Default configuration

Postgres FM

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תוכן מסופק על ידי Michael Christofides and Nikolay Samokhvalov. כל תוכן הפודקאסטים כולל פרקים, גרפיקה ותיאורי פודקאסטים מועלים ומסופקים ישירות על ידי Michael Christofides and Nikolay Samokhvalov או שותף פלטפורמת הפודקאסט שלהם. אם אתה מאמין שמישהו משתמש ביצירה שלך המוגנת בזכויות יוצרים ללא רשותך, אתה יכול לעקוב אחר התהליך המתואר כאן https://he.player.fm/legal.

The Sarah Fraser Show

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SISTER WIVES: The Brown Family Plans Garrison's Funeral, Gives NEW Details About His Passing. Justin Baldoni v Blake Lively UPDATES, First Pictures Of Micah Plath’s Broken Nose Have Surfaced!… 36:16

לפני 20 ימים36:16

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36:16

DANMMMMM…Have I got a show for you! First, a lot of Sister Wives tea - new rumors have surfaced Janelle Brown is leaving the show. Plus, Gabe Brown gives a life update after losing and tragically finding his brother Garrison dead. Sadly, Garrison took his own life in March 2024. Then we head over to discuss the new Welcome To Plathville tea. The first pictures of Micah Plath have surfaced after being beat up by his brother Issac and it doesn’t look good for the future of his modeling career. Lastly, we discuss the latest in the Justin Baldoni v Blake Lively case, Justin is back on social media and it was the perfect social media return. Timestamps: 00:00:00 - Open and new Sister Wives news 00:05:43 - Janelle Brown leaving the show? Sister Wives Closet is officially closed 00:12:45 - A new pic of Micah Plath’s broken nose has surfaced 00:18:18 - Justin Baldoni back on social media and Taylor Swifts team is pissed at Justin Baldoni MY Go Big Podcasting Courses Are Here! Purchase Go Big Podcasting and learn to start, monetize, and grow your own podcast. USE CODE: MOM15 for 15% OFF (code expires May 11th, 2025) **SHOP my Amazon Marketplace - especially if you're looking to get geared-up to start your own Podcast!!!** https://www.amazon.com/shop/thesarahfrasershow Show is sponsored by: Download Cash App & sign up! Use our exclusive referral code TSFS in your profile, send $5 to a friend within 14 days, and you’ll get $10 dropped right into your account. Terms apply Horizonfibroids.com get rid of those nasty fibroids Gopurebeauty.com science backed skincare from head to toe, use code TSFS at checkout for 25% OFF your order Nutrafol.com use code TSFS for FREE shipping and $10 off your subscription Rula.com/tsfs to get started today. That’s R-U-L-A dot com slash tsfs for convenient therapy that’s covered by insurance. SkylightCal.com/tsfs for $30 OFF your 15 inch calendar Quince.com/tsfs for FREE shipping on your order and 365 day returns Warbyparker.com/tsfs make an appointment at one of their 270 store locations and head to the website to try on endless pairs of glasses virtually and buy your perfect pair Follow me on Instagram/Tiktok: @thesarahfrasershow ***Visit our Sub-Reddit: reddit.com/r/thesarahfrasershow for ALL things The Sarah Fraser Show!!!*** Advertise on The Sarah Fraser Show: thesarahfrasershow@gmail.com Got a juicy gossip TIP from your favorite TLC or Bravo show? Email: thesarahfrasershow@gmail.com Learn more about your ad choices. Visit megaphone.fm/adchoices…

לפני שנתיים 32:21

MP3•בית הפרקים

Nikolay and Michael discuss the default config — some tools and principles you can use to customise it, as well as several parameters you probably always want to change.

Here are links to a few things we mentioned:

------------------------

What did you like or not like? What should we discuss next time? Let us know by tweeting us on @samokhvalov / @michristofides / @PostgresFM, or by commenting on our Google doc.

If you would like to share this episode, here's a good link (and thank you!)

Postgres FM is brought to you by:

Nikolay Samokhvalov, founder of Postgres.ai
Michael Christofides, founder of pgMustard

With special thanks to:

Jessie Draws for the amazing artwork

146 פרקים

#Tech #News #Tech News #Michael Christofides #Nikolay Samokhvalov #Postgres #PostgreSQL #Database #SQL #Technology

Postgres FM

Default configuration

Postgres FM

37 subscribers

published לפני שנתיים

שתפו

MP3•בית הפרקים

Nikolay and Michael discuss the default config — some tools and principles you can use to customise it, as well as several parameters you probably always want to change.

Here are links to a few things we mentioned:

------------------------

What did you like or not like? What should we discuss next time? Let us know by tweeting us on @samokhvalov / @michristofides / @PostgresFM, or by commenting on our Google doc.

If you would like to share this episode, here's a good link (and thank you!)

Postgres FM is brought to you by:

Nikolay Samokhvalov, founder of Postgres.ai
Michael Christofides, founder of pgMustard

With special thanks to:

Jessie Draws for the amazing artwork

146 פרקים

#Tech #News #Tech News #Michael Christofides #Nikolay Samokhvalov #Postgres #PostgreSQL #Database #SQL #Technology

