The Swiss PostgreSQL Conference

Swiss PGDay 2024

This conference is all about PostgreSQL - the world's most advanced open source database. Take the opportunity to meet with other people interested in PostgreSQL in Switzerland.

This year's Swiss PGDay will last two days with two tracks of presentations, in English and German. At least one of the presentations will be in English at all times. At the end of the first day (Thursday), all participants are invited to a social event to enjoy networking and personal exchange. The conference is suitable for everyone, from novices to experts and from back office staff to decision makers.

There will also be a poster exhibition and lightning talks where participants can share their projects, ideas and use cases.

Do you have any questions or comments? Please email us at:

We are looking forward to welcome you!
The organizing committee

The Swiss PGDay is organized by the Swiss PostgreSQL Users Group (SwissPUG)


We would love to hear about your project, your experiences (good or mixed), your favorite extensions, or any other interesting topic around PostgreSQL and its community.

Poster Exhibition

If you don't want to give a talk or have a topic that is smaller in scale, we offer another platform for presentations: You can create a poster that will be displayed in the exhibition area and you will have the opportunity to explain your work in the lightning talk session. Topics for posters can include scientific work related to databases, you can present your favourite software projects, tools, blog posts or your own success stories and use cases. Please note that commercial advertisements, company or product presentations are not allowed on posters. For these, you are free to sponsor the event or use the job board.

To participate in the poster exhibition, please email the topic of your poster with a short abstract to by May 15, 2024. If accepted, please send your poster (same email address) in high-resolution PDF format by June 3, 2024, and indicate whether you will be able to bring a physical copy. If you need assistance with printing, we can provide a limited service. All displayed posters will be listed on the homepage and their authors will be invited to present their work in the poster session. Depending on the amount of feedback, we may turn the poster session into lightning talks.

Lightning talks

There will be a lightning talk session on the second day of the conference. You can't submit them here. Submissions for lightning talks can be made at the event, but you can also prepare something in advance, especially if you want to present your poster.

Call for Speakers (Closed)

  • A session lasts 50 minutes including questions.
  • Tell us about your proposal.
    1. A title and an abstract of about 1500 characters.
    2. A short text about you and your relation to PostgreSQL.
    3. A picture of yourself.
    4. Please indicate the language of your talk (English or German). You may submit the same talk in both languages if you wish.
    5. Target audience / category of your talk: General, DBA, Developers
  • Fill out the form on the right and submit your proposal by April 8, 2024, 23:59 CEST. We will notify all submitters of the outcome of the selection process by April 19, 2024.
  • Please note that proposals from speakers affiliated with companies sponsoring the event are not privileged and will be treated equally.
  • Confirmed speakers will get free access to the conference and are invited to the speaker's dinner the night before the conference.
  • For a description of the talk selection process and program committee, see the About tab.

The Call for Speakers is closed since 2024-04-08.

The registrations is closed since 2024-06-27.

English Sessions German Sessions
Thursday, 27.06.2024
Time Room 3.008 Room 3.010
08:15 - 09:00 Registration / Coffee - Cafeteria in building 8
09:00 - 09:10 Welcome: Stefan Keller (OST) - Room 3.008
Stefan Keller

Stefan Keller

Professor for information systems, founder and head of Geometa Labs. Keller is a member of the Swiss PGDay board and involved in various open source projects such as PostGIS and QGIS and open data initiatives, e.g. OpenStreetMap. Besides, he is generally interested in geographic data and their visualization as well as in the the integration of open source and proprietary solutions (e.g. QGIS and ArcGIS).

Professor für Informationssysteme sowie Leiter und Gründer des Geometa Labs. Ist u.a. Mitglied des Swiss PGDay OK und engagiert in verschiedenen Open Source Projekten (z.B. PostGIS und QGIS) und Open Data (v.a. OpenStreetMap). Zudem interessieren ihn allgemein Geodaten und Geovisualisierung sowie die Integration von Open Source und proprietärer Software (z.B. QGIS und ArcGIS).

09:10 - 10:00 Keynote: Tomas Vondra, The past and the future of the Postgres community - Room 3.008
Tomas Vondra

Tomas Vondra, EDB

The past and the future of the Postgres community

Let's talk about how the PostgreSQL community came to be - a little bit of history about where it comes from, where it may be heading. This history partially determines why the community is structured and organized the way it does. I want to talk about some basic strengths and weaknesses.
The goal of this talk is to give a little bit of context to users/engineers using the product but may not be very familiar with the non-technical context.

Target audience: General, Level: Beginner

I'm a long-term PostgreSQL contributor & committer, focusing on performance and query planning stuff. I also do community stuff - help organizing events and so on.

10:00 - 10:20 Break - Cafeteria in building 8
10:20 - 11:10 Gulcin Yildirim Jelinek, Bringing vectors to Postgres with pgvector
Gulcin Yildirim Jelinek

Gulcin Yildirim Jelinek, EDB

Bringing vectors to Postgres with pgvector

Postgres does not yet have native vector capabilities (as of Postgres 16) and pgvector is designed to fill this gap. You can store your vector data alongside the rest of your data in Postgres and do vector similarity search while still utilizing all the great features Postgres provides.
The pgvector extension integrates seamlessly with Postgres – allowing users to leverage its capabilities within their existing database infrastructure. This simplifies the deployment and management of AI applications, as there's no need for separate data stores or complex data transfer processes.
In this talk, we will learn how to generate and store vector embeddings in Postgres. We will discuss indexing (IVFFlat, HNSW) the embedding data and illustrate how to run a similarity query on our embeddings.

