ChrisMH/cassette — comment on commit 14c0ae66ba1ab22460bd60b86b0f6309b3b5149b
File:  line 0
By andrewdavey:

I'm concerned about how a single PlaceholderTracker object is getting called by multiple threads. One tracker should be created for each HTTP request, and I assumed the page rendering and subsequent replacing code is single threaded. Perhaps something is going wrong with the code elsewhere?