Acme Labs

The challenge

Acme's own token-metering service double-counted events on retry and lost a small but steady trickle of late-arriving usage — enough to make finance distrust the numbers.

The fix

Switching ingestion to Kribana's idempotent event ledger meant retries became no-ops and events up to 72 hours late still landed in the correct billing period.

“Finance stopped asking if the usage numbers were right. That's the real win.”