Ray's Galactic Tech

Jan 25, 2026 · Operations

Why Redis High Availability Fails: Split‑Brain and Replication Storm Explained

The article examines the two most dangerous production failures in Redis high‑availability—split‑brain and replication storm—explaining their causes, real‑world impact, and practical engineering safeguards such as write‑protection parameters, network isolation, backlog sizing, and cascading replication.