问题
I am new to prometheus and grafana...
My primary goal is to get the response time per request.
For me it seemed to be a simple thing - but whatever I do I do not get the results I require.
I need to be able to analyse the service lateny in the last minutes/hours/days. The current implementation I found was a simple SUMMARY (without definition of quantiles) which is scraped every 15s.
- Is it possible to get the average request latency of the last minute from my prometheus SUMMARY?
- If YES: How? If NO: What should I do?
Currently I am using the following query:
rate(http_response_time_sum{application="myapp",handler="myHandler", status="200"}[1m])
/
rate(http_response_time_count{application="myapp",handler="myHandler", status="200"}[1m])
I am getting two "datasets". The value of the first is "NaN". I suppose this is the result from adivision by zero.
THX in advance!
(using spring-client)
回答1:
Your query is correct. The result will be NaN if there have been no queries in the past minute.
来源：https://stackoverflow.com/questions/47305424/measure-service-latency-with-prometheus