see https://github.com/coder/internal/issues/959 but the tl; dr is:
- we call this DB query on an interval (every 15s) and it would be
called on each coderd replica as well
- the generated values update very infrequently (for our most used
internal template I saw the builds created/claimed update twice in a 1h
period)
- we have no index on the initiator ID, so this query has to scan the
entire workspace_builds table on every request
In reality this should likely just be a Prometheus metric, and
Prometheus can handle the counter reset behaviour at query time, but for
now this should at least cut the load of the query to 25% of it's
current impact.
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Signed-off-by: Callum Styan <callumstyan@gmail.com>
Callum Styan
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