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PostgreSQL: Tuning parameters or Tuning Queries?
DjangoCon US 2025 · November 6, 2025
PostgreSQL parameters are not a set of magic switches that make an application fast. They mainly tell PostgreSQL what resources—such as memory and CPU—it can use; in Henrietta Dombrovskaya’s example, adjusting parallel workers, work memory, and shared buffers barely improved a slow query, while adding…