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לפני 18 weeks26:48

26:48

Nikolay and Michael discuss a couple of surprising ways read queries (selects) can cause writes (shared buffers dirtied) in Postgres. Here are some links to things they mentioned: Reads causing writes in Postgres (post by Alex Jesipow) https://jesipow.com/blog/postgres-reads-cause-writes/ Exploring how SELECT queries can produce disk writes (post by Nikolay Sivko) https://blog.okmeter.io/postgresql-exploring-how-select-queries-can-produce-disk-writes-f36c8bee6b6f Hint Bits (wiki) https://wiki.postgresql.org/wiki/Hint_Bits pg_stat_statements https://www.postgresql.org/docs/current/pgstatstatements.html pg_stat_kcache https://github.com/powa-team/pg_stat_kcache pg_wait_sampling https://github.com/postgrespro/pg_wait_sampling BUFFERS by default (episode 4!) https://postgres.fm/episodes/buffers-by-default Page layout (docs) https://www.postgresql.org/docs/current/storage-page-layout.html From Reddit (user merlinm), PD_ALL_VISIBLE may be a third case https://www.reddit.com/r/PostgreSQL/comments/1hjuyfn/comment/m3e6e7v/ Coroot https://coroot.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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
NOT VALID constraints 33:56

לפני 19 weeks33:56

33:56

Nikolay and Michael discuss adding constraints in an online fashion, using NOT VALID and then VALIDATE CONSTRAINT. Here are some links to things they mentioned: ADD table_constraint NOT VALID https://www.postgresql.org/docs/current/sql-altertable.html#SQL-ALTERTABLE-DESC-ADD-TABLE-CONSTRAINT Our episode on zero-downtime migrations https://postgres.fm/episodes/zero-downtime-migrations VALIDATE CONSTRAINT https://www.postgresql.org/docs/current/sql-altertable.html#SQL-ALTERTABLE-DESC-VALIDATE-CONSTRAINT ALTER TABLE notes https://www.postgresql.org/docs/current/sql-altertable.html#SQL-ALTERTABLE-NOTES pgroll https://github.com/xataio/pgroll ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
pg_squeeze 36:26

לפני 20 weeks36:26

36:26

Michael and Nikolay are joined by Antonín Houska to discuss pg_squeeze — what it is, how it started, some of its features, and hopes of getting the functionality into core. Here are some links to things they mentioned: Antonín Houska https://postgres.fm/people/antonin-houska pg_squeeze https://github.com/cybertec-postgresql/pg_squeeze Cybertec https://www.cybertec-postgresql.com pg_repack https://github.com/reorg/pg_repack Introducing pg_squeeze (by Kaarel Moppel) https://www.cybertec-postgresql.com/en/introducing-pg_squeeze-a-postgresql-extension-to-auto-rebuild-bloated-tables pg_squeeze is included in the PostgreSQL APT packages https://wiki.postgresql.org/wiki/Apt pg_squeeze is included in the PostgreSQL Yum packages https://yum.postgresql.org pg_rewrite https://github.com/cybertec-postgresql/pg_rewrite VACUUM FULL / CLUSTER CONCURRENTLY patch https://commitfest.postgresql.org/51/5117 ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
pg_duckdb 40:08

לפני 21 weeks40:08

40:08

Michael and Nikolay are joined by Joe Sciarrino and Jelte Fennema-Nio to discuss pg_duckdb — what it is, how it started, what early users are using it for, and what they're working on next. Here are some links to things they mentioned: Joe Sciarrino https://postgres.fm/people/joe-sciarrino Jelte Fennema-Nio https://postgres.fm/people/jelte-fennema-nio pg_duckdb https://github.com/duckdb/pg_duckdb Hydra https://www.hydra.so MotherDuck https://motherduck.com The problems and benefits of an elephant with a beak (lightning talk by Jelte) https://www.youtube.com/watch?v=ogvbKE4fw9A&list=PLF36ND7b_WU4QL6bA28NrzBOevqUYiPYq&t=1073s pg_duckdb announcement post (by Jordan and Brett from MotherDuck) https://motherduck.com/blog/pg_duckdb-postgresql-extension-for-duckdb-motherduck pg_duckdb 0.2 release https://github.com/duckdb/pg_duckdb/releases/tag/v0.2.0 ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
RLS vs performance 40:48

לפני 23 weeks40:48

40:48

Nikolay and Michael discuss Row Level Security in Postgres, focussing on the performance side effects and some tips to avoid (or minimize) them. Here are some links to things they mentioned: Row Security Policies (docs) https://www.postgresql.org/docs/current/ddl-rowsecurity.html 7+ million Postgres tables (recent talk by Kailash Nadh) https://www.youtube.com/watch?v=xhi5Q_wL9i0 Row Level Security guide (Supabase docs) https://supabase.com/docs/guides/database/postgres/row-level-security current_setting function https://www.postgresql.org/docs/current/functions-admin.html#id-1.5.8.34.3.6.2.2.1.1.1.1 Our slow count episode https://postgres.fm/episodes/slow-count RLS Performance and Best Practices (gist from Gary Austin) https://github.com/orgs/supabase/discussions/14576 Everything you need to know about Postgres Row Level Security (talk by Paul Copplestone) https://www.youtube.com/watch?v=vZT1Qx2xUCo BUFFERS enabled for EXPLAIN ANALYZE by default (commit for Postgres 18) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=c2a4078ebad71999dd451ae7d4358be3c9290b07 Add UUID version 7 generation function (commit for Postgres 18) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=78c5e141e9c139fc2ff36a220334e4aa25e1b0eb Postgres hacking session with Andrey and Kirk (for UUIDv7): https://www.youtube.com/watch?v=YPq_hiOE-N8 ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
jOOQ 50:31

