EP220: RAG vs Graph RAG vs Agentic RAG

A system design newsletter covering five topics: a comparison of Standard RAG, Graph RAG, and Agentic RAG (their mechanics, trade-offs, and when to use each); an overview of Redis 8 data structures including Strings, Hashes, Lists, Sets, Sorted Sets, Streams, JSON, Geospatial, Vector Set, and Time Series; API security best practices covering OAuth/OIDC, authorization, rate limiting, and more; a design patterns cheat sheet; and an explanation of the Testing Pyramid with unit, integration, and E2E layers.