PGConf.Russia 2021

The built-in partitioning mechanism in PostgreSQL has been developing for several years. However, there is no magic button that would transform an ordinary table into a partitioned one. I will explain how to implement partitioning in a production system, how to prepare your table and apps for partitioning, and what pitfalls can make a DBA's life harder. We will also take a deep dive into various techniques of transferring data between partitions, also considering their pros, cons and limitation.

This talk is about postgres extension pg_profile - simple historic database workload profiler. I'll talk about its new features and new statistics available in Postgres 14. There is a branch of pg_profile named pgpro_pwr, designed to run in PostgresPro Enterprise Edition and PostgresPro Standard Edition databases. It is using extended performance statistics of those databases providing some valuable benefits. We'll see what's new in pgpro_pwr extension. Also I'll talk about some problems in postgres performance monitoring and their possible solutions in the future.

In 2019 we migrated distributed railway application from Oracle 11g SE to vanilla PostgreSQL 11.9. Almost 2 years have passed, the system is working good. The report focuses on how we migrated, what problems we faced during this migration and after migration, as well as what we would have done differently today experience.

JSON is now the de facto standard for startup developers. Why is this happening and what should be done? Should we teach application developers how to properly design a database according to the canons of relational theory (which Postgres complies very well with) or make the DBMS more JSON-friendly?