6704e17afd
Firstly, we're now explicitly instructing the comments service to not return thread responses/comments if the request isn't AJAX. So, if you load the URL for a single discussion thread in your browser, this would be a non-AJAX call and we'll avoid loading the responses for the entire thread behind-the-scenes. Big win here for large threads. Next, we removed a redundant "get threads" call which was also happening behind-the-scenes. This call was redundant as the front-end JS also grabs the thread list when a topic is chosen, so we were making an extranenous call for no benefit. Poof, gone! Finally, we added some caching of database queries that are required to drive a lot of the permissions/cohorts machinery around discussion. This will have a minimal effect but introduced a cleaner way to apply general memoization at the per-request level which will let us further cache things as we identify them as issues.
Open edX -------- This is the root package for Open edX. The intent is that all importable code from Open edX will eventually live here, including the code in the lms, cms, and common directories. If you're adding a new Django app, place it in core/djangoapps. If you're adding utilities that require Django, place them in core/djangolib. If you're adding code that defines no Django models or views of its own but is widely useful, put it in core/lib. Note: All new code should be created in this package, and the legacy code will be moved here gradually. For now the code is not structured like this, and hence legacy code will continue to live in a number of different packages.