לפני 24 weeks50:31

50:31

Michael and Nikolay are joined by Lukas Eder, the creator of jOOQ, to discuss what it is, some nice developer experience features it has, and some fun things he's come across from a Postgres perspective. Here are some links to things they mentioned: Lukas Eder https://postgres.fm/people/lukas-eder jOOQ https://www.jooq.org/ DSL https://en.wikipedia.org/wiki/Domain-specific_language SQL Dialects https://www.jooq.org/javadoc/latest/org.jooq/org/jooq/SQLDialect.html MERGE https://www.postgresql.org/docs/current/sql-merge.html match_recognize https://modern-sql.com/feature/match_recognize JOOQ, joy of SQL (talk by Kevin Davin) https://www.youtube.com/watch?v=8Ej47GZX9D8 BUFFERS enabled for EXPLAIN ANALYZE by default (commit for Postgres 18) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=c2a4078ebad71999dd451ae7d4358be3c9290b07 PostGIS https://postgis.net/ 10 SQL Tricks That You Didn’t Think Were Possible (blog post by Lukas) https://blog.jooq.org/10-sql-tricks-that-you-didnt-think-were-possible/ jOOQ questions on Stack Overflow https://stackoverflow.com/questions/tagged/jooq Our episode on NULLs https://postgres.fm/episodes/nulls-the-good-the-bad-the-ugly-and-the-unknown ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Column Tetris 41:06

לפני 25 weeks41:06

41:06

Nikolay and Michael discuss "Column Tetris" — what it is, why it matters, how to order columns for new tables, and how to re-organise existing ones. Here are some links to things they mentioned: “Column Tetris” by Erwin Brandstetter on Stack Overflow https://stackoverflow.com/questions/2966524/calculating-and-saving-space-in-postgresql/7431468#7431468 Data Types https://www.postgresql.org/docs/current/datatype.html OrioleDB beta7 benchmarks https://www.orioledb.com/blog/orioledb-beta7-benchmarks pg_hexedit https://github.com/petergeoghegan/pg_hexedit Saving Space Basically for Free (blog post by James Coleman from Braintree) https://medium.com/paypal-tech/postgresql-at-scale-saving-space-basically-for-free-d94483d9ed9a Ordering Table Columns (GitLab https://docs.gitlab.com/ee/development/database/ordering_table_columns.html postgres_dba alignment padding query https://github.com/NikolayS/postgres_dba/blob/master/sql/p1_alignment_padding.sql Good explanation from Marco Slot of how alignment was used to fix a recent issue https://x.com/marcoslot/status/1858132850383421570 pg_repack feature request discussion https://github.com/reorg/pg_repack/issues/101 Our episode on bloat (with Chelsea Dole) https://postgres.fm/episodes/bloat Optimizing table layout for maximum efficiency (blog post by Renato Massaro) https://r.ena.to/blog/optimizing-postgres-table-layout-for-maximum-efficiency ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
pg_stat_statements track_planning 37:55

לפני 26 weeks37:55

37:55

Nikolay and Michael discuss the track_planning parameter of pg_stat_statements — what it is, how it affects performance, and when or whether you should switch it on. Here are some links to things they mentioned: pg_stat_statements.track_planning https://www.postgresql.org/docs/current/pgstatstatements.html#id-1.11.7.40.9.2.4.1.3 Our episode about pg_stat_statements https://postgres.fm/episodes/pg_stat_statements PostgreSQL 13.0 release notes https://www.postgresql.org/docs/release/13.0/ track_planning causing performance regression (thread on hackers during v13 beta) https://www.postgresql.org/message-id/flat/2895b53b033c47ccb22972b589050dd9%40EX13D05UWC001.ant.amazon.com Our episode on 4 million TPS https://postgres.fm/episodes/four-million-tps Observer effect in pg_stat_statements and pg_stat_kcache (Postgres TV Hacking session with Andrey and Kirk) https://www.youtube.com/live/wHMNX-fHb2A?si=DPgmrPaSpPF6DxuS ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Is pg_dump a backup tool? 48:44

לפני 27 weeks48:44

48:44

Michael and Nikolay are joined by Gülçin Yıldırım Jelínek and Robert Haas to discuss both the technical question of whether or not pg_dump is a backup tool, as well as the tone and intent behind the statement "pg_dump is not a backup tool". Here are some links to things they mentioned: Gülçin Yıldırım Jelínek https://postgres.fm/people/gulcin-yildirim-jelinek Robert Haas https://postgres.fm/people/robert-haas Why you should upgrade PostgreSQL today (blog post by Gülçin) https://xata.io/blog/cve-2024-7348-postgres-upgrade If pg_dump is not a backup tool, what is? (blog post by Gülçin) https://xata.io/blog/pgdump-is-not-a-backup-tool Is pg_dump a backup tool? (blog post by Robert) https://rhaas.blogspot.com/2024/10/is-pgdump-backup-tool.html?m=1 Why pg_dump is amazing (blog post by Robert) https://rhaas.blogspot.com/2024/11/why-pgdump-is-amazing.html Avoid too prominent use of "backup" on pg_dump man page (commit by Peter Eisentraut) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=4f29394ea941f688fd4faf7260d2c198931ca797 Is pg_dump a backup tool? (poll by Nikolay with options Yes / No / Define backup) https://x.com/samokhvalov/status/1847015453056786771 What's the best way to make a backup (a recent example discussion on Reddit) https://www.reddit.com/r/PostgreSQL/comments/1gu4r05/whats_the_best_way_to_make_a_backup/ Hackers mailing list https://www.postgresql.org/list/pgsql-hackers/ Praise, Criticism, and Dialogue (blog post by Robert) https://rhaas.blogspot.com/2023/12/praise-criticism-and-dialogue.html Out-of-cycle release scheduled for November 21, 2024 https://www.postgresql.org/about/news/out-of-cycle-release-scheduled-for-november-21-2024-2958/ pgBackRest https://github.com/pgbackrest/pgbackrest Barman https://github.com/EnterpriseDB/barman Our previous episode on backups https://postgres.fm/episodes/backups ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Append-only tables 44:07

לפני 28 weeks44:07

44:07

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-only Our episode on BRIN indexes https://postgres.fm/episodes/brin-indexes Tips 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-tuning autovacuum_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/compression New project announced recently called BemiDB https://x.com/samokhvalov/status/1854726389603484145 pg_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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Denormalization 35:08

