Yes, we only use this encoding when it brings benifits. `wire format` is a good term to describe such cases, which the context are constrained to current messag

Yes, we only use this encoding when it brings benifits. `wire format` is a good term to describe such cases, which the context are constrained to current message only. So the data for compression are small, and many statistical methods won't work since it's a `wire format`. The stats itself must be send to peers, which will have bigger space and cpu cost