Claim
Investigated a production reliability incident, traced it to unbounded outbox retries and session advisory locks behind PgBouncer transaction pooling, bounded the retries in 11 of 13 event publishers and began replacing the locks.
Status
- implemented
- Capped at Implemented: the code, tests and records are private, so this is self-reported and cannot be verified publicly.
- production
- Real users or traffic: employment history, or a project with real usage.
- employment
- Real work for an employer, sanitized. Source code is proprietary.
Source
Company work. The source code and internal records belong to the company and cannot be published; any figures shown are sanitized. So this claim is self-reported: it stops at Implemented and links to no artifacts.
Limitations
- LIMITThe write-up is sanitized; the internal root-cause report is not published.
- LIMITWhen my work ended, the pooler-safe lock had replaced the old locks in one service; four others still used them.
- LIMITMost connection resets in the incident window could not be attributed with the logging in place.
- Internal report and data: private.
Related claims
Implemented·environment:ProductionSelf-reported · private source
Built the event backbone on Kafka with Avro schemas in a Schema Registry and a transactional outbox in each service, plus idempotent order placement and dead-letter handling.
Backend·Employment · no public artifactsEvidence →