Long TTFB for App Engine Flexible

[fschirl]

Hi all,
I don't know if the Issue is correct here.

I do have problems with GCP App Engine Flexible (without any special nginx.conf). Although the App Engine is auto-scaling I do have randomly (1 out of 10) request having a very long connection / TTFB time.

Debugging is telling me, that the app code itself is performing very well (< 100ms) but TTFB is taking up to > 1s.

Is there any way to optimize this, or what could be the issue?

[derekherman]

I've been seeing like 500-800ms TTFB, as well. I'm considering moving as this is causing issues with our CWV. Also, not seeing a response to this from Google is a bit concerning.