I wished Google made it clearer, but guys, please stop worrying about the Blue "Total Instances" line when it comes to billing. You are NOT charged for the Blue line, but for the YELLOW "Active Instances" line plus 1. Your actual Instance-Hour change is "Max Idle Instance plus Active Instance" (except when you have 0 instances up where you will be charged 0).
If you set Max Idle Instance to 1. Your free application should have no problem staying under the 28 Instance-Hour quota even if the scheduler decides to spawn 2-4 instances for you all day, as long as your "Active Instances" average is below 0.1666 Again, IGNORE THE BLUE LINE. Worry about keeping the YELLOW line below 0.1666 -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/FGV2F-eHOXMJ. 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.