לפני 29 weeks35:08

35:08

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/Denormalization Our episode on materialized views https://postgres.fm/episodes/materialized-views Our episode on data model trade-offs https://postgres.fm/episodes/data-model-trade-offs Our episode with Markus Winand https://postgres.fm/episodes/modern-sql Universal Relation Data Modelling Considered Harmful (blog post by Michael Stonebraker and Álvaro Hernández) https://www.enterprisedb.com/blog/universal-relation-data-modelling-considered-harmful Boyce–Codd normal form https://en.wikipedia.org/wiki/Boyce%E2%80%93Codd_normal_form Our episode on slow count https://postgres.fm/episodes/slow-count pg_ivm https://github.com/sraoss/pg_ivm denorm https://github.com/rivethealth/denorm Postgres 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/pgq Databases, 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Postgres online communities 38:09

לפני 30 weeks38:09

38:09

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/community Mailing lists https://www.postgresql.org/list IRC https://www.postgresql.org/community/irc Slack https://pgtreats.info/slack-invite Stack Overflow https://stackoverflow.com/questions/tagged/postgres DBA Stack Exchange https://dba.stackexchange.com/questions/tagged/postgres Reddit https://www.reddit.com/r/PostgreSQL Discord https://discord.gg/bW2hsax8We How to run ANALYZE (merge request discussion) https://gitlab.com/postgres-ai/postgresql-consulting/postgres-howtos/-/merge_requests/35 This episode on YouTube https://postgresqlco.nf Planet PostgreSQL https://planet.postgresql.org Postgres 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Advanced psql 52:37

לפני 31 weeks52:37

52:37

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-guis postgres_dba https://github.com/NikolayS/postgres_dba Our episode on massive deletes https://postgres.fm/episodes/massive-deletes Postgres 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-gotchas current_setting() and set_config() docs https://www.postgresql.org/docs/current/functions-admin.html#FUNCTIONS-ADMIN-SET psql 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Postgres Gotchas 40:19

לפני 32 weeks40:19

40:19

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-unknown Postgres Gotchas (list by Ian Barwick) https://sql-info.de/postgresql/postgres-gotchas.html Our episode on slow count https://postgres.fm/episodes/slow-count Discussion on X about major version upgrades and statistics https://x.com/samokhvalov/status/1844593601638260850 Our episode on upgrades https://postgres.fm/episodes/upgrades Statistics 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.html vacuum_cost_delay https://www.postgresql.org/docs/current/runtime-config-resource.html#GUC-VACUUM-COST-DELAY Zero-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-retries Postgres 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-safeupdate DBOS (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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Advanced EXPLAIN 48:47

לפני 33 weeks48:47

48:47

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/explain Our episode on auto_explain https://postgres.fm/episodes/auto_explain Which cloud providers support auto_explain? (Blog post by Michael) https://www.pgmustard.com/blog/which-cloud-providers-support-auto-explain psychopg https://www.psycopg.org Our first episode on BUFFERS https://postgres.fm/episodes/buffers-by-default Our second episode on BUFFERS https://postgres.fm/episodes/buffers-ii-the-sequel track_io_timing https://www.postgresql.org/docs/current/runtime-config-statistics.html#GUC-TRACK-IO-TIMING compute_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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Patroni 45:33

לפני 34 weeks45:33

45:33

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-kukushkin Patroni https://github.com/patroni/patroni Spilo https://github.com/zalando/spilo Zalando Postgres Operator https://github.com/zalando/postgres-operator Crunchy Data Postgres Operator https://github.com/CrunchyData/postgres-operator Split-brain https://en.wikipedia.org/wiki/Split-brain_(computing) repmgr https://github.com/EnterpriseDB/repmgr CloudNativePG https://github.com/cloudnative-pg/cloudnative-pg Patroni release notes https://patroni.readthedocs.io/en/latest/releases.html Citus & 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Postgres 17 42:03

לפני 35 weeks42:03

42:03

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.html transaction_timeout episode https://postgres.fm/episodes/transaction_timeout VACUUM improvements discussed towards end of episode with Melanie Plageman https://postgres.fm/episodes/getting-started-with-benchmarking B-tree improvements discussed in episdode with Peter Geoghegan https://postgres.fm/episodes/skip-scan As 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-scans MERGE RETURNING came up towards end of episode with Haki Benita https://postgres.fm/episodes/get-or-create uuid_extract_timestamp and uuid_extract_version functions https://www.postgresql.org/docs/current/functions-uuid.html Episode on UUID https://postgres.fm/episodes/uuid Partitioning by ULID https://postgres.fm/episodes/partitioning-by-ulid Why Upgrade? (site by depesz) https://why-upgrade.depesz.com Why 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-subtransactions Synchronization 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Planning time 42:17

לפני 36 weeks42:17

42:17

Nikolay and Michael discuss planning time in Postgres — what it is, how to spot issues, its relationship to things like partitioning, and some tips for avoiding issues. Here are some links to things they mentioned: Query Planning (docs) https://www.postgresql.org/docs/current/runtime-config-query.html Are there limits to partition counts? (Blog post by depesz) https://www.depesz.com/2021/01/17/are-there-limits-to-partition-counts Nikolays recent experiment https://postgres.ai/chats/01920004-a982-7896-b8cb-dfd2406359b0 PgBouncer now supports prepared statements https://github.com/pgbouncer/pgbouncer/releases/tag/pgbouncer_1_21_0 “The year of the lock manager’s revenge” (from blog post by Jeremy Schneider) https://ardentperf.com/2024/03/03/postgres-indexes-partitioning-and-lwlocklockmanager-scalability pg_stat_statements.track_planning https://www.postgresql.org/docs/current/pgstatstatements.html#id-1.11.7.42.9.2.4.1.3 pg_hint_plan https://github.com/ossc-db/pg_hint_plan ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Slow count 43:25

