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#error-handling

2 stories

Banner: a catch-all exception handler hiding a failing sync job

Programming Languages Bug Report

A catch-all exception handler reported a CRM sync as successful for five weeks

Leila Farahani · Nov 12, 2026 · 7 min read

Every night our job synced new customers to the CRM and logged success. For five weeks, none had actually arrived. A broad except clause turned an expired API credential into a warning nobody saw. How we found it, the error taxonomy we adopted, and why handled errors need alerts too.

Banner: Node.js worker crashed on an unhandled promise rejection from one fire-and-forget call

Programming Languages Bug Report

Node.js worker crashed on an unhandled promise rejection: one fire-and-forget call took it down

Lucas Moreau · Aug 24, 2025 · 7 min read

A Node.js queue worker restarted a few times a day, dropping in-flight jobs. An analytics call was started without await or catch; when the analytics service failed, the rejection was unhandled and Node.js terminated the process, as it does by default since version 15. How we fixed it.