Data Conference Databasea Query.Farm index
Speakers

Josef Machytka

Employers on the program

  1. 2026Data Bene1 talk
  2. 2025–2026credativ14 talks
  3. 2024–2025NetApp6 talks
Events16
Conferences11
Talks211 keynote
Years active2024–2026
Talk freshness8014 different talks in 17 · 1 circuit, 24 monthsMiles between events23,60416 in-person events · 10 countries

The year around now

Talks in the past 12 months and announced talks ahead, one row per conference, January to December. Hover a mark for the talk.

JanFebMarAprMayJunJulAugSepOctNovDecP2D2Prague PostgreSQL Developer Day (P2D2)CERN PGDayCERN PGDayNordic PGDayNordic PGDayPGConf.DEPGConf.DE (PostgreSQL Conference Germany)HOW: PostgreSQL & IvorySQL…HOW: PostgreSQL & IvorySQL Ecosystem ConferencePGConf.BEPGConf.BESwiss PGDaySwiss PGDayPGConf.AsiaPGConf.Asia
Held in the past 12 months Next 12 months Today, Nov 9, 2026

Appearances by year

201920202021202220232024202520262027
  • Prague PostgreSQL Developer Day (P2D2)
  • Swiss PGDay
  • PGConf.DE (PostgreSQL Conference Germany)
  • CERN PGDay
  • HOW: PostgreSQL & IvorySQL Ecosystem Conference
  • Nordic PGDay
  • PGConf.Asia
  • PGConf.BE
  • 3 other conferences

Talks

DateEventConferenceRoleTitleLinks
Nov 17, 2026PGConf.Asia 2026PGConf.AsiaspeakerScaling Out with Confidence: A Citus Migration Cookbook
as Data Bene (France)
Migrating a production PostgreSQL database to a distributed Citus cluster can feel like magic: you run createdistributedtable(), data moves, and you hope for…Show less

Migrating a production PostgreSQL database to a distributed Citus cluster can feel like magic: you run createdistributedtable(), data moves, and you hope for the best.

Jun 25, 2026Swiss PGDay 2026 (9th Swiss PGDay)Swiss PGDaykeynoteThe Next Generation Story of PostgreSQL: From Systems Mechanics to Experience Builders
as credativ GmbH
May 5, 2026PGConf.BE 2026PGConf.BEspeakerMigrating Legacy & Proprietary Databases to PostgreSQL
as Credativ
Apr 26, 2026HOW2026: PostgreSQL & IvorySQL Ecosystem ConferenceHOW: PostgreSQL & IvorySQL Ecosystem ConferencetalkLinux and PostgreSQL in the Multiverse of Connections
as credativ GmbH
Apr 26, 2026HOW2026: PostgreSQL & IvorySQL Ecosystem ConferenceHOW: PostgreSQL & IvorySQL Ecosystem Conferenceworkshop共享缓冲区的炼金术：平衡并发与性能 (The Alchemy of Shared Buffers)
as credativ GmbH
Apr 21, 2026PGConf.DE 2026PGConf.DE (PostgreSQL Conference Germany)speakerBeyond work_mem Myths: A Source‑Code‑Guided Tour Through PostgreSQL Memory
as credativ GmbH
Apr 21, 2026PGConf.DE 2026PGConf.DE (PostgreSQL Conference Germany)sponsored talkMigrating Legacy & Proprietary Databases to PostgreSQL with credativ-pg-migrator
as credativ
Mar 24, 2026Nordic PGDay 2026Nordic PGDayspeakerBeyond work_mem Myths: A Source‑Code‑Guided Tour Through PostgreSQL Memory Usage
as credativ GmbH

This talk is a source‑code‑guided investigation into how PostgreSQL actually allocates memory during query execution.

Feb 6, 2026CERN PGDay 2026CERN PGDayspeakerThe Alchemy of Shared Buffers: Balancing Concurrency and Performance
as credativ
SlidesVideo
Jan 27, 2026Prague PostgreSQL Developer Day 2026Prague PostgreSQL Developer Day (P2D2)workshopPgBouncer - Everything, Everywhere, All At Once about this tool
as credativ GmbH
PgBouncer is widely used in PostgreSQL environments. Like any connection pooler, it has clear strengths and limits, and it has been applied across a range of…Show less

PgBouncer is widely used in PostgreSQL environments. Like any connection pooler, it has clear strengths and limits, and it has been applied across a range of production patterns.