Target audience: Developer, Level: Intermediate

Gülçin started working with Postgres at a startup company in 2012 and was amazed at how good Postgres really is! Over the years, she actively contributed to the PostgreSQL community by organizing conferences, delivering talks, and engaging as a dedicated community member. In recognition of her commitment, Gülçin was elected to the PostgreSQL Europe Board in 2017. Fueled by a passion for PostgreSQL Automation and Cloud Technologies, Gülçin assumed the role of Cloud Services Manager and spearheaded Cloud Development at 2ndQuadrant, which was later acquired by EDB in 2020. Committed to fostering diversity and inclusion, she is an integral part of Postgres Women, advocating for increased representation of women in technical communities. Currently serving as a Staff Engineer at EDB, Gülçin continues to explore her interests in PostgreSQL, leveraging her expertise in Cloud Technologies. In addition to her engineering work, she recently launched a podcast, "The Builders: A Postgres Podcast"

Laurenz Albe, Sicherheitsattacken auf PostgreSQL
Laurenz Albe

Laurenz Albe, CYBERTEC

Sicherheitsattacken auf PostgreSQL

In diesem Vortrag betrachte ich verschiedene Methoden, um unter Ausnützung unsicherer Konfiguration oder unsicherer Objektdefinitionen Schaden zu verursachen:
- Verfügbarkeit beeinträchtigen ("denial of service")
- Zugang zur Datenbank erschleichen
- Zugriff auf verbotene Daten erschleichen
- Superuser werden
Wer die Gefahren kennt, kann sich davor schützen!

Target audience: General, Level: Intermediate

PostgreSQL contributor, senior database engineer and maintainer of oracle_fdw and pgreplay

11:20 - 12:10 Chris Engelbert, PostgreSQL on Kubernetes: Dos and Don'ts

Chris Engelbert, simplyblock GmbH

PostgreSQL on Kubernetes: Dos and Don'ts

Running databases in containers has been the biggest anti-pattern of the last decade. The world, however, moves on and stateful container workloads become more common, and so do databases in Kubernetes. People love the additional convenience when it comes to deployment, scalability, and operation.
With PostgreSQL on its way to become the world’s most beloved database, there certainly are quite some things to keep in mind when running it on k8s. Let us evaluate the important Dos and especially the Don’ts.

Target audience: General, Level: Intermediate

Christoph Engelbert is a developer by heart, with strong bonds to the open source world. As a seasoned speaker on international conferences, he loves to share his experience and ideas, especially in the areas of scalable system architectures and back-end technologies, as well as all things programming languages.

Nicolas Fränkel, Die API eines armen Mannes mit dem Ökosystem von PostgreSQL
Nicolas Fränkel

Nicolas Fränkel,

Die API eines armen Mannes mit dem Ökosystem von PostgreSQL
(A poor man's API with PostgreSQL's ecosystem)

Die Entwicklung einer vollwertigen API braucht Ressourcen, sowohl Zeit als auch Geld. Ihr müsst über das Modell, das Design, die REST-Grundsätze usw. nachdenken, ohne eine einzige Zeile Code zu schreiben. Meistens weiß man nicht, ob es sich lohnt: Man möchte ein Minimum Viable Product anbieten und von dort aus iterieren.
In diesem Vortrag möchte ich euch zeigen, wie ihr das mit PostgreSQL, PostgREST und Apache APISIX erreichen könnt.

Target audience: Developer, Level: Beginner

Developer Advocate with 15+ years experience consulting for many different customers, in a wide range of contexts (such as telecoms, banking, insurances, large retail and public sector). Usually working on Java/Java EE and Spring technologies, but with focused interests like Rich Internet Applications, Testing, CI/CD and DevOps. Also double as a trainer and triples as a book author.

12:10 - 13:20 Lunch - Mensa in building 4
13:20 - 14:10 Maurizio De Giorgi, Ismael Posada Trobo, Solving PostgreSQL connection scalability issues: Insights from CERN’s GitLab Service

Maurizio De Giorgi, Ismael Posada Trobo, CERN

Solving PostgreSQL connection scalability issues: Insights from CERN’s GitLab Service

A lively PostgreSQL database, few hundred connections, a significant fraction idle. At times connections are increasing rapidly, back-end processes suddenly crash or experience prolonged hangs. This is how the PostgreSQL connection scalability issues showed up at CERN GitLab service.
GitLab is a self-service code hosting application based on Git, that provides collaboration and code review features, used by the High Energy Physics and Experiments community since 2012.
In 2022, CERN’s on-prem setup, featuring open-source technologies like Ceph File System & Object Storage and PostgreSQL, underwent refactoring to use Kubernetes, embracing a Cloud Hybrid Architecture approach.
Eager to share the outcome of their experience and inspire others facing similar challenges, CERN’s experts will guide you through the process of diagnosing and addressing connections scalability issues of data intensive application, especially when deployed with K8s.

Target audience: General, Level: Intermediate

Maurizio De Giorgi: I am currently working as Senior Database Engineer in the DataBase On Demand team of the IT-DA group at CERN. I have 25+ years experience mostly as IT consultant in different roles, industry, markets and more than 15+ experience in RDBMS development and administration spanning across Data Warehousing, Business Intelligence, ETL and Application Integration. I am an avid technologist always carefully looking at new technology, paradigms and trends and the best way to apply them within the projects and the organizations where I am working. Building on my EAI/BI/DWH experience in the last few years I have been on a journey to expand my knowledge around data intensive applications, gaining insight into data science, machine learning and AI, new alternative data store technology like NoSQL, Graph, columnar and in-memory databases, virtualized and cloud computing, stream and event based processing.

Dirk Krautschick, Warum sich PostgreSQL-Fans auch für Kafka und Debezium interessieren sollten?
Dirk Krautschick

Dirk Krautschick, Aiven

Warum sich PostgreSQL-Fans auch für Kafka und Debezium interessieren sollten?
(Why PostgreSQL people should really care about Kafka and Debezium?)

