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# PSR-6 In-Memory Cache A [PSR-6](https://www.php-fig.org/psr/psr-6/) In-Memory cache that can be used as a default implementation and in tests. [](https://packagist.org/packages/beste/in-memory-cache) [](https://packagist.org/packages/beste/in-memory-cache) [](https://packagist.org/packages/beste/in-memory-cache/stats) [](https://packagist.org/packages/beste/in-memory-cache/stats) [](https://github.com/beste/in-memory-cache-php/actions/workflows/tests.yml) ## Installation ```shell composer require beste/in-memory-cache ``` ## Usage ```php use Beste\Cache\InMemoryCache; $cache = new InMemoryCache(); $item = $cache->getItem('key'); assert($item->isHit() === false); assert($item->get() === null); $item->set('value'); $cache->save($item); // Later... $item = $cache->getItem('key'); assert($item->isHit() === true); assert($item->get() === 'value'); ``` You can also provide your own [PSR-20](https://www.php-fig.org/psr/psr-20/) clock implementation, for example a frozen clock for testing, for example from the [`beste/clock` library](https://github.com/beste/clock). ```php use Beste\Clock\FrozenClock; use Beste\Cache\InMemoryCache; $clock = FrozenClock::fromUTC() $cache = new InMemoryCache(); $item = $cache->getItem('key'); $item->set('value')->expiresAfter(new DateInterval('PT5M')); $cache->save($item); $clock->setTo($clock->now()->add(new DateInterval('PT2M'))); assert($cache->getItem('key')->isHit() === true); $clock->setTo($clock->now()->add(new DateInterval('PT5M'))); assert($cache->getItem('key')->isHit() === false); ``` ## Running tests ```shell composer test ``` ## License This project is published under the [MIT License](LICENSE).
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