19min chapter

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102 Query optimization

Postgres FM

CHAPTER

Query Optimization and its Impact on Other Queries

This chapter explores the potential impact of query optimization on other queries in a production environment. It discusses cases where optimizing an index led to worse execution for all updates and emphasizes the need to test changes holistically. The chapter also highlights the challenges of measuring and improving query performance and the importance of developing tooling for proactive testing and regression testing.

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