Im Bereich Data Management läutete das Zusammenspiel von Postgres, Kafka und Debezium bereits eine neue Ära von Möglichkeiten ein. Dieser Vortrag soll eine Übersicht darüber bieten, warum Kafka und Debezium nicht nur als eine weitere Technologie sondern auch als ergänzendes Werkzeug für PostgreSQL Enthusiasten eine gewisse Aufmerksamkeit verdient.
Die Diskussion beginnt damit, die Stärken von Kafka als robuste Event-Streaming-Plattform und Debezium als Dreh- und Angelpunkt für die Erfassung von Änderungsdaten (CDC) darzustellen. Zusätzlich die Integration dieser Technologien erklärt, wie ihre Synergie die Datenverbreitung und -synchronisierung in Echtzeit erleichtert.
Während des gesamten Vortrags werden wir auf die Vorteile eingehen, die sich ergeben, wenn Postgres-Enthusiasten Kafka und Debezium nutzen, von der Erschließung von Datenbankänderungen bis hin zur Stärkung der Datenkonsistenz über verteilte Systeme hinweg. Praktische Einblicke und Beispiele aus der Praxis werden die potenziellen Fallstricke dieser Integration verdeutlichen, gepaart mit Strategien zur Bewältigung von den entsprechenden Herausforderungen.
Ziel dieses Vortrags ist es, aus Sicht eines PostgreSQL DBAs die symbiotische Beziehung zwischen Postgres, Kafka und Debezium als Schlüssel zur Erschließung des vollen Potenzials des eigenen Datenumfeld einfach und praxisnah vorzustellen.

Target audience: General, Level: Intermediate

Dirk Krautchick has been working as a solution architect at Aiven since November 2023. As a qualified computer scientist, he was the responsible database administrator and quality support engineer for a manufacturer of optimization software in the aviation sector for 9 years, where he built up his know-how in operating PostgreSQL or Oracle databases and application servers. In 2017 he decided to use his fascination for database technologies and his skills as a consultant in - among others - the financial and energy sector to continually deepen them. During this dynamic times, the enthusiasm and fascination for open source from the student time returned and became priority for him. Without losing the acquired Oracle database know-how PostgreSQL as a primary topic was expanded in terms of content, teams were recruited, customers were trained and targeted projects were carried out. In addition to many architectural consulting and performance tuning projects also migrations from Oracle to PostgreSQL are often the content of such projects. In order to implement the open source and PostgreSQL strategy even more aggressively, without losing focus on the technology a move technical sales in 2022 was inevitable - first as a sales engineer at EnterpriseDB and now as a solution architect at Aiven.

14:20 - 15:10 Josef Machytka, GIN, BTREE_GIN and BTREE indexes on JSONB data - use cases and performance tests

Josef Machytka, NetApp Deutschland GmbH

GIN, BTREE_GIN and BTREE indexes on JSONB data - use cases and performance tests

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. Tested on several real life datasets with total size of several dozens of GBs. Objective of this project was to gather relevant experience to be able to help our customers with their problems, because majority of articles on web about JSONB data in PostgreSQL show only very basic trivial examples without any reasonable value for developers solving multiple performance issues related to JSONB data.

Target audience: Developer, Level: Advanced

30+ years of experiences with different databases, PostgreSQL 10+ years
See my LinkedIn profile -

Andreas Geppert, Verwaltung grosser Datenbanklandschaften in Multi-Cloud-DBaaS-Umgebungen
Andreas Geppert

Andreas Geppert, Zürcher Kantonalbank

Verwaltung grosser Datenbanklandschaften in Multi-Cloud-DBaaS-Umgebungen
(Managing Large Database Landscapes in Multi-Cloud DBaaS Environments)

Grosse Unternehmen haben typischerweise Hunderte von Applikationen mit Datenbankkomponenten. Die Datenbanken sind oft über Clouds unterschiedlicher Anbieter und das eigene Rechenzentrum verteilt.
Datenbanken müssen in das Ökosystem der Unternehmung integriert und gemäss der Sicherheitsvorgaben gehärtet werden. Gleichzeitig sollen sie Self-Service der Benutzer und Entwickler erlauben, um deren Autonomie und Agilität zu unterstützen.
Wir zeigen, wie eine solche Multi-Cloud-fähige Database-as-a-Service-Plattform entworfen und betrieben werden kann, mit Postgres als dem hauptsächlichen Beispiel. Ausserdem schildern wir Postgres-spezifische Herausforderungen und mögliche Lösungen beim Bau solcher Plattformen.

Target audience: General, Level: Intermediate

Data platform architect and long-term Postgres user.

15:10 - 15:30 Break - Cafeteria in building 8
15:30 - 16:20 Vik Fearing, Window Functions Are Easier and More Powerful Than You Think
Vik Fearing

Vik Fearing, EDB

Window Functions Are Easier and More Powerful Than You Think

In some circles, window functions are considered "Advanced SQL". In this presentation, I will show you how easy and powerful they actually are.
We will start with the basic concept of partitions and orderings, then move on to simple frame specifications. Then we will look at more intricate frames and exclusion options, and how they can simplify quite a bit of application processing.
Finally, we will look at extensions that provide additional window functions to those defined by the SQL Standard, and take a peek at what the future might bring.

Target audience: Developer, Level: Beginner

Vik Fearing is a PostgreSQL expert at EDB, and lives in France.
He has been in the PostgreSQL community since 2008 and is the founder and co-organizer of pgDay Paris, co-organizer of PostgreSQL Conference Europe, and a volunteer and speaker at many other conferences around the world.
He is also a moderator for several of the PostgreSQL mailing lists as well as an IRC channel operator for #postgresql and #postgresqlfr.
He is an inaugural member of the PostgreSQL Code of Conduct Committee and part of the team behind the @PostgreSQL Twitter account. In his spare time, he likes to write minor patches to the PostgreSQL codebase.

