Postgres FM copertina

Postgres FM

Postgres FM

Di: Nikolay Samokhvalov and Michael Christofides
Ascolta gratuitamente

Offerte di stagione | 0,99 €/mese per i primi 3 mesi

A seguire 9,99 €/mese – si applicano condizioni. Puoi disdire mensilmente.
A proposito di questo titolo
 A weekly podcast about all things PostgreSQL© 2026 Nikolay Samokhvalov and Michael Christofides Politica e governo
Episodi
  • Extensions on demand

    Extensions on demand
    Nov 6 2026
    Tip: watch on YouTube. Since episode 193, the video shows charts and illustrations as we talk. https://www.youtube.com/watch?v=7oeAAqU00zk Nik and Kirk are joined by Álvaro Hernández to discuss how Postgres in containers gets its extensions: a fat image with all of them, extensions downloaded at run time, or StackGres Containers, built on DOCIR (Dynamic OCI Registry), which composes an image with only the extensions you ask for, on demand. They also discuss what this means for security, pinning versions, and major upgrades. Here are some links to things they mentioned: Times are podcast times of the first mention.Main link[00:18:54] Dynamic containers for PostgreSQL: what we measured (DBLab Forge brief, PostgresAI) https://console.postgres.ai/shared/brief/c501d438-b872-4705-89a6-bdab30ea1680Álvaro and StackGres[00:00:25] Álvaro Hernández https://postgres.fm/people/alvaro-hernandez-tortosa[00:01:16] StackGres Containers (public beta; the images come from the registry host sgcr.io, and the demo used sgcr.dev, a dev instance) https://stackgres.io/containers[00:14:52] StackGres https://stackgres.io[00:20:55] PostgreSQL extensions in StackGres, loaded into running pods (docs) https://stackgres.io/doc/latest/features/extensions/[00:24:28] StackGres extensions cache, experimental (docs) https://stackgres.io/doc/latest/administration/extensions/cache/[01:04:08] Why Postgres extensions should be packaged and distributed as OCI images (Álvaro Hernández, 2024) https://ongres.com/blog/why-postgres-extensions-should-be-distributed-and-packaged-as-oci-images/Episodes[00:00:25] Our previous episode with Álvaro: Citus + StackGres https://postgres.fm/episodes/citus-stackgresHacking sessions[00:31:33] Hacking Postgres sessions with Andrey, Kirk and Nik (YouTube playlist, PostgresTV) https://www.youtube.com/playlist?list=PLH8y1BNPAKjKDdJA7sDmFWUkbbYux3TRzPostgres and extensions[00:38:51] extension_control_path, new in Postgres 18 (docs) https://www.postgresql.org/docs/18/runtime-config-client.html#GUC-EXTENSION-CONTROL-PATH[00:50:56] pg_background https://github.com/vibhorkum/pg_background[00:50:58] plsh (Peter Eisentraut) https://github.com/petere/plsh[01:02:58] PGXN, the PostgreSQL Extension Network https://pgxn.org[01:04:40] POC: Distributing Trunk binaries via OCI (David E. Wheeler, 2024) https://justatheory.com/2024/06/trunk-oci-poc/[01:05:12] Anarchy in the Database: a survey and evaluation of DBMS extensibility (Kim, Slot, Andersen, Pavlo, VLDB 2025; tests extensions in pairs) https://www.vldb.org/pvldb/vol18/p1962-kim.pdfContainers[00:01:22] OCI image format specification https://github.com/opencontainers/image-spec[00:41:19] Spilo (Zalando), one Postgres image with several major versions https://github.com/zalando/spilo[01:05:43] Testcontainers, PostgreSQL module https://testcontainers.com/modules/postgresql/Other[00:36:32] Mitchell Hashimoto on never updating dependencies unless it breaks (post on X, 2026-05-20) https://x.com/mitchellh/status/2057171518027887035~~~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 PostgresAIWith credit to:Jessie Draws for the elephant artworkIntro and outro music: our own arrangement of Apple Loops from GarageBand (royalty-free under the GarageBand licence)
    Mostra di più Mostra meno
    1 ora e 9 min
  • UUIDv4 vs UUIDv7

