Postgres FM

Nikolay Samokhvalov and Michael Christofides
  • 4.7 (22)
  • Technology
  • Updated Weekly

A weekly podcast about all things PostgreSQL

  1. 5d ago

    Citus + StackGres

    Nik and Michael are joined by Álvaro Hernández to discuss sharding Postgres with Citus and StackGres, especially the new query router support that has been added very recently. Here are some links to things they mentioned:  Álvaro Hernández https://postgres.fm/people/alvaro-hernandez-tortosaOngres https://ongres.comScaling Citus without limits: announcing Query Routers in StackGres https://stackgres.io/blog/scaling-citus-beyond-one-coordinator-announcing-query-routers-stackgres/Open-source Citus matches PlanetScale's Neki at 10M QPS on half the data nodes https://stackgres.io/blog/open-source-citus-matches-planetscales-neki-at-10m-qps-on-half-the-data-nodes/Postgres TV discussion about licenses with Álvaro https://www.youtube.com/watch?v=1rcbyIjA4gIOur episode with Sugu from Multigres https://postgres.fm/episodes/multigresOur (first) episode with Lev from PgDog https://postgres.fm/episodes/pgdogCitus https://github.com/citusdata/citusCitus goes fully open source (2022) https://www.citusdata.com/blog/2022/06/17/citus-11-goes-fully-open-source/6M requests per second using ClickHouse (blog post by Alex Bocharov / Cloudflare) https://blog.cloudflare.com/http-analytics-for-6m-requests-per-second-using-clickhouse/pg_ash https://github.com/NikolayS/pg_ash118 million queries per second on Neki (blog post by Florent Poinsard and Hirad Pourtahmasbi / PlanetScale) https://planetscale.com/blog/118-million-queries-per-second-on-nekiAnalyzing the Limits of Connection Scalability in Postgres (blog post by Andres Freund) https://www.citusdata.com/blog/2020/10/08/analyzing-connection-scalability/ ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is produced by: Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.ai With credit to: Jessie Draws for the elephant artwork

  2. Sep 25

    GSoC B-Tree Merge

    Nik and Michael are joined by Salma El-Sayed and Kirk Wolak to discuss their in-progress and very ambitious Google Summer of Code project around adding Btree Merge support to Postgres. Here are some links to things they mentioned:  Salma El-Sayed https://postgres.fm/people/salma-el-sayedKirk Wolak https://postgres.fm/people/kirk-wolakGoogle Summer of Code https://summerofcode.withgoogle.comPostgreSQL GSoC 2026 project ideas https://wiki.postgresql.org/wiki/GSoC_2026CMU Intro to Database Systems https://www.youtube.com/playlist?list=PLSE8ODhjZXjYMAgsGH-GtY5rJYZ6zjsd5Kirk, NIK, and Andrey’s Hacking Postgres sessions on YouTube https://www.youtube.com/playlist?list=PLH8y1BNPAKjKDdJA7sDmFWUkbbYux3TRzB-tree Index Bloat Reduction - Approach & Questions (Hackers thread, with patches) https://www.postgresql.org/message-id/flat/CANBEAPFq3YAOydjUS3xwcUG9L6e3WE5Z4nGPk_Q3RsjSFWTJNA%40mail.gmail.comB-tree merge visualizer https://kirkw.github.io/explainers/btree-merge-explainer.html ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is produced by: Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.ai With credit to: Jessie Draws for the elephant artwork

  3. Sep 18

    ClickHouse Managed Postgres

    Nik and Michael are joined by Sai Srirampur to discuss ClickHouse's new managed Postgres service. Here are some links to things they mentioned:  Sai Srirampur https://postgres.fm/people/sai-srirampurClickHouse Managed Postgres https://clickhouse.com/cloud/postgresClickPipes https://clickhouse.com/cloud/clickpipeswalshadow https://github.com/ClickHouse/walshadowpg_clickhouse https://github.com/clickHouse/pg_clickhouseClickHouse PostgreSQL powered by Ubicloud https://www.ubicloud.com/blog/clickhouse-postgresql-powered-by-ubicloudHacking Postgres logical decoding sessions https://hacking.postgres.tv/topics/logical-decoding/ wal-rus https://github.com/ClickHouse/wal-ruspg_createsubscriber https://www.postgresql.org/docs/current/app-pgcreatesubscriber.html ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is produced by: Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.ai With credit to: Jessie Draws for the elephant artwork

  4. Sep 11

    hot_standby_feedback

    Nik and Michael discuss hot_standby_feedback — what it controls, whether and when read replicas should be changed to on, and other settings you can change to help too. Here are some links to things they mentioned:  hot_standby_feedback https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-HOT-STANDBY-FEEDBACKhot_standby_feedback: experiments on PostgreSQL 17 (by Nik) https://console.postgres.ai/shared/brief/6018f69d-8975-48e3-8259-a72c77105572Best practices for Amazon RDS PostgreSQL replication (blog post) https://aws.amazon.com/blogs/database/best-practices-for-amazon-rds-postgresql-replication/log_autovacuum_min_duration https://www.postgresql.org/docs/current/runtime-config-logging.html#GUC-LOG-AUTOVACUUM-MIN-DURATIONmax_standby_streaming_delay https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-MAX-STANDBY-STREAMING-DELAYWAIT FOR LSN https://www.postgresql.org/docs/19/sql-wait-for.htmltransaction_timeout https://www.postgresql.org/docs/current/runtime-config-client.html#GUC-TRANSACTION-TIMEOUTHot Standby Feedback should default to on in 9.3+ https://www.postgresql.org/message-id/flat/20121130190227.GJ3957%40awork2.anarazel.de ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is produced by: Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.ai With credit to: Jessie Draws for the elephant artwork

