Full-Stack Internet Architecture

Apr 27, 2021 · Databases

Why Redis Is Fast: Core Principles and Internal Data Structures

This article explains why Redis achieves extremely high performance by leveraging pure in‑memory operations, a global O(1) hash table, efficient data structures such as SDS, ziplist, quicklist and skiplist, a single‑threaded event loop with non‑blocking I/O multiplexing, and adaptive encoding strategies.