The Java cold starts issue was severe enough that we rewrote our entire app in Go and Python (for the API bits that are not yet supported in Go). GAE/Java worked well when we started with it, then the instance cold start issue appeared and that was a deal breaker. Let me tell you how awesome it was to demo the application to VC's and have the REST requests take 20 seconds each because GAE thinks that cycling instances on and off is the right thing to do. It nearly ruined us.
Now that we are on Go, REST calls to cold instances take 100ms to complete. I don't recommend that everyone port to Go. We had no choice. The GAE/Java dashboard is missing one check-box: "Never send a request to an instance that has not returned from _ah/warmup." -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
