Yes. Pretty much the only thing I really dislike about Scala is the speed of the compiler, and Heroku magnifies this about 70 times by requiring a complete rebu

Yes. Pretty much the only thing I really dislike about Scala is the speed of the compiler, and Heroku magnifies this about 70 times by requiring a complete rebuild of the slug on every push. It would be nice if it cached the build artifacts and only recompiled source files that changed - that would be a huge time saver and would mean I could deploy several times a day instead of only the one time I allow myself. Perhaps a workaround exists but I just haven't seen a way to accomplish this To be honest I love using Git push to deploy. I just wish it was faster. This doesn't really solve that problem for me - building the slug on my own machine or as part of a CI setup seems like a step back. That and Heroku's MySQL-compatible service, ClearDB, is very inconsistent, with query times for simple queries ranging from normal to a couple of seconds inexplicably.