Craig Ringer 15b68e989c Refer to staleness in instant vector documentation
The instant vector documentation does not explain which metric samples are selected - in particular, it makes no reference to staleness.

It's confusing when reading the docs to understand how exactly Prometheus selects the metrics to report: the most recent sample older than the search timestamp specified in the API request, so long as that metric is not "stale".

Signed-off-by: Craig Ringer <craig.ringer@enterprisedb.com>
2024-09-26 11:54:31 +12:00
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