Routing Sharded Queries Through Vitess vtgate Without Rewriting Your App
How Vitess vtgate routes queries to the correct MySQL shard, how to use hints when the sharding key is missing, and how to verify routing with /debug/route.
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vitessDiagnosing Vitess VTGate Routing Failures by Keyspace and Shard
Application queries intermittently fail with VTGate routing errors like unknown keyspace or no healthy tablet? This guide walks through ordered checks, cause tables, and fixes tied to findings.
How VTGate Routes Queries Using Vitess Keyspace Topology
Learn how VTGate uses a cached keyspace topology to route SQL to the correct Vitess tablet, with a concrete configuration example, limits, common pitfalls and verification steps.
Diagnosing Vitess Query Routing Failures: 'No Tablets Available'
Learn how to diagnose and fix 'No tablets available' errors in Vitess by validating topology state, clearing vtgate caches, and verifying shard mappings.
Diagnosing Vitess 'No Healthy Tablet Available' Errors from vtgate
A diagnostic guide for Vitess 'no healthy tablet available' errors: how to tell real tablet failures from stale discovery and planned reparent windows, with ordered checks and fixes.
vtgate Connection Pool Limits Across MySQL Users
vtgate Global Connection Pool Enforcement In Vitess, vtgate acts as the primary query router distributing traffic across shards through vtctl-managed topology. The connection pooling mechanism in vtgate enforces limits globally across all MySQL users rather than per-user quotas. This behavior stems from the current implementation where -pool_timeout and -que