Posts

All the articles I've posted.

• We moved our page cache to R2, then deleted it

  14 May, 2026·4 min read

  R2 charges 12.5 times more for a write than a read. Rendered HTML that revalidates on a timer is the worst workload for that pricing, and images are the best.

• Your error handler is inside the cache

  23 Apr, 2026·3 min read

  A thirty-second backend restart became an hour of 404s, because a try/catch inside a "use cache" function cached the failure as a value.

• Keep the model call off the request path

  4 Apr, 2026·3 min read

  A per-instance throttle limited nothing and blocked the job meant to recover from quota exhaustion. Removing the request path's ability to generate fixed both.

• Idempotent writes don't make side effects idempotent

  19 Mar, 2026·4 min read

  Making an offline-first upsert safe to replay took an afternoon. The streak, points, awards and celebration it triggers each needed their own guard.