public flush () Immediately invalidates all existing items.

public save ([int | string $keyName], [string $content], [long $lifetime], [boolean $stopBuffer])

public long decrement ([string $keyName], [long $value]) Decrement of $keyName by given $value

public start () Starts output frontend. Actually, does nothing

public string beforeStore (mixed $data) Serializes data before storing them

public isBuffering () Check whether if frontend is buffering output

public isStarted () Checks whether the cache has starting buffering or not

public queryKeys ([string $prefix]) Query the existing cached keys

abstract public beforeStore (mixed $data) ...

public flush () Immediately invalidates all existing items.