Patrick Stählin, Wie wir einen Datenkorruptions-Bug mit der Hilfe der Community gefunden und gefixt haben
Patrick Stählin

Patrick Stählin, Aiven

Wie wir einen Datenkorruptions-Bug mit der Hilfe der Community gefunden und gefixt haben
(Finding and fixing a data-corruption bug with the help of the community)

Als wir am Anfang dieses Jahres mit dem ausrollen von PostgreSQL 16 begonnen haben, sahen wir, dass ein kleiner Teil der Services (0.15%) plötzlich eine Datenkorruption anzeigten. Wir konnten das Problem zum Glück auf einen Fehler in der FSM (free space map) zurückführen. Dies lässt sich einigermassen einfach und ohne grosse Downtime beheben, braucht aber manuelle intervention. Dieser Vortrag beschreibt wie wir dank der Community den Bug gefunden, umgehen und dann fixen konnten. Wir werden uns genauer ansehen, was genau geschieht wenn PG ein Tupel auf die Disk schreiben will und was wir nun gemacht haben um den Bug zu fixen. Wir werden uns ebenfalls anschauen wie wir diese Fehler in der Zukunft ohne grosse Downtime oder mit VACUUM FULL lösen können. Dazu haben wir eine neue Funktion in pg_freespacemap vorgeschlagen.

Target audience: Beginner, Level: General

Beschäftigt sich seit 2003 mit PostgreSQL, arbeitet im PostgreSQL-Team von Aiven.

16:30 - 17:20 Pavlo Golub, When it all GOes right
Pavlo Golub

Pavlo Golub, CYBERTEC

When it all GOes right

This talk covers how to use PostgreSQL together with the Golang (Go) programming language. I will describe what drivers and tools are available and which to use nowadays.
In this talk I will cover what design choices of Go can help you to build robust programs. But also, we will reveal some parts of the language and drivers that can cause obstacles and what routines to apply to avoid risks.
We will try to build the simplest cross-platform application in Go fully covered by tests and ready for CI/CD using GitHub Actions as an example

Target audience: Developer, Level: Beginner

I am a PostgreSQL contributor and co-organizer of PostgreSQL Ukraine User Group, as well as Senior Developer and Expert at Cybertec. I am the author of pgxmock library and scheduling solution for PostgreSQL written in Go called pg_timetable. Also I am a maintainer of pgwatch2 monitoring solution.

Marion Baumgartner, Geodaten-Management mit PostGIS
Marion Baumgartner

Marion Baumgartner, Camptocamp SA

Geodaten-Management mit PostGIS
(Organizing Spatial Data with PostGIS)

In der Welt der Geographischen Informationssysteme (GIS) wird die PostgreSQL-Datenbank in Kombination mit PostGIS häufig zur Speicherung räumlicher Daten verwendet. Die PostGIS-Erweiterung, die in den letzten 23 Jahren von einer grossen wachsenden Gemeinschaft gepflegt und erweitert wurde, macht PostgreSQL zu einer räumlichen Datenbank. Im Wesentlichen ermöglicht PostGIS räumliche Daten in PostgreSQL zu speichern und zu nutzen.
Dieser Vortrag beschäftigt sich mit dem zentralen Teil, für den PostGIS verwendet wird: die Geodaten. Wir werden unterschiedliche Möglichkeiten aufzeigen, um räumliche Daten in einer performanten Art und Weise mit PostGIS zu speichern. Eine wichtige Rolle spielt hierbei sowohl die effiziente Organisation über das Datenmodell, als auch die Verfügbarkeit für Datenexporte und Datenabfragen von häufig verwendeten GIS-Clients (z.B. QGIS oder MapServer).
Anhand eines grossen laufenden Projektes des Schweizer Bundesamtes für Landestopografie (Swisstopo) werden wir verschiedene gängige Datenmodelle illustrieren und deren Vor- und Nachteile diskutieren. Einige dieser Beispiele bestehen aus sehr komplexen Datensätzen mit einer großen Anzahl an geographischen Objekten. Die Art, wie die Daten gespeichert werden, ist insbesondere für eine performante Visualisierung entscheidend, was wir an dem Beispiel der nationalen Geodateninfrastruktur zeigen werden.

Target audience: General, Level: Beginner

I am a software developer and work for the company Camptocamp, developing GIS open source software. Besides development, I do a lot of data integration with geo-spacial data where PostgreSQL and PostGIS are my good companions.

18:30 - Social Event - Bottéga Rapperswil, 18:00 open, 18:45 start of the event

Friday, 28.06.2024
Time Room 3.008 Room 3.010
08:30 - 09:00 Registration / Coffee - Cafeteria in building 8
09:00 - 09:40 Keynote: Stefan Keller, PostgreSQL: A Reliable and Extensible Multi-Model SQL Database - Room 3.008
Stefan Keller

Stefan Keller, OST Ostschweizer Fachhochschule

PostgreSQL: A Reliable and Extensible Multi-Model SQL Database

The term "multi-model" often refers to the use of specialized "purpose-built" NoSQL databases designed for specific data models. However, the "general-purpose" database PostgreSQL challenges this notion by integrating a wide range of NoSQL features into its SQL-based system, making it a versatile multi-model database. This talk will explore PostgreSQL's ability to handle a variety of NoSQL data types, including arrays, key-values, documents (including XML and JSON), and graph data types. This talk will highlight PostgreSQL's suitability as a unified platform for diverse data management, combining the flexibility of NoSQL with the robustness of a fully transactional relational database.

Target audience: General, Level: Intermediate

Stefan Keller is Full Professor and Head of the Institute for Software at the OST Campus Rapperswil, as well as member of the program committee of the Swiss PGDay.

