tzssangglass commented on issue #7353:
URL: https://github.com/apache/apisix/issues/7353#issuecomment-1176022509
> Etcd version 3.5.5 will fix this issue. And, I rebuilt and deployed Etcd
based on its fixed PR and tested, and it has been confirmed that this problem
can be fixed.
Thank you for your research!
> 2\. Because the APISIX Prometheus plugin will query the Modified Index of
Etcd in real time every time, the response time of the Prometheus plugin will
also increase significantly. Therefore, Prometheus will time out when fetching
metrics.
This was due to too many metrics (tens of thousands), and I had done some
optimizations to the upstream nginx-lua-prometheus, but it didn't solve the
problem completely.
ref: https://github.com/knyar/nginx-lua-prometheus/pull/139
one idea in the community now is to provide options to control the type of
metrics to reduce the total number of metrics, see:
https://github.com/apache/apisix/issues/7211#issuecomment-1165669868
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