public boolean exists ([string $keyName], [long $lifetime]) Checks if cache exists and it isn’t
abstract public isFresh () ...
public stop () Stops output frontend
public boolean delete (int | string $keyName) Deletes a value from the cache by its key
public getLifetime () Returns the cache lifetime
public setFrontend (mixed $frontend) ...
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
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