#node-js

#node-js2

• 

  Reliability 2026-05-17

  [Messenger Load-Testing, Part 3] FCM to a Queue, Swallowed Failures to Sentry — Cleaning Up the Message-Send Handler

  Isolating external I/O and surfacing swallowed errors

  • #fcm
  • #bullmq
  • #sentry
• 

  Reliability 2026-05-11

  [Messenger Load-Testing, Part 2] There Was a Deadlock Hiding in AI-Generated Code — How We Replaced `unreadCount` with `lastReadAt`

  42.8% errors in 9 minutes, caused by one updateMany

  • #postgresql
  • #prisma
  • #databases