As Jeff mentioned, when you are already receiving traffic, App Engine will perform automatic scaling to meet the requirements of your traffic to reduce user-facing cold starts. So setting up an automated system to change your instance count would be competing with automatic scaling, and it is better to just let App Engine take over instead.
Setting the min instance count is more ideal before traffic comes in, or before a major traffic spike, since spikes are very hard to predict, and App Engine becomes reactive scaling up after the spike occurs if it doesn't have enough instances. Therefore you can indeed created an automated script that preemptively increase your min instance count before known traffic spikes occur, but should then let App Engine take over once traffic is already flowing. -- 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 https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/bb596947-32da-4567-8b6e-89f520fe9890%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
