Postgres FM

Nikolay Samokhvalov and Michael Christofides
  • 5.0 (1)
  • TECHNOLOGY
  • UPDATED WEEKLY
Postgres FM

A weekly podcast about all things PostgreSQL

  1. 6 DAYS AGO

    Append-only tables

    Nikolay and Michael discuss append-only tables in Postgres — what they are, some unique challenges they bring, and some options for compressing / removing / offloading the data eventually. Here are some links to things they mentioned: Append-only https://en.wikipedia.org/wiki/Append-onlyOur episode on BRIN indexes https://postgres.fm/episodes/brin-indexesTips to Improve Insert Performance https://www.timescale.com/blog/13-tips-to-improve-postgresql-insert-performance/ Our episode on WAL and checkpoint tuning https://postgres.fm/episodes/wal-and-checkpoint-tuningautovacuum_vacuum_insert_scale_factor https://www.postgresql.org/docs/current/runtime-config-autovacuum.html#GUC-AUTOVACUUM-VACUUM-INSERT-SCALE-FACTOR Our episode about compression https://postgres.fm/episodes/compressionNew project announced recently called BemiDB https://x.com/samokhvalov/status/1854726389603484145pg_tier https://github.com/tembo-io/pg_tier ~~~ 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 special thanks to: Jessie Draws for the elephant artwork

    44 min

  2. 8 NOV

    Denormalization

    Nikolay and Michael discuss denormalization in Postgres — when and why to denormalize things, and a couple of specific cases Nikolay came across recently.  Here are some links to things they mentioned: Denormalization https://en.wikipedia.org/wiki/DenormalizationOur episode on materialized views https://postgres.fm/episodes/materialized-viewsOur episode on data model trade-offs https://postgres.fm/episodes/data-model-trade-offsOur episode with Markus Winand https://postgres.fm/episodes/modern-sqlUniversal Relation Data Modelling Considered Harmful (blog post by Michael Stonebraker and Álvaro Hernández) https://www.enterprisedb.com/blog/universal-relation-data-modelling-considered-harmfulBoyce–Codd normal form https://en.wikipedia.org/wiki/Boyce%E2%80%93Codd_normal_formOur episode on slow count https://postgres.fm/episodes/slow-countpg_ivm https://github.com/sraoss/pg_ivmdenorm https://github.com/rivethealth/denormPostgres Materialized Views, The Timescale Way (blog post by David Kohn) https://www.timescale.com/blog/materialized-views-the-timescale-way/PgQ https://github.com/pgq/pgqDatabases, types, and the relational model (by C.J. Date and Hugh Darwen) https://www.dcs.warwick.ac.uk/~hugh/TTM/DTATRM.pdf ~~~ 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 special thanks to: Jessie Draws for the elephant artwork

    35 min

  3. 1 NOV

    Postgres online communities

    Nikolay and Michael discuss online Postgres communities — the ones they prefer, the types of conversations in each, and some other places to ask questions or follow news.  Here are some links to things they mentioned: https://www.postgresql.org/communityMailing lists https://www.postgresql.org/listIRC https://www.postgresql.org/community/ircSlack https://pgtreats.info/slack-inviteStack Overflow https://stackoverflow.com/questions/tagged/postgresDBA Stack Exchange https://dba.stackexchange.com/questions/tagged/postgresReddit https://www.reddit.com/r/PostgreSQLDiscord https://discord.gg/bW2hsax8WeHow to run ANALYZE (merge request discussion) https://gitlab.com/postgres-ai/postgresql-consulting/postgres-howtos/-/merge_requests/35This episode on YouTube https://postgresqlco.nfPlanet PostgreSQL https://planet.postgresql.orgPostgres Weekly https://postgresweekly.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 special thanks to: Jessie Draws for the elephant artwork

    38 min

  4. 25 OCT

    Advanced psql

    Nikolay and Michael discuss some cool things you can do with psql, the official CLI that ships with Postgres. Here are some links to things they mentioned: psql docs https://www.postgresql.org/docs/current/app-psql.html Our episode on psql vs GUIs https://postgres.fm/episodes/psql-vs-guispostgres_dba https://github.com/NikolayS/postgres_dbaOur episode on massive deletes https://postgres.fm/episodes/massive-deletesPostgres hacking session on \watch with limited number of loops https://www.youtube.com/watch?v=vTV8XhWf3mo pspg https://github.com/okbob/pspg Our episode on Postgres gotchas https://postgres.fm/episodes/postgres-gotchascurrent_setting() and set_config() docs https://www.postgresql.org/docs/current/functions-admin.html#FUNCTIONS-ADMIN-SETpsql tips (site by Lætitia Avrot) https://psql-tips.org ~~~ 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 special thanks to: Jessie Draws for the elephant artwork

