PGDay UK 2025

PGDay UK 2025 took place on September 12, 2025 in London, United Kingdom. The annual one-day PostgreSQL conference brings together the UK and international PostgreSQL community for a focused programme of technical talks.

Programme highlights

The 2025 edition featured talks across three tracks:

Performance & internals

• Understanding the PostgreSQL query planner cost model
• Autovacuum tuning for high-throughput OLTP workloads
• Buffer pool behaviour under write-heavy workloads

High availability & operations

• Patroni 4.0: what changed and why
• Logical replication in practice — pitfalls and solutions
• Zero-downtime upgrades using logical replication slots

Community & ecosystem

• PostgreSQL 17 feature walkthrough
• pgvector and AI workloads in production
• Migrating from Oracle to PostgreSQL — lessons from the field

About PGDay UK

PGDay UK is an annual single-day conference organised by volunteers from the UK PostgreSQL community. It is a non-profit event and part of the global network of PostgreSQL community conferences recognised by the PostgreSQL Europe association.

Full schedule and recordings are available at 2025.pgday.uk.