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Apr 29, 2020 · Databases

Optimizing Write Hotspots in TiDB: Architecture Overview, Problem Analysis, and Solution

This article details a real‑world case of write‑hotspot performance degradation in a TiDB 3.0.9 cluster, explains TiDB’s architecture, analyzes monitoring data and hot‑region tables, and presents a redesign using varchar primary keys and SHARD_ROW_ID_BITS to disperse writes and dramatically improve latency.