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datomic 2025-10-02
I'm a little confused by the documentation around metrics callbacks for Datomic https://docs.datomic.com/operation/monitoring.html#custom. The docs say that you can configure a callback on either a transactor or a peer. But the https://docs.datomic.com/operation/monitoring.html#available-cloudwatch-metrics shows only transactor metrics. Are there separate peer metrics? If I configure a metrics callback on a peer, what metrics will it receive?
favila 2025-10-02T19:49:21.517289Z
pretty much anything on that list that isn't related to GC, writes (storage, index, log), or heartbeats will also be reported by the peer
1
favila 2025-10-02T19:50:08.608079Z
importantly, you will get storage and (mem/val/object)cache metrics
Got it, thanks Francis!