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Notes from building AI and automation systems in production — retrieval architectures, agentic workflows, and the delivery pipelines that get them shipped.

All API Design Agentic AI Architecture Automation Azure DevOps CI/CD Cloud Distributed Systems Evaluation Governance LLM Prompt Engineering RAG Rate Limiting Redis 1 post

Rate limiter policy engine sitting at an API gateway: incoming requests pass through authentication, an IP allow-list and a hybrid rate limiter before a decision engine returns either a 200 OK or a 429 Too Many Requests with a Retry-After value.

Systems Design 10 min read

Rate limiting at scale: an architecture, not an algorithm

A production rate limiter is not a counter bolted onto an endpoint. It is a distributed admission-control system that has to be accurate, fast, synchronized and honest with the clients it throttles.

22 Aug 2026 Read