If you're considering the "sidecar exporter" approach, then also look at statsd_exporter <https://github.com/prometheus/statsd_exporter> (maintained in Prometheus org), and use a simple statsd client to fire updates to it.
In general, I'd say that the ideal approach is to instrument your application directly: it will have direct access to application state on every scrape. However if your application is deployed as multiple processes, then having a sidecar might make things simpler: otherwise, as you've already noted, you need to access shared state in files or redis etc. *"Doesn't seem to have many community collectors built on top"* may simply reflect that ruby isn't the go-to language for writing low-level collectors. The go-to language is go :-) On Wednesday, 4 August 2021 at 23:22:41 UTC+1 [email protected] wrote: > > Hello, > > Want to add Prometheus metric to a few Rails applications. I'm having a > hard time choosing between the two primary client libraries. I'm looking > for thoughts from other folks. > > > > prometheus/client_ruby <https://github.com/prometheus/client_ruby> VS > discourse/prometheus_exporter > <https://github.com/discourse/prometheus_exporter> > > > Here's my current assessment: > > *client_ruby* > + maintained in Prometheus org > + doesn't require running a sidecar process > ? handles multi-process using files > - doesn't come with many collectors > ? doesn't seem to have many community collectors built on top > + more mature project > > *prometheus_eporter* > + has lots of useful built-in collectors > ? handles multi-process using a sidecar process with streaming JSON. > Basically a PushGateway > - completely incompatible with client_ruby > - younger project > > Any thoughts or suggestions are much appreciated! > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/39c1bd76-960e-46ff-a9e6-c9887419faa7n%40googlegroups.com.