לפני 37 weeks43:25

43:25

Nikolay and Michael discuss why counting can be slow in Postgres, and what the options are for counting things quickly at scale. Here are some links to things they mentioned: Aggregate functions (docs) https://www.postgresql.org/docs/current/functions-aggregate.html PostgREST https://github.com/PostgREST/postgrest Get rid of count by default in PostgREST https://github.com/PostgREST/postgrest/issues/273 Faster PostgreSQL Counting (by Joe Nelson on the Citus blog) https://www.citusdata.com/blog/2016/10/12/count-performance Our episode on Index-Only Scans https://postgres.fm/episodes/index-only-scans Postgres HyperLogLog https://github.com/citusdata/postgresql-hll Our episode on Row estimates https://postgres.fm/episodes/row-estimates Our episode about dangers of NULLs https://postgres.fm/episodes/nulls-the-good-the-bad-the-ugly-and-the-unknown Aggregate expressions, including FILTER https://www.postgresql.org/docs/current/sql-expressions.html#SYNTAX-AGGREGATES Spread writes for counter cache (tip from Tobias Petry) https://x.com/tobias_petry/status/1475870220422107137 pg_ivm extension (Incremental View Maintenance) https://github.com/sraoss/pg_ivm pg_duckdb announcement https://motherduck.com/blog/pg_duckdb-postgresql-extension-for-duckdb-motherduck Our episode on Queues in Postgres https://postgres.fm/episodes/queues-in-postgres Our episode on Real-time analytics https://postgres.fm/episodes/real-time-analytics ClickHouse acquired PeerDB https://clickhouse.com/blog/clickhouse-acquires-peerdb-to-boost-real-time-analytics-with-postgres-cdc-integration Timescale Continuous Aggregates https://www.timescale.com/blog/materialized-views-the-timescale-way Timescale editions https://docs.timescale.com/about/latest/timescaledb-editions Loose indexscan https://wiki.postgresql.org/wiki/Loose_indexscan ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Skip scan 57:49

לפני 38 weeks57:49

57:49

Michael and Nikolay are joined by Peter Geoghegan, major contributor and committer to Postgres, to discuss adding skip scan support to PostgreSQL over versions 17 and 18. Here are some links to things they mentioned: Peter Geoghegan https://postgres.fm/people/peter-geoghegan Peter’s previous (excellent) interview on Postgres TV https://www.youtube.com/watch?v=iAPawr1DxhM Efficient Search of Multidimensional B-Trees (1995 paper by Harry Leslie, Rohit Jain, Dave Birdsall, and Hedieh Yaghmai) https://vldb.org/conf/1995/P710.PDF Index Skip Scanning in Oracle https://oracle-base.com/articles/9i/index-skip-scanning Peter’s introductory email to the hackers mailing list about adding skip scan https://www.postgresql.org/message-id/CAH2-Wzmn1YsLzOGgjAQZdn1STSG_y8qP__vggTaPAYXJP+G4bw@mail.gmail.com Loose Indexscan versus Index Skip Scan (PostgreSQL wiki) https://wiki.postgresql.org/wiki/Loose_indexscan Tom Lane will be on the Talking Postgres podcast on October 9th https://aka.ms/TalkingPostgres-Ep20-cal Benoit Tigeot feedback and repro (originally reported via Slack) https://gist.github.com/benoittgt/ab72dc4cfedea2a0c6a5ee809d16e04d?permalink_comment_id=4597410#gistcomment-4597410 Summary video and blog post about the v17 work by Lukas from pganalyze (not mentioned but great) https://pganalyze.com/blog/5mins-postgres-17-faster-btree-index-scans Understanding HNSW + filtering (pgvector repo discussion) https://github.com/pgvector/pgvector/issues/259 btree_gin https://www.postgresql.org/docs/current/btree-gin.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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Postgres Emergency Room 45:27

לפני 39 weeks45:27

45:27

Nikolay and Michael discuss PostgreSQL emergencies — both the psychological side of incident management, and some technical aspects too. Here are some links to things they mentioned: Site Reliability Engineering resources from Google https://sre.google GitLab Handbook SRE https://handbook.gitlab.com/job-families/engineering/infrastructure/site-reliability-engineer Keeping Customers Streaming — The Centralized Site Reliability Practice at Netflix https://netflixtechblog.com/keeping-customers-streaming-the-centralized-site-reliability-practice-at-netflix-205cc37aa9fb Our monitoring checklist episode https://postgres.fm/episodes/monitoring-checklist Hannu Krosing talk on Postgres TV — Do you vacuum everyday? https://www.youtube.com/watch?v=JcRi8Z7rkPg Our episode on corruption https://postgres.fm/episodes/corruption Nikolay’s episode on stopping and starting Postgres faster https://postgres.fm/episodes/stop-and-start-postgres-faster Our episode on out of disk https://postgres.fm/episodes/out-of-disk The USE method (Brendan Gregg) https://www.brendangregg.com/usemethod.html Thundering herd problem https://en.wikipedia.org/wiki/Thundering_herd_problem pgwatch2 Postgres AI edition https://gitlab.com/postgres-ai/pgwatch2 ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Get or Create 50:19

