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authorRichard van der Hoff <1389908+richvdh@users.noreply.github.com>2021-03-04 16:40:18 +0000
committerGitHub <noreply@github.com>2021-03-04 16:40:18 +0000
commit8a4b3738f3dcf49f70c08204ad457559dcef4112 (patch)
tree8bd53704eba5445498760f74a20538fa90352ef3 /changelog.d/9540.removal
parentPrometheus metrics for logins and registrations (#9511) (diff)
downloadsynapse-8a4b3738f3dcf49f70c08204ad457559dcef4112.tar.xz
Replace `last_*_pdu_age` metrics with timestamps (#9540)
Following the advice at
https://prometheus.io/docs/practices/instrumentation/#timestamps-not-time-since,
it's preferable to export unix timestamps, not ages.

There doesn't seem to be any particular naming convention for timestamp
metrics.
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+The `synapse_federation_last_sent_pdu_age` and `synapse_federation_last_received_pdu_age` prometheus metrics have been removed. They are replaced by `synapse_federation_last_sent_pdu_time` and `synapse_federation_last_received_pdu_time`.