09:40 - 10:00 Break - Cafeteria in building 8
10:00 - 10:50 Matt Cornillon, How I found my Pokémon cards thanks to Postgres: an AI journey
Matt Cornillon

Matt Cornillon, Aiven

How I found my Pokémon cards thanks to Postgres: an AI journey

When it comes to data storage and retrieval, PostgreSQL offers more than just traditional tabular data management. This session explores the exciting potential of combining PostgreSQL with AI technologies, illustrated through a relatable example—finding and identifying specific Pokémon cards. While Pokémon cards serve as a fun and engaging example, the techniques presented have wide applications in various data-driven domains such as object detection and autonomous driving.
We'll begin with an overview of the machine learning pipeline for image recognition where we’ll discuss how a Convolutional Neural Network (CNN) can be trained to recognize Pokémon cards, generating embeddings that capture essential visual features.
Our main focus will be on pgvector, an extension for PostgreSQL dedicated for managing vector data like embeddings efficiently. We will cover how to store such embeddings, set up indexes for quick retrieval, and conduct similarity searches right within your PostgreSQL database, and at scale!
If you're intrigued by the integration of AI with PostgreSQL for real-time, high-performance data operations, this session will offer both theory and hands-on practices to get you started.

Target audience: Developer, Level: Intermediate

Passionate about databases for as long as I can remember, Postgres and Open Source hold a special place in my heart.
After spending 10 years working in large retail companies as a database engineer, I now support developers and DBAs who choose Open Source with Aiven.

Luigi Nardi, Lesson learned from autotuning PostgreSQL

Luigi Nardi, DBtune

Lesson learned from autotuning PostgreSQL

We'll explore the intricate world of PostgreSQL parameter tuning, where the database management system reveals a multitude of configurable parameters that govern its runtime behavior. As the system evolves, the increasing number, the non-linear relationship and the complexity of these parameters highlight the importance of their correct configuration in optimizing application performance and cloud resource utilization.
This talk delves into various tuning approaches. We'll start with the traditional, meticulous method of manual tuning, relying on expert analysis of metrics like query response times and resource usage. We'll then explore heuristic-based tools like PGTune and PostgreSQL Configurator, offering one-size-fits-all solutions. Finally, we'll set our sights on the future: auto-tuning with machine learning. We'll showcase how these more sophisticated methods can be customized to a specific workload and machine resources.
We'll highlight the challenges and the advantages of transforming PostgreSQL into a more self-driving database management system. We'll share valuable lessons learned while developing DBtune, a machine-learning-powered optimization service designed to unlock the full potential of your PostgreSQL instance.

Target audience: Developer, Level: Intermediate

Luigi Nardi is the founder and CEO of DBtune (, a leading company driving advancements in AI, database systems, and cloud computing. Previously an associate professor of machine learning at Lund University and a research staff at Stanford University, Luigi's expertise centers around black-box optimization theory and practice. Luigi's journey includes a post-doctoral position at Imperial College London and a role as a software engineer at Murex S.A.S., following his Ph.D. program in applied mathematics at Université Pierre et Marie Curie in Paris in 2011.

11:00 - 11:50 Kranthi Kiran Burada, Selective Column Replication in PostgreSQL
Kranthi Kiran Burada

Kranthi Kiran Burada, Amazon Web Services

Selective Column Replication in PostgreSQL

Database replication is fundamental for ensuring data availability, scalability, and disaster recovery in modern distributed systems. PostgreSQL, a widely-used open-source relational database management system, offers diverse replication methods for synchronizing data across multiple nodes. This session delves into selective column replication, a technique enabling the replication of specific table columns rather than the entire table, within PostgreSQL.
Exploring the rationale behind selective column replication, we examine its benefits, challenges, and implementation strategies within the PostgreSQL ecosystem. This includes discussions on enhancing database performance, reducing network bandwidth consumption, and facilitating efficient data synchronization in complex distributed environments.
Furthermore, practical use cases are analyzed to demonstrate the significant advantages of selective column replication. By focusing on performance optimization, we aim to offer insights into leveraging this technique as a powerful tool for refining PostgreSQL database replication strategies.
With a comprehensive exploration, this session aims to contribute to the understanding and utilization of selective column replication, providing valuable guidance for database administrators and developers seeking to optimize their PostgreSQL deployments.

Target audience: DBA, Level: Intermediate

My name is Kranthi Kiran Burada, and I've been serving as a Database Migration Specialist at AWS for the past 6 years, accumulating a total of 11 years of experience in the field. My primary focus lies in assisting customers with migrating from commercial databases to open-source databases like PostgreSQL.
Over the last 8 years, I've been deeply involved with PostgreSQL, aiding clients in performance optimization, database design, troubleshooting, and offering best practices during migrations from Oracle/SQL Server to PostgreSQL.
Additionally, I have the privilege of being an AWS Certification Subject Matter Expert (SME), contributing to the development of all AWS associate certifications and the AWS Database Specialty Certification.
Beyond my professional endeavours, I'm passionate about exploring new destinations and indulging in games like badminton and cricket during my leisure time.

Franck Pachot, Indexing Beyond Columns: Expressions, Text Fragments, JSON Attributes, and Top-N Queries
Franck Pachot

Franck Pachot, Yugabyte

Indexing Beyond Columns: Expressions, Text Fragments, JSON Attributes, and Top-N Queries

If you create your indexes by looking at the columns of the tables, it's time to explore a different approach. Instead of simply indexing one or more columns that seem useful for queries, look at the values and ranges of values you will be searching for, and in what order you want to sort the result. While in a heavily normalized schema, this typically translates to one or more columns, modern applications often require searching criteria within a fragment of text, an attribute in a JSON structure, or maximum values across multiple rows. In this session, we will explore several examples (Expressions, text fragments, JSON attributes, and Top-N queries) on PostgreSQL (Expression index, Inverted index, Partial index, Covering index, Order preserving joins) and evaluate the efficiency of indexing by examining the execution plan.

