An introduction to query planners and how they work

What is a query planner?

How Vitess handles complex grouping and aggregation operations

Grouping and aggregations on Vitess

The reasoning behind creating a new query planner for Vitess

How to analyze and understand query execution plans

Using code generation to improve performance and maintainability

How to write nice code, and eat the cake too

What happens when you issue a query to a vtgate?

How to split database shards while maintaining consistency