Update website

vendor/doctrine/cache/UPGRADE-1.11.md

@@ -0,0 +1,27 @@
+# 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
+```