Target audience: General, Level: Beginner

Developer Advocate for YugabyteDB, distributed SQL database using PostgreSQL query layer. Franck has a passion for learning and sharing in blog posts (, articles, conferences, twitter (@FranckPachot) and tech communities (AWS Data Hero and Oracle ACE Director)

11:50 - 13:00 Lunch - Mensa in building 4
13:00 - 13:50 Kanhaiya Lal, Belma Canik, Beyond Keywords: AI-powered Text Search with pgvector for PostgreSQL
Kanhaiya Lal

Kanhaiya Lal, Belma Canik, Amazon Web Services

Beyond Keywords: AI-powered Text Search with pgvector for PostgreSQL

Current search algorithms struggle with huge and complex datasets. This talk delves into a revolutionary approach: semantic search with pgvector for PostgreSQL. pgvector makes use of vector embeddings, which capture the meaning behind words rather than their exact presence. This allows searches to comprehend the purpose of your query, producing more relevant results. I'll look at why PostgreSQL, along with pgvector, is an effective foundation for developing next-generation search engines. You'll also learn how to develop these semantic representations and combine them with PostgreSQL to provide a really transformational search experience.

Target audience: General, Level: Advanced

Kanhaiya Lal: I am Kanhaiya Lal, a Senior Specialist Database - Technical Account Manager at Amazon Web Services (AWS) with 19 years of experience in open-source and commercial databases. Kanhaiya Lal is an AWS Certified Speaker who has given multiple public talks about open-source databases. Kanhaiya Lal enjoys developing PostgreSQL apps that make use of all of PostgreSQL's great capabilities. Kanhaiya Lal worked on mission-critical platforms utilizing various PostgreSQL versions. Kanhaiya Lal is a PostgreSQL architect specializing in autovacuum, streaming, performance optimization, workload deep-dive, and providing recommendations.

Daniel Westermann, PostgreSQL 17 highlight: In-core inkrementelle Backups, Backup Ketten und einen Haufen Details
Daniel Westermann

Daniel Westermann, dbi services

PostgreSQL 17 highlight: In-core inkrementelle Backups, Backup Ketten und einen Haufen Details

Von Vielen schon lange gewünscht: Ab Version 17 wird PostgreSQL aller Wahrscheinlichkeit nach in der Lage sein, inkrementelle Backups zu erstellen, und diese natürlich auch wieder hierzustellen. In diesem Vortrag werden wir uns ansehen, wie inkrementelle Backups funktionieren, was es mit Backup Ketten auf sich hat und wie sich das in einem Backup-Konzept zusammenfügen liesse. Das werden wir uns alles auf der Konsole mit Bespielen erarbeiten, ohne Folien. Natürlich wird es aber einen Foliensatz geben, der das alles Schritt für Schritt erklärt, damit es dann von jedem nachvollzogen werden kann.

Target audience: DBA, Level: Beginner

Daniel Westermann is Principal Consultant and Technology Leader Open Infrastructure at dbi services. He has more than 15 years of experience in management, engineering and optimization of databases and infrastructures, especially on PostgreSQL. Since the beginning of his career, he has specialized in Oracle Technologies and is Oracle Certified Professional 12c and Oracle Certified Expert RAC/GridInfra. Over time, Daniel has become increasingly interested in open source technologies, becoming “Technology Leader Open Infrastructure” and PostgreSQL expert. Based on community or EnterpriseDB tools, he develops and installs complex high available solutions with PostgreSQL. He is a regular speaker at PostgreSQL conferences in Switzerland and Europe. Today Daniel is also supporting our customers on AWS services such as AWS RDS, database migrations into the cloud, EC2 and automated infrastructure management with AWS SSM (System Manager). He is a certified AWS Solutions Architect Professional. Prior to dbi services, Daniel was Management System Engineer at LC SYSTEMS-Engineering AG in Basel. Before that, he worked as Oracle Developper & Project Manager at Delta Energy Solutions AG in Basel (today Powel AG). Daniel holds a diploma in Business Informatics (DHBW, Germany). His branch-related experience mainly covers the pharma industry, the financial sector, energy, lottery and telecommunications.

14:00 - 14:50 Gabriele Bartolini, Unleashing the Power of PostgreSQL in Kubernetes
Gabriele Bartolini

Gabriele Bartolini, EDB

Unleashing the Power of PostgreSQL in Kubernetes

In a landscape where Database Administrators (DBAs) often find themselves compelled to adopt Kubernetes with little - if any - involvement in the decision-making process, the integration of PostgreSQL databases into these environments becomes a pivotal concern.
This presentation will delve into the challenges faced by DBAs in this scenario and offer practical solutions, focusing on CloudNativePG, the rapidly expanding open-source operator for Postgres workloads, originally developed by EDB and now thriving under the governance of a vendor-neutral community.
Join me, a co-founder and maintainer of CloudNativePG, on an enlightening journey through a comprehensive demonstration. We'll explore every facet of deploying Postgres within Kubernetes, addressing key aspects ranging from the initial setup to simulating failover scenarios.
This session aims to empower DBAs with practical insights into seamlessly integrating PostgreSQL with Kubernetes and navigating the challenges imposed by external management decisions.
Additionally, it will shed light on how CloudNativePG, in collaboration with Kubernetes, reshapes and elevates the role of the DBA.
By leveraging a fully open-source stack comprising Kubernetes, PostgreSQL, and CloudNativePG, attendees will gain a profound understanding of the transformative impact on their daily responsibilities and the overall efficiency of database management within Cloud Native environments. This represents a unique opportunity for DBAs to proactively engage and contribute to the decision-making processes surrounding database technology in the Cloud Native era.

Target audience: General, Level: Intermediate

Gabriele, an open-source programmer and entrepreneur with a Statistics degree from the University of Florence, has been contributing to PostgreSQL since the early 2000s. A key figure in fostering lean and DevOps culture at 2ndQuadrant, he now leads the Cloud Native initiative at EDB. Gabriele is a co-founder of CloudNativePG and Barman open-source projects, showcasing his dedication to advancing technology and collaborative development.

