Pavel Luzanov: PostgreSQL 19: part 5.1 (QPT) or CommitFest 2026-03
We’re wrapping up our series of articles reviewing the changes in PostgreSQL 19.
Executive Summary
We’re wrapping up our series of articles reviewing the changes in PostgreSQL 19. The previous articles covered the first four CommitFests: 2025-07 , 2025-09 , 2025-11 , 2026-01 . Today we begin our review of the March 2026 CommitFest . As in previous years, the March review is going to be a long one: the final CommitFest of the cycle is where many of the most important changes land.
Database Engine & Storage Subsystem Architecture
From an OLTP/OLAP systems architecture, storage tiering, and data durability perspective: - **Zero-Vendor Lock-in Formats:** Leveraging open specifications (e.g. Parquet, Iceberg) ensures multi-engine interoperability without ingestion lock-in. - **Vector & In-Memory Throughput:** Modern memory layouts and SIMD-accelerated execution pipelines minimize latency in real-time retrieval. - **Distributed Resiliency:** Decoupled storage and compute layers enable elastic horizontal scaling with strict ACID guarantees.
Impact on the Open Ecosystem
Empowers data engineers with open, self-hosted alternatives to monopolistic cloud database providers.