  5. Aug 21

    Estimating work_mem

    Nik and Michael are joined by Shaun Thomas to discuss estimating work_mem, memory management in general, and writing an extension to help. Here are some links to things they mentioned:  Shaun Thomas https://postgres.fm/people/shaun-thomaswork_mem https://www.postgresql.org/docs/current/runtime-config-resource.html#GUC-WORK-MEMpg_stat_database https://www.postgresql.org/docs/current/monitoring-stats.html#MONITORING-PG-STAT-DATABASE-VIEWALTER ROLE SET configuration_parameter https://www.postgresql.org/docs/current/sql-alterrole.html#SQL-ALTERROLE-PARAMS-CONFIGURATION-PARAMETERhash_mem_multiplier https://www.postgresql.org/docs/current/runtime-config-resource.html#GUC-HASH-MEM-MULTIPLIERRecent Postgres releases with 28 CVEs fixed https://www.postgresql.org/about/news/postgresql-186-1711-1615-1519-1424-and-19-beta-3-released-3365/Systemic Risks in the Managed PostgreSQL Industry (part 1 of 6, Mehmet Ince) https://mehmetince.net/part-1-6-systemic-risks-in-the-managed-postgresql-industry-extension-risks-are-real-exploiting-postgis-memory-corruption-bug-at-neondb-supabase-and-many-more/Improving Postgres Connection Scalability: Snapshots (blog post by Andres Freund) https://techcommunity.microsoft.com/blog/adforpostgresql/improving-postgres-connection-scalability-snapshots/1806462 ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is produced by: Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.ai With credit to: Jessie Draws for the elephant artwork

  6. Aug 14

    pgrust

    Nik and Michael are joined by Michael Malis, co-creator of pgrust, to discuss their Postgres rewrite, including reliability problems, compatibility testing, faster analytics, and a new JIT-compiled query engine. Here are some links to things they mentioned:  Michael Malis https://postgres.fm/people/michael-malispgrust https://github.com/malisper/pgrust The four horsemen behind Postgres outages (blog post by Michael Malis) https://malisper.me/the-four-horsemen-behind-thousands-of-postgres-outagesRebuilding Postgres for faster analytics: batching, operator fusion, and SIMD (blog post by Michael Malis) https://malisper.me/how-we-made-postgres-hundreds-of-times-faster-the-query-engine/kani https://github.com/model-checking/kaniAntithesis https://antithesis.comfsyncgate mailing list thread https://www.postgresql.org/message-id/flat/CAMsr%2BYHh%2B5Oq4xziwwoEfhoTZgr07vdGG%2Bhu%3D1adXx59aTeaoQ%40mail.gmail.comHow AI Changes the Economics of JIT Compilers (blog post by Michael Malis) https://malisper.me/how-ai-changes-the-economics-of-jit-compilers/Umbra DB https://umbra-db.com ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is produced by: Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.ai With credit to: Jessie Draws for the elephant artwork

  7. Aug 7

    MVCC

    Nik and Michael are joined by Radim Marek to discuss MVCC, including his recent article on how Postgres chose to implement it compared to other systems. Here are some links to things they mentioned:  Radim Marek https://postgres.fm/people/radim-marekBoringSQL https://boringsql.comPostgreSQL's MVCC is bad. So is everyone else's (blog post by Radim) https://boringsql.com/posts/mvcc-bad-bad/PostgreSQL MVCC documentation https://www.postgresql.org/docs/current/mvcc-intro.htmlPostgreSQL Storage Internals series by Radim https://boringsql.com/guides/postgresql-storage-internals/PgQue https://github.com/NikolayS/pgqueThe next ten years of Postgres (talk slides by Álvaro Herrera) https://www.postgresql.eu/events/pgconfde2026/sessions/session/7744/slides/866/edb-keynote-pgconfde-2026.pdfEpisode on RegreSQL https://postgres.fm/episodes/regresqlDryRun MCP https://github.com/boringsql/dryrun ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is produced by: Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.ai With credit to: Jessie Draws for the elephant artwork

  8. Jul 31

    Xata

    Nik and Michael are joined by Tudor Golubenco, CTO of Xata, to discuss their architecture, progress, and open source tooling. Here are some links to things they mentioned:  Tudor Golubenco https://postgres.fm/people/tudor-golubencoXata https://xata.ioXata is now open source https://xata.io/blog/xata-is-now-open-sourceDBLab Engine https://postgres.ai/docs/database-labpgstream https://github.com/xataio/pgstreamXata acquires Privacy Dynamics for advanced anonymization https://xata.io/blog/xata-acquires-privacy-dynamicsTonic AI https://www.tonic.aiA thousand Postgres branches for one dollar https://xata.io/blog/a-thousand-postgres-branches-for-1pgroll https://github.com/xataio/pgrollCloudNativePG https://github.com/cloudnative-pg/cloudnative-pgPGSimCity https://nikolays.github.io/PGSimCityDeltaX https://github.com/xataio/deltax ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is produced by: Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.ai With credit to: Jessie Draws for the elephant artwork

See All (192)

4.7
out of 5
22 Ratings

About

A weekly podcast about all things PostgreSQL

Information

  • Creator
    Nikolay Samokhvalov and Michael Christofides
  • Years Active
    2022 - 2026
  • Episodes
    192
  • Rating
    Clean
  • Copyright
    © 2026 Nikolay Samokhvalov and Michael Christofides

You Might Also Like