Fact 3
The metrics pipeline migration cutover order is now fixed as ingest-edge first because it has the lowest blast radius, metrics-router second, and shard-keeper last because its long-tail cardinality logic gets complicated.
Source evidence (1)
000007Mar 7, 2023 / 10:00 UTC-05:00
just got off w Hema + Nadia. order is fixed now: ingest-edge first -- lowest blast radius, then metrics-router, shard-keeper last bc that's where the long-tail cardinality logic gets weird. Hema's basically tracking it at the manager level, not trying to run it day to day. Nadia had one real ask: keep label names parity on the dashboards during cutover so alert defs don't turn into a cleanup project at the same time. fine w that. shard-keeper itself hasn't started yet anyway, which honestly makes the ordering easier
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