3 ## Minor BC Break: `Doctrine\Common\Cache\FileCache#$extension` is now `private`.
5 If you need to override the value of `Doctrine\Common\Cache\FileCache#$extension`, then use the
6 second parameter of `Doctrine\Common\Cache\FileCache#__construct()` instead of overriding
7 the property in your own implementation.
9 ## Minor BC Break: file based caches paths changed
11 `Doctrine\Common\Cache\FileCache`, `Doctrine\Common\Cache\PhpFileCache` and
12 `Doctrine\Common\Cache\FilesystemCache` are using a different cache paths structure.
14 If you rely on warmed up caches for deployments, consider that caches generated
15 with `doctrine/cache` `<1.4` are not compatible with the new directory structure,