לפני 40 weeks50:19

50:19

Michael and Nikolay are joined by Haki Benita, a technical lead and database enthusiast who writes an excellent blog and gives popular talks and training sessions too, to discuss the surprisingly complex topic of trying to implement “get or create” in PostgreSQL — handling issues around idempotency, concurrency, and bloat. Here are some links to things they mentioned: Haki Benita https://hakibenita.com How to Get or Create in PostgreSQL (blog post by Haki) https://hakibenita.com/postgresql-get-or-create "Find-or-insert" using a single query (how-to guide by Nikolay) https://gitlab.com/postgres-ai/postgresql-consulting/postgres-howtos/-/blob/main/0036_find-or-insert_using_a_single_query.md?ref_type=heads Is SELECT or INSERT in a function prone to race conditions? (Answer by Erwin Brandstetter) https://stackoverflow.com/questions/15939902/is-select-or-insert-in-a-function-prone-to-race-conditions/15950324#15950324 get_or_create() in Django https://docs.djangoproject.com/en/5.1/ref/models/querysets/#get-or-create Subtransactions Considered Harmful (blog post by Nikolay) https://postgres.ai/blog/20210831-postgresql-subtransactions-considered-harmful MERGE (Postgres documentation) https://www.postgresql.org/docs/current/sql-merge.html Hidden dangers of duplicate key violations in PostgreSQL and how to avoid them (blog post by Divya Sharma and Shawn McCoy from the RDS team) https://aws.amazon.com/blogs/database/hidden-dangers-of-duplicate-key-violations-in-postgresql-and-how-to-avoid-them/ One, Two, Skip a Few... (blog post by Pete Hamilton from Incident) https://incident.io/blog/one-two-skip-a-few ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Getting started with benchmarking 56:32

לפני 41 weeks56:32

56:32

Michael and Nikolay are joined by Melanie Plageman, database internals engineer at Microsoft and major contributor and committer to PostgreSQL, to discuss getting started with benchmarking — how it differs for users and developers of Postgres, how and when it comes up during development, some tools and lessons, as well as what she's working on at the moment. Here are some links to things they mentioned: Melanie Plageman https://postgres.fm/people/melanie-plageman Meanie’s Introduction to Benchmarking With pgbench talk slides https://postgresql.us/events/pgconfnyc2023/schedule/session/1410-introduction-to-benchmarking-with-pgbench/#slides Melanie’s Visualizing Postgres I/O Performance for Development talk recording https://www.youtube.com/watch?v=CxyPZHG5beI Melanie’s Visualizing Postgres I/O Performance for Development talk slides https://speakerdeck.com/melanieplageman/o-performance-for-development pgbench https://www.postgresql.org/docs/current/pgbench.html Mark Callaghan’s blog https://smalldatum.blogspot.com Some of Tomas Vondra’s blog posts https://www.2ndquadrant.com/en/blog/author/tomas-vondra Some of Andres Freund’s blog posts https://www.citusdata.com/blog/authors/andres-freund/ An example of Alexander Lakhin’s work https://www.postgresql.org/message-id/b32bed1b-0746-9b20-1472-4bdc9ca66d52%40gmail.com Simplifying the TPC Benchmark C, an OLTP Workload (talk by Mark Wong) https://www.youtube.com/watch?v=qi0I74urLoY Matplotlib https://matplotlib.org pandas https://pandas.pydata.org pg_stat_io https://www.postgresql.org/docs/current/monitoring-stats.html#MONITORING-PG-STAT-IO-VIEW pg_stat_io commit https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=a9c70b46dbe152e094f137f7e6ba9cd3a638ee25 pg_buffercache https://www.postgresql.org/docs/current/pgbuffercache.html tmpfs https://docs.kernel.org/filesystems/tmpfs.html Eager page freeze criteria mailing list thread https://www.postgresql.org/message-id/CAAKRu_b3tpbdRPUPh1Q5h35gXhY%3DspH2ssNsEsJ9sDfw6%3DPEAg%40mail.gmail.com The path to using AIO in postgres (talk by Andres Freund) https://www.youtube.com/watch?v=qX50xrHwQa4 Improve dead tuple storage for lazy vacuum (Masahiko Sawada) https://www.postgresql.org/message-id/flat/CAD21AoAfOZvmfR0j8VmZorZjL7RhTiQdVttNuC4W-Shdc2a-AA@mail.gmail.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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Index-Only Scans 39:15

לפני 42 weeks39:15

39:15

Nikolay and Michael discuss Index-Only Scans in Postgres — what they are, how they help, some things to look out for, and some advice. Here are some links to things they mentioned: Index-Only Scans and Covering Indexes (docs) https://www.postgresql.org/docs/current/indexes-index-only-scans.html Discussion on Twitter about JIT and Parallel Query defaults https://x.com/jer_s/status/1819749688184373742 Postgres Wiki on Index-Only Scans https://wiki.postgresql.org/wiki/Index-only_scans Heap Fetches https://www.pgmustard.com/docs/explain/heap-fetches Rows Removed By Filter https://www.pgmustard.com/docs/explain/rows-removed-by-filter random_page_cost https://postgresqlco.nf/doc/en/param/random_page_cost/ pg_dump docs change https://x.com/samokhvalov/status/1820539826363588755 Crunchy Bridge changed random_page_cost to 1.1 for new servers https://docs.crunchybridge.com/changelog#postgres_random_page_cost_1_1 Autovacuum Tuning Basics (updated blog post by Tomas Vondra) https://www.enterprisedb.com/blog/autovacuum-tuning-basics Our episode on over-indexing https://postgres.fm/episodes/over-indexing Our episode on HOT updates https://postgres.fm/episodes/hot-updates Our episode on partitioning https://postgres.fm/episodes/partitioning ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Why Postgres? 41:00

