TechPlanetScaleabout 3 years ago
Optimizing query planning in Vitess: a step-by-step approach
7 min read
Vitess introduced a new query planner model where every optimization step produces a runnable plan. The approach simplifies reasoning, eases testing, and enables arbitrary expressions in ordering, grouping, and aggregations. VTGate, the proxy component, accepts queries and plans distribution across shards and keyspaces.
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