Oct 21, 2025PGConf.EU 2025 (15th PostgreSQL Conference Europe)PostgreSQL Conference Europe (PGConf.EU)speakerDatabase in Distress: Testing and Repairing Different Types of Database Corruption
as credativ GmbH
In recent years, I had to repair several corrupted PostgreSQL databases and have seen many different problems. In some cases corrupted data can even crash the…Show less

In recent years, I had to repair several corrupted PostgreSQL databases and have seen many different problems. In some cases corrupted data can even crash the session reading it.

SlidesVideo
Oct 15, 2025Postgres Ibiza 2025Postgres IbizaspeakerIceberg Ahead! PostgreSQL Sailing Confidently in Data Lakehouse Waters
as credativ
Sep 12, 2025PGDay Lowlands 2025PGDay LowlandsspeakerDatabase in Distress: Testing and Repairing Different Types of Database Corruption
as credativ GmbH
Jun 26, 2025Swiss PGDay 2025Swiss PGDaylightning talkBoldly Migrate to PostgreSQL with credativ-pg-migrator
as Credativ
Slides
Jun 26, 2025Swiss PGDay 2025Swiss PGDayspeakerBuilding a Data Lakehouse with PostgreSQL: Dive into Formats, Tools, Techniques, and Strategies
as Credativ
The evolution of Data Warehouses, Data Lakes, and Data Lakehouses has been marked by many buzzwords, fluctuating trends, and tools that often over-promised but…Show less

The evolution of Data Warehouses, Data Lakes, and Data Lakehouses has been marked by many buzzwords, fluctuating trends, and tools that often over-promised but under-delivered.

Slides
May 8, 2025PGConf.DE 2025PGConf.DE (PostgreSQL Conference Germany)speakerBuilding a Data Lakehouse with PostgreSQL: Dive into Formats, Tools, Techniques, and Strategies
as NetApp Open Source Services
May 8, 2025PGConf.DE 2025PGConf.DE (PostgreSQL Conference Germany)speakerPostgreSQL Connections Memory Usage: How Much, Why and When?
as NetApp Open Source Services
Jan 28, 2025Prague PostgreSQL Developer Day 2025Prague PostgreSQL Developer Day (P2D2)speakerBuilding a Data Lakehouse with PostgreSQL: Dive into Formats, Tools, Techniques, and Strategies
as NetApp

This talk shares practical insights from building a data lakehouse architecture using PostgreSQL, BigQuery, and Google Cloud Storage.

Slides
Jun 27, 2024Swiss PGDay 2024Swiss PGDaylightning talkCan PostgreSQL have a more prominent role in AI boom?
as NetApp Deutschland GmbH
Slides
Jun 27, 2024Swiss PGDay 2024Swiss PGDayspeakerGIN, BTREE_GIN and BTREE indexes on JSONB data - use cases and performance tests
as NetApp Deutschland GmbH
Talk summarizes several months long internal project testing usage of GIN and BTREE_GIN with different operator classes and also standard BTREE indexes on JSONB…Show less

Talk summarizes several months long internal project testing usage of GIN and BTREE_GIN with different operator classes and also standard BTREE indexes on JSONB data.

Slides
Jun 4, 2024Prague PostgreSQL Developer Day 2024Prague PostgreSQL Developer Day (P2D2)speakerBTREE, GIN a BTREE_GIN indexy na JSONB datech
as NetApp

V ramci interniho projektu NetApp/Credativ probehlo velmi siroke testovani btree, gin a btree_gin indexu na JSONB datech.

Slides

Frequent co-speakers

SpeakerShared eventsShared talksLast together
Bruce Momjian8—2026
Dirk Krautschick8—2026
Gülçin Yıldırım Jelinek8—2026
Pavlo Golub8—2026
Franck Pachot6—2026
Gianni Ciolli6—2026
Laurenz Albe6—2026
Luigi Nardi6—2026
Robert Treat6—2026
Tomas Vondra6—2026
Ants Aasma5—2026
Chris Ellis5—2026
Teresa Lopes5—2026
Alexander Kukushkin4—2026
Álvaro Herrera4—2026

Speakers with the same name are merged into one entry, so this page may combine more than one person. Affiliations are shown as each conference listed them.