INC-2026-001SEV-1Open

Checkout API returning 502

Service: checkout-serviceEnvironment: productionStarted: Jan 15, 2026, 09:23 AM

Hypothesis

Database pool exhaustion after deployment v1.8.4 caused backend restart loop and checkout 502 errors.

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Agent Timeline

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Customer Impact

Failed Checkouts

1,284

Affected Users

932

Revenue at Risk

$18,400

Platform

Mobile

Region

Southeast Asia

Communications

At 14:32 UTC, monitoring detected elevated 502 error rates on /api/checkout. Root cause has been identified as DB connection pool exhaustion triggered by deployment v1.8.4. The deployment introduced a connection leak in the checkout transaction handler. Rollback to v1.8.3 is the recommended remediation. All on-call engineers should standby for approval.