לפני 43 weeks41:00

41:00

Nikolay and Michael discuss why they chose Postgres — as users, for their businesses, for their careers, as well as some doubts. Here are some links to things they mentioned: Our episode on why Postgres become popular https://postgres.fm/episodes/why-is-postgres-popular Database Systems: The Complete Book (by Hector Garcia-Molina, Jeff Ullman, and Jennifer Widom) http://infolab.stanford.edu/~ullman/dscb.html Our episode on the Postgres startup ecosystem https://postgres.fm/episodes/postgres-startup-ecosystem Will Postgres Live Forever? (talk by Bruce Momjian) https://www.youtube.com/watch?v=iYVxWpyaGpA "Anarcho-Syndicalist Commune" from Monty Python and the Holy Grail https://www.youtube.com/watch?v=R7qT-C-0ajI The Cathedral and the Bazaar: Musings on Linux and Open Source by an Accidental Revolutionary (book by Eric S. Raymond) https://en.wikipedia.org/wiki/The_Cathedral_and_the_Bazaar ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Compression 45:16

לפני 44 weeks45:16

45:16

Nikolay and Michael discuss compression in Postgres — what's available natively, newer algorithms in recent versions, and several extensions with compression features. Here are some links to things they mentioned: wal_compression https://www.postgresql.org/docs/current/runtime-config-wal.html#GUC-WAL-COMPRESSION Our episode on WAL and checkpoint tuning https://postgres.fm/episodes/wal-and-checkpoint-tuning Synthetic wal_compression and streaming replication wal size test https://gitlab.com/postgres-ai/postgresql-consulting/tests-and-benchmarks/-/issues/11 default_toast_compression https://www.postgresql.org/docs/current/runtime-config-client.html#GUC-DEFAULT-TOAST-COMPRESSION ZFS https://en.wikipedia.org/wiki/ZFS Our episode on TOAST https://postgres.fm/episodes/toast On compression of everything in Postgres (talk by Andrey Borodin) https://learn.microsoft.com/en-us/shows/cituscon-an-event-for-postgres-2023/on-compression-of-everything-in-postgres-citus-con-2023 cstore_fdw https://citusdata.github.io/cstore_fdw/ Using Hydra columnar https://columnar.docs.hydra.so/concepts/using-hydra-columnar About compression in Timescale https://docs.timescale.com/use-timescale/latest/compression/about-compression/ pg_tier https://github.com/tembo-io/pg_tier pgBackRest https://pgbackrest.org/ WAL-G https://github.com/wal-g/wal-g pg_dump https://www.postgresql.org/docs/current/app-pgdump.html pg_dump compression specifications in PostgreSQL 16 (article by Pablo Glob from Cybertec) https://www.cybertec-postgresql.com/en/pg_dump-compression-specifications-postgresql-16/ Our episode on pgvector (with Jonathan Katz) https://postgres.fm/episodes/pgvector ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Out of disk 43:26

לפני 45 weeks43:26

43:26

Nikolay and Michael discuss Postgres running out of disk space — including what happens, what can cause it, how to recover, and most importantly, how to prevent it from happening in the first place. Here are some links to things they mentioned: Disk Full (docs) https://www.postgresql.org/docs/current/disk-full.html pgcompacttable https://github.com/dataegret/pgcompacttable Our episode on massive deletes https://postgres.fm/episodes/massive-deletes Getting Rid of Data (slides from VLDB 2019 keynote by Tova Milo) pg_tier https://github.com/tembo-io/pg_tier Data tiering in Timescale Cloud https://docs.timescale.com/use-timescale/latest/data-tiering/ Postgres is Out of Disk and How to Recover (blog post by Elizabeth Christensen) https://www.crunchydata.com/blog/postgres-is-out-of-disk-and-how-to-recover-the-dos-and-donts max_slot_wal_keep_size https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-MAX-SLOT-WAL-KEEP-SIZE Our episode on checkpoint tuning https://postgres.fm/episodes/wal-and-checkpoint-tuning Aiven docs on full disk issues https://aiven.io/docs/products/postgresql/howto/prevent-full-disk ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Postgres startup ecosystem 35:42

לפני 46 weeks35:42

35:42

Nikolay and Michael discuss the Postgres startup ecosystem — some recent closures, some recent fundraising announcements, and their thoughts on where things are going and what they'd like to see. Here are some links to things they mentioned: Prediction from Dax Raad https://x.com/thdxr/status/1808972166752580039 OtterTune shut down https://x.com/andy_pavlo/status/1801687420330770841 Snaplet shutting down https://www.snaplet.dev/post/snaplet-is-shutting-down bit.io shut down https://blog.bit.io/whats-next-for-bit-io-joining-databricks-ace9a40bce0d?gi=8ef885454eef Timescale acquired PopSQL https://www.timescale.com/blog/best-postgresql-gui-popsql-joins-timescale Aiven https://aiven.io Hasura https://hasura.io Supabase https://supabase.com Neon https://neon.tech Tembo https://tembo.io FerretDB https://www.ferretdb.com Hydra https://www.hydra.so pgEdge https://www.pgedge.com Tembo raised $14m https://techcrunch.com/2024/07/08/database-startup-tembo-lands-new-cash-to-expand Ry Walker’s Cybertruck with STARTUP license plate https://x.com/rywalker/status/1810061804380557516 Supabase acquired OrioleDB https://supabase.com/blog/supabase-acquires-oriole Michael Stonebraker Turing Award Lecture https://www.youtube.com/watch?v=BbGeKi6T6QI Microsoft acquired Citus https://blogs.microsoft.com/blog/2019/01/24/microsoft-acquires-citus-data-re-affirming-its-commitment-to-open-source-and-accelerating-azure-postgresql-performance-and-scale Crunchy Bridge https://www.crunchydata.com/products/crunchy-bridge PeerDB https://www.peerdb.io ParadeDB https://www.paradedb.com pganalyze https://pganalyze.com DBeaver https://dbeaver.io Postico / Egger Apps https://eggerapps.at/postico2 Postgres Compare https://www.postgrescompare.com Coroot https://coroot.com okmeter https://okmeter.io Slides from Nikolay’s talk on monitoring https://bit.ly/pg-monitoring Nile https://www.thenile.dev Ubicloud https://www.ubicloud.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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Four million TPS 45:50