Kai Wagner, Verschlossen und gesichert: PostgreSQL-Verschlüsselung entmystifiziert
Kai Wagner

Kai Wagner, Percona

Verschlossen und gesichert: PostgreSQL-Verschlüsselung entmystifiziert
(Locked & Secured: PostgreSQL Encryption Demystified)

Verschlüsselung und somit Sicherheit von Daten ist heutzutage wichtiger denn je. In PostgreSQL selbst, habe ich nur limitierte Optionen. Doch welche Möglichkeiten habe ich PostgreSQL zu verschlüsseln? Es gibt verschiedene Techniken von Secure Sockets Layer (SSL) und Transport Layer Security (TLS), für Client Anwendungen, bis zu Transparent Data Encryption (TDE) bei der die Daten verschlüsselt gespeichert werden.
Du willst lernen, wie TDE deine gespeicherten Daten in eine unlesbare Form verwandelt, es sei denn, du hast die richtigen Schlüssel? Dich interessiert ebenfalls wie SSL/TLS deine Daten während der Übertragung schützt und unbefugten Zugriff verhindert? Dann ist dieser Talk genau der richtige für dich.
Getreu meinem Motto:"Encryption is not a crime"

Target audience: General, Level: Beginner

I'm Kai, and I work as a Sr. Engineering Manager for PostgreSQL at Percona. I'm passionate about open source, free speech, and transparent communication. Actively engaged and a public speaker for many open source projects such as ceph, openATTIC, Linux Kernel and now PostgreSQL. Whenever I'm not sitting in front of my computer, I either spend time with the family or work on our house.

14:50 - 15:20 Break & Poster Presentation - Cafeteria in building 8

During the coffee break, you will find the authors next to their posters to discuss the topics illustrated.

  • Andrea Minetti, Box Framework
  • Stefan Keller, 5 Things You Wouldn't Have Thought Databases Could Do!
  • Stefan Keller, DuckDB and PostgreSQL
  • Stefan Keller, PostgreSQL & Pivot
15:20 - 16:10 Lightning Talks: Possibly you - Room 3.008

Lightning Talks
Moderation:Vik Fearing

In this session, several people are given the opportunity to give a short presentation of a few minutes. These can be on any topic, including PostgreSQL, but excluding commercial advertising. We are happy to hear about new ideas, work in progress, calls for papers, or notices of upcoming changes.

If you would like to participate, please add your name to list at the registration desk. If you want to present slides, these need to be mailed as a PDF to before 14:00.

  • Johannes Graën, Pattern matching in the Unicode space
  • Franck Pachot, YUGABYTEDB: A Postgres fork to scale horizontally
  • Kai Wagner, TDE is coming in…
  • Gianni Ciolli, The Well-Tempered Elephant
  • Andreas Gruhler, PostgreSQL in the snow - send the right athletes to the finals
  • Pavlo Golub, A Song of Ice and Fire
  • Josef Machytka, Can PostgreSQL have a more prominent role in AI boom?
  • Dickson Guedes, Visualizing Postgres buffers
16:10 - 16:30 Closing: Stefan Keller (OST) - Room 3.008
Stefan Keller

Stefan Keller

Professor for information systems, founder and head of Geometa Labs. Keller is a member of the Swiss PGDay board and involved in various open source projects such as PostGIS and QGIS and open data initiatives, e.g. OpenStreetMap. Besides, he is generally interested in geographic data and their visualization as well as in the the integration of open source and proprietary solutions (e.g. QGIS and ArcGIS).

Professor für Informationssysteme sowie Leiter und Gründer des Geometa Labs. Ist u.a. Mitglied des Swiss PGDay OK und engagiert in verschiedenen Open Source Projekten (z.B. PostGIS und QGIS) und Open Data (v.a. OpenStreetMap). Zudem interessieren ihn allgemein Geodaten und Geovisualisierung sowie die Integration von Open Source und proprietärer Software (z.B. QGIS und ArcGIS).


all times are in CEST / UTC+2.
The schedule is subject to change.

Swiss PGDay Sponsors 2024

Swiss PGDay wouldn't be possible without support from our generous sponsors. Thank you all very much!




Interested in joining these companies in their support for the Swiss PGDay? See our sponsorship opportunities

Swiss PGDay Sponsoring 2024

The Swiss PGDay offers companies and organizations a unique annual opportunity to reach PostgreSQL professionals, community members and prospects from Switzerland and neighboring regions. If you are interested in sponsoring the conference, please send an email to

We offer the following levels of sponsorship with different benefits included:

Benefit Sponsor Supporter Partner
Endorsement "... of the Swiss PGDay 2024"
Logo with link on homepage*
Logo with link on sponsor page*
Short description text on sponsor page*
Logo on printed schedule posters
Logo shown in opening & closing presentation*
Sponsor mentioned in opening & closing session*
Banner/Rollup in catering area
Exhibition table for flyers/merchendise
Marketing flyers at the Jobboard
Access to conference box
Free ticket(s)
Fee 1'300 CHF
0/6 available
400 CHF

* The order in which the logos are displayed depends on the level and the order in which payment is received.
** Partners are non-profit organizations that are approached by the organizing committee to directly support the Swiss PGDay with services such as location or marketing.

In order to maintain the non-profit character of the event, Swiss PGDay limits the number of sponsors to 6. The supporter level is not limited. Applications will be processed on a first come, first served basis. The sooner an application is settled, the sooner the logos will appear on the website.

Sponsors of any level do not obtain guaranteed presentations; the normal call-for-speakers process applies to their representatives, too.

