MTAR T3D Sessions: Why XIDs Are Still a Problem in Postgres

More than a refresh: Conversations with the most interesting people you've never met · May 19, 2026 · 11m

In this Postgres Pet Peeves episode, Justin Graf and JD take on a long-standing issue in PostgreSQL: transaction IDs (XIDs) and what happens when they wrap around. Despite years of improvements, the system still relies on a 32-bit design that forces ongoing maintenance in high-volume databases.

This short session offers a practical look at why XIDs still matter and how they continue to shape performance and operations in modern Postgres environments.