MySQL Router | BestHub

Aikesheng Open Source Community

Mar 31, 2025 · Databases

Smarter Query Routing with MySQL Routing Guidelines

The article explains how MySQL Shell and MySQL Router 9.2 introduce Routing Guidelines, a declarative, context‑aware query routing feature that lets administrators define fine‑grained rules based on server roles, session attributes, and network information to improve latency, load‑balancing, and fault‑tolerance in complex MySQL topologies.

AdminAPIDatabase ArchitectureMySQL

0 likes · 14 min read

Smarter Query Routing with MySQL Routing Guidelines

Aikesheng Open Source Community

Aug 28, 2023 · Databases

MySQL InnoDB Cluster Read Replicas: Adding, Configuring, and Managing Read‑Only Nodes

This article explains how MySQL InnoDB Cluster 8.1 introduces read‑only replica instances, shows step‑by‑step commands to create and configure them, describes their failover behavior, routing options with MySQL Router, health‑check isolation, replication‑lag handling, and how to hide replicas from traffic.

DatabaseHigh AvailabilityInnoDB Cluster

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MySQL InnoDB Cluster Read Replicas: Adding, Configuring, and Managing Read‑Only Nodes

Aikesheng Open Source Community

Aug 4, 2022 · Databases

Analysis of MySQL Router “Too Many Connections” Error in Versions 8.0.29/8.0.30 and Work‑around

The article investigates why MySQL Router 8.0.29/8.0.30 reports “ERROR 1040 (HY000): Too many connections to MySQL Router” even when the backend MySQL server has only a few connections, reproduces the issue, analyzes packet traces, and concludes that the problem exists in those versions but not in 8.0.28 or 8.0.21, likely due to a new connection‑pooling feature.

MySQLMySQL RouterTCP connection

0 likes · 7 min read

Analysis of MySQL Router “Too Many Connections” Error in Versions 8.0.29/8.0.30 and Work‑around