APCu is an in-memory key-value store for PHP.
Keys are of type string and values can be any PHP variables.
APCu only supports userland caching of variables
https://pecl.php.net/package/APCU
Based on initial work from Nicolas Carrier <nicolas.carrier@orolia.com>
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>