kriswallsmith/assetic — pull request #317 by xzyfer (2012-10-23 05:15:53+00:00)
Title: Add a non-persistant asset cache

This pull request adds a non-persistent asset cache backed by php arrays.

### why?

There are times when you don't want to persist a cache. When a function is expected to return cache object but you don't want the cache to be persisted, you don't want to have to type check the returned object.

### use case?

We use this in AsseticBundle when working with Zurb's Foundation and Twitter's Bootstrap. We need this because the default filesystem cache relies on a file's last modified time. We using sass you'll often have an `app.scss` that just includes other sass files. You would then only link the `app.scss` in your document through assetic. This causes the filesystem cache to never bust because the `app.scss` file itself never changes.