Have you got 'warmup requests' enabled in your app.yaml config file? See http://code.google.com/appengine/docs/python/config/appconfig.html#Inbound_Services
How long does it take for an instance to load? You will find the times (ms) in your log, search for Info message with "This request caused a new process to be started..." Perhaps you could speed up instance load times by reducing the amount of precaching each instance does. Regards Dale On Feb 9, 10:44 am, Henric Persson <henric.pers...@kanal5.se> wrote: > Last night we had a sudden traffic spike at 21:00 (CET). Requests were at a > steady 40 req/s when we suddenly had more than 400 req/s. This led to our > application being almost entirely down for about 10-15 minutes. I think that > it’s because many new app instances are being fired up at the same time. Is > there anything we can do to “prime” our application to handle these > situations in a better way? Could it be that our application takes too long > to start up? > > Here's a graph showing number of requests/s > > <https://lh5.googleusercontent.com/_4q0OeYdmoDA/TVJS02W3LgI/AAAAAAAAAA...> > > And here are all the errors/s > > <https://lh5.googleusercontent.com/_4q0OeYdmoDA/TVJTYJKeEtI/AAAAAAAAAB...> > > Any ideas to how we can handle these situations? Tell people not to enter > our website? ;) > > /Henric -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
