UPGRADE-1.11.md
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UPGRADE-1.11.md
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	# Upgrade to 1.11

	doctrine/cache will no longer be maintained and all cache implementations have
	been marked as deprecated. These implementations will be removed in 2.0, which
	will only contain interfaces to provide a lightweight package for backward
	compatibility.

	There are two new classes to use in the `Doctrine\Common\Cache\Psr6` namespace:
	* The `CacheAdapter` class allows using any Doctrine Cache as PSR-6 cache. This
	is useful to provide a forward compatibility layer in libraries that accept
	Doctrine cache implementations and switch to PSR-6.
	* The `DoctrineProvider` class allows using any PSR-6 cache as Doctrine cache.
	This implementation is designed for libraries that leak the cache and want to
	switch to allowing PSR-6 implementations. This class is design to be used
	during the transition phase of sunsetting doctrine/cache support.

	A full example to setup a filesystem based PSR-6 cache with symfony/cache
	using the `DoctrineProvider` to convert back to Doctrine's `Cache` interface:

	```php
	use Doctrine\Common\Cache\Psr6\DoctrineProvider;
	use Symfony\Component\Cache\Adapter\FilesystemAdapter;

	$cachePool = new FilesystemAdapter();
	$cache = DoctrineProvider::wrap($cachePool);
	// $cache instanceof \Doctrine\Common\Cache\Cache
	```