Postgres Sort Instability? | Scaling Postgres 322

In this episode of Scaling Postgres, we discuss an incremental sort instability issue with the Postgres planner, whether we should use foreign keys, how the visibility map works and how to vacuum the template0 database. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/322-postgres-sort-instability/ Want to learn more about Postgres performance? Join my FREE training called Postgres Performance Demystified here: https://www.scalingpostgres.com/courses/postgres-performance-demystified/  

In this episode of Scaling Postgres, we discuss the shutdown of Ottertune, how schema changes cause locks and how to avoid them, the benefits of on conflic do nothing, and pgvectorscale. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/321-ottertune-is-dead/ Want to learn more about Postgres performance? Join my FREE training called Postgres Performance Demystified here: https://www.scalingpostgres.com/courses/postgres-performance-demystified/

In this episode of Scaling Postgres, we discuss three organizations scaling their databases to 100 TB and beyond, collation speed, configuring memory and new AI extensions To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/320-100tb-and-beyond/ Want to learn more about Postgres performance? Join my FREE training called Postgres Performance Demystified here: https://www.scalingpostgres.com/courses/postgres-performance-demystified/    

In this episode of Scaling Postgres, we discuss a time when Postgres development stopped, two new extensions pg_lakehouse & pg_compare and the upcoming event Posette. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/319-when-postgres-development-stoppped/  

In this episode of Scaling Postgres, we discuss all the new features in Postgres 17 Beta 1, some features that did not make it, database collations & sorting and causes of slow commits. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/318-postgres-17-beta-1-released/  

In this episode of Scaling Postgres, we discuss a new time-series open source extension called pg_timeseries, Postgres ignoring indexes, JSONB selectivity issues, and geographically distributed multi-tenant applications. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/317-time-series-open-source-extension/  

In this episode of Scaling Postgres, we discuss new Postgres releases, optimizing a query to be 1,000 times faster, custom vs. generic plans and the pgtt extension. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/316-new-releases-1000-times-faster-query/  

In this episode of Scaling Postgres, we discuss how hacking on Postgres is hard, a notifier pattern for using Listen/Notify, using histograms for metrics and saturated arithmetic. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/315-hacking-on-postgres-is-hard/  

In this episode of Scaling Postgres, we discuss performance improvements for pgvector 0.7.0, a guide to vector embeddings, building a Retrieval Augmented Generation app and only allow logins to replicas. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/314-150-times-faster-pgvector/  

In this episode of Scaling Postgres, we discuss whether the future of MySQL is Postgres, how to use recursive CTEs, work on OrioleDB, and PG17 performance improvements. To get the show notes as well as get notified of new episodes, visit:  https://www.scalingpostgres.com/episodes/313-the-future-of-mysql-is-postgres/