There are also "Community Supporter" tickets available, where individuals or business attendees can voluntarily pay a little more for the ticket to support the community conference and fund discounted student tickets.
In addition to this, you can also support us with a donation. See the 'about' tab for details.

The organizing committee of Swiss PGDay reserves the right to reject applications if it feels that a sponsor does not fit the expected audience, or to adjust the conditions published here if necessary. The same conditions apply to all sponsors and supporters.


The OST (Eastern Switzerland University of Applied Sciences, Campus Rapperswil) is located directly at the upper Zurich lakeshore with a view on the alpine foothills ( Map - Address: Oberseestrasse 10, 8640 Rapperswil, Switzerland). A map of the campus with buildings and rooms can be found here. The registration is in the cafeteria in building Nr. 8. This is also the place where you can meet and get coffee during the day.

How to get there

The premises of the OST are right beside the train station of Rapperswil (southern exit, look for the signs). We recommend you therefore to use public transportation. It is possible, however, to reach the University by car.

Where to stay

If you are staying overnight and are looking for a hotel, there are several nearby accommodations in a variety of price ranges. Here are some suggestions:

Social event

See details under social event.

Job board

Looking for people or a new job? There's a whiteboard near the registration desk where sponsors, companies and conference attendees can post potential job openings, resumes, company profiles and more. If you hang around during the breaks, you may be able to connect with each other. We ask our sponsors to have a presence there.

Ease of access

The campus is accessible for wheelchairs.

Code of conduct

Swiss PGDay 2024 is dedicated to providing a harassment-free conference experience for everyone.
We do not tolerate harassment of Swiss PGDay 2024 participants in any form. Sexual language and imagery is not appropriate for any conference venue, including exhibition booths, talks, chat groups and social events around Swiss PGDay 2024. Conference participants violating these rules may be sanctioned or expelled from the conference without a refund at the discretion of the Swiss PGDay 2024 conference organizers.
Harassment includes offensive verbal comments related to gender, sexual orientation, disability, physical appearance, body size, race, religion, displaying sexual images in public spaces, deliberate intimidation, stalking, following, harassing photography or recording, sustained disruption of talks or other events, inappropriate physical contact, and unwelcome sexual attention. Participants asked to stop any harassing behavior are expected to comply immediately.
If a participant engages in harassing behavior, the Swiss PGDay 2024 conference organizers may take any action they deem appropriate, including ejection from the conference with no refund. If you feel that you are being harassed, notice that someone else is being harassed, or have any other concerns, please contact a Swiss PGDay 2024 Staff Member immediately.
Swiss PGDay 2024 Staff will be happy to help participants contact the police, provide escorts, or otherwise assist those experiencing harassment to feel safe for the duration of the conference.
Thank you for your help in making Swiss PGDay 2024 fun and enjoyable for everyone!
Local points of contact:
Organizing committee
Venue contact number: +41 58 257 47 46
Emergency services: 112.
If the complaint is about an organizer or staff members of the event, you may contact a SwissPUG Board member directly. You may also contact the PostgreSQL community code of conduct committee if you prefer an outside organisation, in which case the conference organizers and SwissPUG will commit to assisting the CoC committee to the best of their abilities.

Financial disclosure

The costs of Swiss PGDay are covered by the income from our sponsors and the registration fees. We try to keep the costs as low as possible for both parties and offer special rates for students to allow as many people as possible to attend. Our budget is calculated to break even. Operating losses and profits resulting from deviations from the budget will be managed by the Swiss PostgreSQL Users Group. Profits will be reinvested in the next year's Swiss PGDay.


You can support us financially by donating to the Swiss PostgreSQL Users Group association. There are no obligations associated with donations. Please mention in a short notice if the donation shall be treated anonymously or not. Donations can be sent via bank transfer to IBAN: CH11 0900 0000 6152 7599 2, BIC: POFICHBEXXX Account holder: Swiss PostgreSQL Users Group, 3110 Münsingen

Community event

Responsible for the Swiss PGDay is the Swiss PostgreSQL Users Group (SwissPUG). The event does comply with the PostgreSQL Community Conference Recognition guidelines and the use of the trademark "PGDay" is granted by PostgreSQL Europe.

Talk selection process

All submissions are looked at and considered by the program committee by reading abstracts, titles and submission notes. The program committee members each vote on every submission with a score of 1 through 9. We abstain from voting (i.e. vote NULL, not 0) on submissions by ourself or coworkers. We try hard not to have repeated speakers and to promote diversity.

Program committee (alphabetic order)

Organization committee (alphabetic order)

Past events

Swiss PGDay 2023
Swiss PGDay 2022
Swiss PGDay 2021
Swiss PGDay 2020
Swiss PGDay 2019
Swiss PGDay 2018
Swiss PGDay 2017 (German)
Swiss PGDay 2016 (German)

Background picture CC BY-SA 3.0 Roland zh. Thank you!
Portrait Placeholder CC BY-SA 4.0 Greasemann.

Social Event

On Thursday evening, 27 June 2024, all participants of the Swiss PGDay are invited to the social event at Club Bottéga. Here you can network and exchange ideas in an informal setting. Club Bottéga opens for us at 18:00. The buffet will be opened at 18:45. The cost for food, non-alcoholic drinks and beer will be covered by Swiss PGDay. To simplify logistics, please bring the voucher you receive at conference check-in and wear your name tag.

Coming from the conference venue, you will reach Club Bottéga at Neue Jonastrasse 72 after a 10-minute walk: Map

Bettega Outside Bettega Inside

Speakers Dinner

On Wednesday evening, 26 June 2024, the evening before the conference, we invite all speakers of the Swiss PGDay to our Speakers Dinner. We will meet at 19:00 at the Vinoteca Mi Tierra, Alpenstrasse 7, 8640 Rapperswil near the centre of Rapperswil. Map.

Please register at and select one of the menus below to let us know if you can attend:

If you have any special dietary requirements, please let us know.