public boolean exists ([string $keyName], [long $lifetime]) Checks if cache exists and it isn’t

public boolean delete (int | string $keyName) Deletes a value from the cache by its key

public setFrontend (mixed $frontend) ...

extends abstract class Phalcon\Cache\Backend

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

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

public mixed increment ([string $keyName], [long $value]) Increment of a given key, by number $value

extends abstract class Phalcon\Cache\Backend

public flush () Immediately invalidates all existing items.

public get (mixed $keyName, [mixed $lifetime]) Returns a cached content