Like I mentioned in my OP, the white page is the result of a lingering request with no response, this much I deducted from the browser debuggers
Yet, the issue hit me when I was deep in another task, so I couldn't/didn't trace the network issue beyond the simple browser check (I regret not debugging it further when I had the issue producing) I'm 99.9% sure it's not a code issue, the app is very old and robust, the requests in question are 200-300ms In my opinion, it's either: 1) Instance issue, no instances are assigned to requests 2) Local/temporary network issue, the requests are coming from Turkey from the main ISP (1) seems more likely to me, these also happened after a deployment, and seemed to go away after another deployment, so I might have caught a better cluster during my deployments -- -- -- Actually, not reflecting on the issue, (2) seems very likely too, because regularly, all google.com services are unreachable from Turkey for 2-3 minutes, I sometimes can't reach gmail, the issue is fixes itself after 2-3 minutes -- 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/9d5483b8-2fac-4091-b063-52c1bedbd949%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
