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Sep 21, 2024 · Databases

Root Cause Analysis of a Redis Cluster Slot‑Migration Failure and Gossip‑Protocol Inconsistencies

This article analyzes a Redis cluster outage caused by a slot‑migration bug where a node simultaneously migrated slots in and out, leading to conflicting config epochs, gossip‑protocol mismatches, and MOVED errors, and provides detailed troubleshooting steps and preventive measures.