#Redis

Caching is a key system-design technique for improving performance and reducing database load by storing frequently accessed data in faster storage. These notes cover where caching fits in a system, common architectures such as cache-aside, write-through, write-behind, and read-through, eviction pol

A comprehensive guide to how API Gateways work, how they validate JWTs, and the tradeoffs behind token revocation. Table of Contents Part 1: API Gateway Fundame...