How to: Caching and Locking
*Libraries for caching data and acquiring locks.*

* [APIx Cache](https://github.com/apix/cache) - A thin PSR-6 cache wrapper to various caching backends emphasizing cache tagging and indexing.
* [CacheTool](https://github.com/gordalina/cachetool) - A tool to clear APC/opcode caches from the command line.
* [CakePHP Cache](https://github.com/cakephp/cache) - A caching library.
* [Doctrine Cache](https://github.com/doctrine/cache) - A caching library.
* [Metaphore](https://github.com/sobstel/metaphore) - Cache slam defense using a semaphore to prevent dogpile effect.
* [Stash](https://github.com/tedious/Stash) - Another library for caching.
* [Laminas Cache](https://github.com/laminas/laminas-cache) - Another caching library.
* [Lock](https://github.com/php-lock/lock) - A lock library to provide exclusive execution.