    53 min

  5. 18 OCT

    Postgres Gotchas

    Nikolay and Michael discuss some Postgres Gotchas, things you might expect to work one way in fact working another way. Here are some links to things they mentioned: Our episode on NULLs https://postgres.fm/episodes/nulls-the-good-the-bad-the-ugly-and-the-unknownPostgres Gotchas (list by Ian Barwick) https://sql-info.de/postgresql/postgres-gotchas.htmlOur episode on slow count https://postgres.fm/episodes/slow-countDiscussion on X about major version upgrades and statistics https://x.com/samokhvalov/status/1844593601638260850Our episode on upgrades https://postgres.fm/episodes/upgradesStatistics Import and Export (commitfest entry which link to email thread) https://commitfest.postgresql.org/50/4538/vacuumdb https://www.postgresql.org/docs/current/app-vacuumdb.htmlvacuum_cost_delay https://www.postgresql.org/docs/current/runtime-config-resource.html#GUC-VACUUM-COST-DELAYZero-downtime Postgres schema migrations need lock_timeout and retries (blog post by Nikolay) https://postgres.ai/blog/20210923-zero-downtime-postgres-schema-migrations-lock-timeout-and-retriesPostgres Hacking 101: adding params, prevent_unqualified_deletes and prevent_unqualified_updates https://www.youtube.com/watch?v=samLkrC5xQA PostgREST suggestion to use pg-safeupdate https://docs.postgrest.org/en/v12/integrations/pg-safeupdate.html#pg-safeupdateDBOS (new company co-founded by Michael Stonebraker) https://www.dbos.dev ~~~ 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 special thanks to: Jessie Draws for the elephant artwork

    40 min

  6. 11 OCT

    Advanced EXPLAIN

    Nikolay and Michael discuss some more advanced topics around EXPLAIN, including some tips for complex query plans, some recent improvements, and an idea or two that might make it even better. Here are some links to things they mentioned: Michael’s solo episode on EXPLAIN basics https://postgres.fm/episodes/explainOur episode on auto_explain https://postgres.fm/episodes/auto_explainWhich cloud providers support auto_explain? (Blog post by Michael) https://www.pgmustard.com/blog/which-cloud-providers-support-auto-explainpsychopg https://www.psycopg.orgOur first episode on BUFFERS https://postgres.fm/episodes/buffers-by-defaultOur second episode on BUFFERS https://postgres.fm/episodes/buffers-ii-the-sequeltrack_io_timing https://www.postgresql.org/docs/current/runtime-config-statistics.html#GUC-TRACK-IO-TIMINGcompute_query_id https://www.postgresql.org/docs/current/runtime-config-statistics.html#GUC-COMPUTE-QUERY-ID EXPLAIN: beyond the basics (talk by Michael) https://www.youtube.com/watch?v=sGkSOvuaPs4 ~~~ 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 special thanks to: Jessie Draws for the elephant artwork

    49 min

  7. 4 OCT

    Patroni

    Michael and Nikolay are joined by Alexander Kukushkin, PostgreSQL contributor and maintainer of Patroni, to discuss all things Patroni — what it is, how it works, recent improvements, and more. Here are some links to things they mentioned: Alexander Kukushkin https://postgres.fm/people/alexander-kukushkinPatroni https://github.com/patroni/patroniSpilo https://github.com/zalando/spilo Zalando Postgres Operator https://github.com/zalando/postgres-operatorCrunchy Data Postgres Operator https://github.com/CrunchyData/postgres-operatorSplit-brain https://en.wikipedia.org/wiki/Split-brain_(computing)repmgr https://github.com/EnterpriseDB/repmgrCloudNativePG https://github.com/cloudnative-pg/cloudnative-pgPatroni release notes https://patroni.readthedocs.io/en/latest/releases.htmlCitus & Patroni talk and demo by Alexander (at Citus Con 2023) https://www.youtube.com/watch?v=Mw8O9d0ez7E ~~~ 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 special thanks to: Jessie Draws for the elephant artwork

    46 min

  8. 27 SEPT

    Postgres 17

    Nikolay and Michael discuss the fresh new Postgres 17 release! They cover several performance improvements, favourite new features, and some considerations for upgrading. Here are some links to things they mentioned: Postgres 17 release notes https://www.postgresql.org/docs/17/release-17.htmltransaction_timeout episode https://postgres.fm/episodes/transaction_timeoutVACUUM improvements discussed towards end of episode with Melanie Plageman https://postgres.fm/episodes/getting-started-with-benchmarkingB-tree improvements discussed in episdode with Peter Geoghegan https://postgres.fm/episodes/skip-scanAs Rails developers, why we are excited about PostgreSQL 17 (blog post by Benoit Tigeot) https://benoittgt.github.io/blog/postgres_17_rails/ Real World Performance Gains With Postgres 17 B-tree Bulk Scans (blog post by Brandur Leach) https://www.crunchydata.com/blog/real-world-performance-gains-with-postgres-17-btree-bulk-scansMERGE RETURNING came up towards end of episode with Haki Benita https://postgres.fm/episodes/get-or-createuuid_extract_timestamp and uuid_extract_version functions https://www.postgresql.org/docs/current/functions-uuid.htmlEpisode on UUID https://postgres.fm/episodes/uuidPartitioning by ULID https://postgres.fm/episodes/partitioning-by-ulidWhy Upgrade? (site by depesz) https://why-upgrade.depesz.comWhy we spent the last month eliminating PostgreSQL subtransactions (GitLab blog post) https://about.gitlab.com/blog/2021/09/29/why-we-spent-the-last-month-eliminating-postgresql-subtransactionsSynchronization of sequences to subscriber (patch that needs review!)  https://commitfest.postgresql.org/49/5111 ~~~ 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 special thanks to: Jessie Draws for the elephant artwork

    42 min
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About

A weekly podcast about all things PostgreSQL

Information

  • Creator
    Nikolay Samokhvalov and Michael Christofides
  • Years Active
    2022 - 2024
  • Episodes
    123
  • Rating
    Clean
  • Copyright
    © 2024 Nikolay Samokhvalov and Michael Christofides

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