php-psr-simple-cache 1.0.1-1 (amd64 binary) in ubuntu lunar

 PHP FIG Simple Cache PSR holds all interfaces related to PSR-16.
 .
 Note that this is not a cache implementation of its own. It is merely an
 interface that describes a cache implementation. See the specification for
 more details.
 .
 You can find implementations of the specification by looking for packages
 providing the php-psr-simple-cache-implementation virtual package.