Chris@0: # Upgrade to 1.4
Chris@0: 
Chris@0: ## Minor BC Break: `Doctrine\Common\Cache\FileCache#$extension` is now `private`.
Chris@0: 
Chris@0: If you need to override the value of `Doctrine\Common\Cache\FileCache#$extension`, then use the
Chris@0: second parameter of `Doctrine\Common\Cache\FileCache#__construct()` instead of overriding
Chris@0: the property in your own implementation.
Chris@0: 
Chris@0: ## Minor BC Break: file based caches paths changed
Chris@0: 
Chris@0: `Doctrine\Common\Cache\FileCache`, `Doctrine\Common\Cache\PhpFileCache` and
Chris@0: `Doctrine\Common\Cache\FilesystemCache` are using a different cache paths structure.
Chris@0: 
Chris@0: If you rely on warmed up caches for deployments, consider that caches generated
Chris@0: with `doctrine/cache` `<1.4` are not compatible with the new directory structure,
Chris@0: and will be ignored.