Prometheus metrics for rails request latencies
Currently the production team uses crude log parsing to generate latency measurements for api, git and web. https://performance.gitlab.net/dashboard/db/rails-latencies?refresh=5m&orgId=1
It would be much better if this was built into the product which would be a benefit for all GitLab users.
There is some existing discussion around SLOs https://gitlab.com/gitlab-org/gitlab-ee/issues/4451 that includes latencies and a query builder https://gitlab.com/gitlab-org/gitlab-ee/issues/4452 but as a start I would like it if the application made these metrics available so that we can start monitoring them.