PostgreSQL Usergroup NL Spring Meetup April 2026

Dear PostgreSQL Enthusiasts,

We are happy to invite you to the Spring Edition of the PostgreSQL User Group NL Meetup on April 9th 2026 in Amsterdam.

This meetup brings us two exciting sessions from two international PostgreSQL experts , one from Luigi Niardi on Workload Fingerprints: a data cleaning pipeline for effective AI performance tuning and another by Dmitry Fomin on The Pulse of Postgres: Implementing Wait-Based Observability at Scale.

As usual we have some space in the program reserved for anyone who wants to do a lightning talk. Please contact us through a personal message on meetup.com.

This time around the meetup is supported by Vandebron Energy. Thank you for supporting the PostgreSQL community with the venue and hospitality!

We hope to meet many of you at the meetup as this is a moment where PostgreSQL users can connect, share knowledge, and discuss the latest developments in the PostgreSQL ecosystem.

We look forward to a great meetup!

Feike Steenbergen
Gerard- Zuidweg

Meetup Program:

17:30 - 18.25: Welcome, Beer & Bites

18:25 – 18:30: Opening

18:30 - 19:10
Workload fingerprints: A data cleaning pipeline for effective AI performance tuning
By – Dr. Luigi Nardi

Abstract:
PostgreSQL performance measurement is complex; metrics like average query runtime often hide significant variability, particularly when analyzing short time windows or different times of the day. This talk explores the limitations of traditional performance indicators and introduces a novel workload fingerprint method designed for more reliable performance assessment, particularly in live production environments. This fingerprint approach provides a granular view of database activity, aiding both human database administrators and AI-powered tuning systems in understanding and effectively addressing performance tuning. Attendees will gain insights into effective tuning strategies and monitoring techniques, engaging in discussions that span both the technical implementation and philosophical considerations of database optimization, ensuring a comprehensive understanding of the challenges and solutions in maximizing PostgreSQL efficiency in the AI era.
About
Dr. Luigi Nardi is the founder and CEO of DBtune, a leading company driving advancements in AI, database systems, and cloud computing.
Break

19.15 – 19.55
The Pulse of Postgres: Implementing Wait-Based Observability at Scale
By Dmitry Fomin

Abstract:
Modern observability is shifting from "What is happening?" to "What is my database waiting for?" Wait event analysis is the most direct path to understanding system contention and resource saturation.

In this presentation, we explore the architecture of the Postgres wait event subsystem - sampling and tracing. We will discuss why wait events are the ultimate "ground truth" for database health and how to build a monitoring stack that captures these transient events. learn Attendees will how to differentiate between normal background noise and critical contention, ensuring that your scaling decisions are backed by hard evidence rather than intuition.
About
Dmitry is a Postgres DBA at Adyen, where he specialises in Postgres troubleshooting and performance. With over 10 years of hands-on experience with PostgreSQL and 20+ with databases in total, Dmitry has a deep understanding of Postgres internals, performance tuning on observability.

19.55 - 20:00: Lightning Talks

20:00- 20:30: Wrap up and drinks