Writing
Essays on payment rails, evaluation harnesses and the unglamorous infrastructure that keeps AI products honest.
How do you stop an AI from making things up? RAG Basics
RAG Systems, Explained Like You’re 7
What actually breaks in a RAG system
Examines structural failures in retrieval-augmented generation systems with fixes from real world examples
240 views
Your rate limiter says 100 req/s. Your users get 400.
Explains how in-process and Redis-backed rate limiters differ and why per-instance limits multiply when scaling horizontally.
120 views
Why Your Payment Endpoint Charged Someone Twice
A customer was charged twice for a single payment, but logs showed only one POST request.
320 views
Evaluating LLMs the way you evaluate engineers
Benchmarks measure recall. Rubrics measure judgement. Frontier work needs the second one.
628k views
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