Notes on Idempotency
The property that makes retries safe is also the property that makes systems boring in the best way — and boring is the goal.
Deep-dives on architecture, AWS, and the tools I build — plus shorter notes on whatever I'm chewing on. Now self-hosted, on purpose.
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A Static Blog for a Dollar a Month
S3, CloudFront and nothing else. Here is the exact stack, the parts that are easy to get wrong, and the bill to prove it is actually cheap.
Why I'm Leaving Medium
A paywall, an algorithm, and someone else's roadmap were never really mine to begin with. What finally pushed me to self-host.
A Small Caching Layer for a Slow API
One upstream call was taking 900ms and getting hit on every page load. Forty lines of cache took p95 latency from 910ms to 4ms.