine\Common\Cache\PhpFileCache
class \Doctrine\Common\Cache\RedisCache
class \Doctrine\Common\Cache\WinCacheCache
class \Doctrine\Common\Cache\XcacheCache
class \Doctrine\Common\Cache\ZendDataCache