TYPO3 Core

Steps to reproduce:

• rm -rf typo3temp/Cache/
• do a (e.g. FE-) request to populate caches
• rm typo3temp/Cache/Data/cache_classes/psr_log_loggerinterface

After that you get a fatal error for every request.

This is the case because autoload registry and aliases only populate this cache if the package states change.
Having a volatile cache for cache_classes (like memcache or APC) will sooner or later lead to a fatal error, which is not acceptable.

Idea: Introduce a two level cache for cache_classes that has persistent (file) second level cache and a potentially volatile and fast first level cache.