diaosj opened a new issue #3917: URL: https://github.com/apache/apisix/issues/3917
### Issue description I noticed this message in `logs/error.log`: ``` 2021/03/26 14:37:26 [error] 38#38: *130656606 [lua] prometheus.lua:732: log_error(): Unexpected error adding a key: no memory while logging request ``` I guess the memory for Prometheus metrics has an upbound limit. What is that value? I may need to config more memory for APISIX. ### Environment * apisix version (cmd: `apisix version`): 2.1 * OS (cmd: `uname -a`): Linux * OpenResty / Nginx version (cmd: `nginx -V` or `openresty -V`): openresty/1.19.3.1 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
