Expvar support?

[mperham]

Go provides a way to track and publish built-in memory metrics in the expvar package. Since this is the official way to do it, would InfluxDB consider enabling it so visualization tools like Inspeqtor Pro can provide realtime dashboards for this data? I'd love to see this automatically supported for InfluxDB:

[otoolep]

I agree that we need to do something like this. Having a system that is itself easy to monitor and manage is very important to me (and the team). I'll make sure the implementation for 0.9.0 meets this need. Since we prefer to use standard packages over third-party packages, expvar is an obvious choice for much of this work.

[Dieterbe]

FWIW a lot of discussion around instrumentation happened in #635
I think one of the takeaways from there was that exposing variables (i.e. expvar) is not enough, a package such as go-metrics can be very useful to compute summary statistics (such as mean/max/percentiles of durations, etc)

[pauldix]

Closing this since it's covered by #1936, which will be in soon.