Engineering blog

Notes from the edge of scale

Deep-dives on rate limiting, load shedding, performance, and keeping APIs fast under pressure.

Architecture Medium

Why you shouldn’t use Redis as a rate limiter: Part 1 of 2

A tour of the common Redis-based rate limiter implementations — and the correctness and performance traps each one hides.

Reliability Substack

The myth of infinite serverless scale — why adding machines doesn’t fix overload, and what to do instead.

Occasional, practical writing on building systems that stay fast under load.