Matthew Setter has a new post today on the "Master Zend Framework" site looking at the use of caching for Zend Framework 2 module configurations.

For the longest time, I’ve been using closures in my Zend Framework 2 Modules Module class. I know they’re not always the best approach, but they’re not necessarily wrong either.

But after reviewing Gary Hockin’s recent talk at PHP Conference UK, I was reminded that outside of APC and OPCache, closures aren’t cacheable. [...] So in today’s tutorial, I’m going to show you a simple example of how to migrate from closures using [caching with Memcached, Redis and so on].

He starts with an example of the standard closure approach, returning an array from his "getServiceConfig" method with sub-array and object creation nested inside. He then refactors it to use the "FactoryInterface" to handle the configuration setup for the "delete form" handling.