Finding and fixing a node-postgres connection leak
node-postgres (pg)revision 1
Diagnostic tree
In progressThe pool exhausts gradually under sustained normal trafficUnlike a startup burst, this climbs steadily over time under otherwise ordinary load and doesn't recover on its own.
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Watch the pool counters over time, not just once
idleCount stays at 0 and totalCount never drops — a leak, not a burst
Doesn't match the leak signature
Wrap every manual checkout in try/finally
Re-run the same sustained load and check the counters stay bounded
Resolved
Search for other manual .connect() call sites
What to test
The pool exhausts gradually under sustained normal traffic
Unlike a startup burst, this climbs steadily over time under otherwise ordinary load and doesn't recover on its own.