You definately have to INCREASE latency to reduce costs. As far as I understood, the sliders work like this: min latency: once it is reached (=a request waits in queue for that time), app engine might start another instance (I don't know on what it bases the decision whether to actually do it) max latency: once it is reached, app engine ALWAYS starts a new instance.
There are no free instances, at least not directly. Since you have 28 free instance hours per day, you can run one instance for free during all of the day though, and another one for a few hours. Or you can run 14 instances for 2 hours. If you exceed the daily 28h-limit on a regular basis, you should absolutely get discounted instance hours since they are 0.5$ instead of 0.8$ (0.25 instead of 0.4 right now). You have to calculate the cost of each unused discounted instance hour as 0.5$ and the cost of each full-price instance hour (which could have been a discounted unit) as 0.3$. Or in other words: It is better to buy 10 discounted hours too much than buying 20 too little. This is my personal understanding of the matter. If I am wrong, please correct me. -- 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/-/dVLQ2iGxuaEJ. 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.
