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Postgres: kill long-running queries
Find anything older than five minutes, then terminate by pid:
SELECT pid, now() - query_start AS runtime, query
FROM pg_stat_activity
WHERE state = 'active' AND now() - query_start > '5 minutes';
-- then, for the offender:
SELECT pg_terminate_backend(4242);Sam Works on RDS too — you need rds_superuser.
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Incident notes — 500s on checkout
Timeline: alerts fired at 14:02, rolled back at 14:19.
Root cause was the connection pool Priya exhaustion after the deploy doubled worker count.
Action items: cap pool size per worker, Marcus add a pgbouncer alert…
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