    UUIDv4 vs UUIDv7
    Oct 30 2026
    Tip: watch on YouTube. Since episode 193, the video shows charts and illustrations as we talk. https://www.youtube.com/watch?v=gf8e3JkQ_8M Nik is joined by Kirk Wolak to discuss what a random UUIDv4 primary key really costs compared with a time-ordered UUIDv7 or an int8 key on Postgres 18 — index size, WAL and full-page writes, insert rate once the index outgrows memory — and what DBLab Forge found when it ran the experiment. Here are some links to things they mentioned: Times are podcast times of the first mention.Main link[00:00:34] UUIDv4 vs UUIDv7 vs int8 primary keys on Postgres 18 (DBLab Forge brief, PostgresAI) https://console.postgres.ai/shared/brief/9fffe2da-00c1-470b-a79d-a210ae2306bcHacking sessions[00:00:51] Hacking Postgres 101: ULID function (Postgres.TV, 2023) https://www.youtube.com/watch?v=YPq_hiOE-N8[00:00:51] Hacking Postgres sessions with Andrey, Kirk and Nik (YouTube playlist, PostgresTV) https://www.youtube.com/playlist?list=PLH8y1BNPAKjKDdJA7sDmFWUkbbYux3TRzEpisodes[00:05:53] Our previous episode with Kirk, also built on DBLab Forge: Dump/restore done. Now what? https://postgres.fm/episodes/dump-restore-done-now-whatPostgres[00:01:34] Commit adding uuidv7() to Postgres 18 (78c5e141e9c1, 2024-12-11) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=78c5e141e9c1[00:04:16] UUID functions, uuidv7() and uuid_extract_timestamp() (docs) https://www.postgresql.org/docs/18/functions-uuid.html[00:20:42] full_page_writes (docs) https://www.postgresql.org/docs/current/runtime-config-wal.html#GUC-FULL-PAGE-WRITES[00:25:01] wal_compression, lz4 and zstd (docs) https://www.postgresql.org/docs/current/runtime-config-wal.html#GUC-WAL-COMPRESSION[00:31:07] pg_stat_io (docs) https://www.postgresql.org/docs/current/monitoring-stats.html#MONITORING-PG-STAT-IO-VIEWStandards and ID schemes[00:01:20] RFC 9562, Universally Unique IDentifiers (UUIDv7) https://www.rfc-editor.org/rfc/rfc9562[00:28:05] ULID spec https://github.com/ulid/spec[00:41:29] Snowflake ID (Twitter) https://github.com/twitter-archive/snowflake[00:41:29] Sharding & IDs at Instagram https://instagram-engineering.com/sharding-ids-at-instagram-1cf5a71e5a5cArticles, books and tools[00:05:34] Sequential UUID generators (Tomas Vondra, 2018) https://www.enterprisedb.com/blog/sequential-uuid-generators[00:05:59] Systems Performance, 2nd edition (Brendan Gregg) https://www.brendangregg.com/systems-performance-2nd-edition-book.html[00:12:25] fio https://github.com/axboe/fio[00:26:17] Amazon Aurora pricing (I/O charges) https://aws.amazon.com/rds/aurora/pricing/[00:32:53] UUIDv7 doesn't have the properties you think it does (Robert Alexander, 2026) https://alexsci.com/blog/uuidv7-is-weird/[00:32:53] Hacker News discussion of that article https://news.ycombinator.com/item?id=50211746~~~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 PostgresAIWith credit to:Jessie Draws for the elephant artworkIntro and outro music: our own arrangement of Apple Loops from GarageBand (royalty-free under the GarageBand licence)
    Mostra di più Mostra meno
    48 min
  • Dump/restore done. Now what?

    Dump/restore done. Now what?
    Oct 23 2026

    Nik is joined by Kirk Wolak, Software Architect at KiraSoft, to discuss what a database still needs after pg_restore finishes and before it takes production traffic — what pg_dump and pg_restore leave behind, why autovacuum may not catch up in time, and how Postgres itself could do better.

    Here are some links to things they mentioned:
    Times are podcast times of the first mention.


    Hacking sessions

    • [00:00:27] Hacking Postgres sessions with Andrey, Kirk and Nik (YouTube playlist, PostgresTV) https://www.youtube.com/playlist?list=PLH8y1BNPAKjKDdJA7sDmFWUkbbYux3TRz
    • [00:00:27] Hacking Postgres website https://hacking.postgres.tv
    • [00:00:27] Hacking Postgres Telegram group https://t.me/postgres_hacking


    Episodes

    • [00:00:27] Our previous episode with Kirk: GSoC B-Tree Merge https://postgres.fm/episodes/gsoc-btree-merge
    • [00:03:23] Is pg_dump a backup tool? https://postgres.fm/episodes/is-pg_dump-a-backup-tool


    pgsql-hackers

    • [00:15:39] pg_restore --include-analyze proposal (Jian He, 2025) https://www.postgresql.org/message-id/flat/CACJufxGx_YLLxmnZVMuUApiVYqjKrydvEQqD3qxhwM6e0_8jrQ%40mail.gmail.com
    • [00:30:13] ANALYZE after restore (Christopher Kings-Lynne, 2002) https://www.postgresql.org/message-id/GNELIHDDFBOCMGBFGEFOOEOPCBAA.chriskl%40familyhealth.com.au
    • [00:31:55] Statistics Import and Export (PG18 statistics transfer) https://www.postgresql.org/message-id/flat/CADkLM%3DfzX7QX6r78fShWDjNN3Vcr4PVAnvXxQ4DiGy6V%3D0bCUA%40mail.gmail.com


    Commits

    • [00:04:39] Transfer statistics during pg_upgrade (adds statistics to pg_dump, PG18) https://github.com/postgres/postgres/commit/1fd1bd871012732e3c6c482667d2f2c56f1a9395
    • [00:30:13] vacuumdb --analyze-only processes partitioned tables (Laurenz Albe, PG19) https://github.com/postgres/postgres/commit/6429e5b771dbb98aa56441677b79cdb58f6e1675
    • [00:42:38] Set pd_prune_xid on insert (Melanie Plageman, PG19) https://github.com/postgres/postgres/commit/378a216187aea1b488ce60ed07dd1ac5c14a9984


    ~~~

    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 PostgresAI


    With credit to:

    • Jessie Draws for the elephant artwork
    • Intro and outro music: our own arrangement of Apple Loops from GarageBand (royalty-free under the GarageBand licence)
    Mostra di più Mostra meno
    51 min
adbl_web_anon_alc_button_suppression_t1
Ancora nessuna recensione