Programmer Xu Shu

Apr 21, 2025 · Databases

Why Is Redis So Fast? Inside the Secrets of Its High‑Performance Design

In this interview-style article, the interviewer probes a candidate on why Redis is exceptionally fast, covering its in‑memory storage, single‑threaded design, I/O multiplexing, optimized data structures, memory management tricks, and practical performance‑tuning strategies.