לפני 47 weeks45:50

45:50

Nikolay talks Michael through a recent experiment to find the current maximum transactions per second single-node Postgres can achieve — why he was looking into it, what bottlenecks occurred along the way, and ideas for follow up experiments. Here are some links to things they mentioned: How many TPS can we get from a single Postgres node? (Article by Nikolay) https://www.linkedin.com/pulse/how-many-tps-can-we-get-from-single-postgres-node-nikolay-samokhvalov-yu0rc Chat history with Postgres AI bot https://postgres.ai/chats/01905a83-4573-7dca-b47a-bb60ce30fe6c Our episode on the overhead of pg_stat_statements and pg_stat_kcache https://postgres.fm/episodes/overhead-of-pg_stat_statements-and-pg_stat_kcache PostgreSQL 17 beta 2 is out https://www.postgresql.org/about/news/postgresql-17-beta-2-released-2885/ PostgreSQL and MySQL: Millions of Queries per Second (about the work by Sveta and Alexander) https://www.percona.com/blog/millions-queries-per-second-postgresql-and-mysql-peaceful-battle-at-modern-demanding-workloads postgresql_cluster https://github.com/vitabaks/postgresql_cluster Track on CPU events for pg_wait_sampling https://github.com/postgrespro/pg_wait_sampling/pull/74 The year of the Lock Manager’s Revenge (post by Jeremy Schneider) https://ardentperf.com/2024/03/03/postgres-indexes-partitioning-and-lwlocklockmanager-scalability Pluggable cumulative statistics (Postgres hackers thread started by Michael Paquier) https://www.postgresql.org/message-id/flat/Zmqm9j5EO0I4W8dx%40paquier.xyz ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Soft delete 37:40

לפני 48 weeks37:40

37:40

Nikolay and Michael discuss soft deletion in Postgres — what it means, several use cases, some implementation options, and which implementations suit which use cases. Here are some links to things they mentioned: Soft deletion probably isn't worth it (blog post by Brandur) https://brandur.org/soft-deletion Easy alternative soft deletion (blog post by Brandur) https://brandur.org/fragments/deleted-record-insert Our episode on auditing https://postgres.fm/episodes/auditing CREATE FUNCTION … SECURITY DEFINER (docs) https://www.postgresql.org/docs/current/sql-createfunction.html Principle of least privilege https://en.wikipedia.org/wiki/Principle_of_least_privilege ~~~ 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 pgMustard Nikolay Samokhvalov, founder of Postgres.ai With special thanks to: Jessie Draws for the elephant artwork…

Postgres FM

1
Should we use foreign keys? 51:21

לפני 49 weeks51:21

51:21

Nikolay and Michael discuss foreign keys in Postgres — what they are, their benefits, their overhead, some edge cases to be aware of, some improvements coming, and whether or not they generally recommend using them. Here are some links to things they mentioned: Foreign keys (docs) https://www.postgresql.org/docs/current/ddl-constraints.html#DDL-CONSTRAINTS-FK Our episode about constraints: https://postgres.fm/episodes/constraints GitLab migration helper add_concurrent_foreign_key https://github.com/gitlabhq/gitlabhq/blob/master/rubocop/cop/migration/add_concurrent_foreign_key.rb Adding a foreign key without downtime (tweet by Nikolay) https://x.com/samokhvalov/status/1732056107483636188 Bloat, pg_repack, and deferred constraints (blog post by Miro) https://medium.com/miro-engineering/postgresql-bloat-pg-repack-and-deferred-constraints-d0ecf33337ec Postgres 17 draft release notes, server configuration section https://www.postgresql.org/docs/17/release-17.html#RELEASE-17-SERVER-CONFIG Our 100th episode https://postgres.fm/episodes/to-100tb-and-beyond Stop! Trigger Time (blog post by Michael) https://www.pgmustard.com/blog/trigger-time Should I Create an Index on Foreign Keys? (Blog post by Percona) https://www.percona.com/blog/should-i-create-an-index-on-foreign-keys-in-postgresql Avoid Postgres performance cliffs with MultiXact IDs and foreign keys (5 min video by Lukas Fittl) https://pganalyze.com/blog/5mins-postgres-multiXact-ids-foreign-keys-performance Experiment to see basic overhead of foreign keys https://v2.postgres.ai/chats/01902ee6-8ed1-70ec-9345-5606305012f4 Experiment showing an extreme contention case https://v2.postgres.ai/chats/018fb28d-865f-788d-adb7-efa7ed3a48c4 Subtransactions Considered Harmful (blog post by Nikolay) https://postgres.ai/blog/20210831-postgresql-subtransactions-considered-harmful Notes on some PostgreSQL implementation details (blog post by Nelson Elhage that mentions “subtransactions are cursed”) https://buttondown.email/nelhage/archive/notes-on-some-postgresql-implementation-details ~~~ 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 brought to you by: Nikolay Samokhvalov, founder of Postgres.ai Michael Christofides, founder of pgMustard With special thanks to: Jessie Draws for the amazing artwork…

ברוכים הבאים אל Player FM!

Player FM סורק את האינטרנט עבור פודקאסטים באיכות גבוהה בשבילכם כדי שתהנו מהם כרגע. זה יישום הפודקאסט הטוב ביותר והוא עובד על אנדרואיד, iPhone ואינטרנט. הירשמו לסנכרון מנויים במכשירים שונים.