PGConf.Russia 2021

PostgreSQL could easily be named the master of indexes - there is no other database that could compete with Postgres for the variety of indexes. How developers can use this advantage effectively in their day to day work? How do you know which index to create? When the created index might slow our application’s performance? We will try to get our head around this topic with some use cases and live examples. This talk would be of interest for any developer who wants to expand their knowledge of indexes in Postgres and secure the best performance for their application.

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.

Narrow way to four nines. Postgresql clusterin in virtual environment - why's and how's. Why Corosync/Pacemaker? What about backups? Difficulties, problems and how to avoid them.

In May 2019, Postgres Professional launched the PostgreSQL certification program. I have been working in this company since March 2020, and in a year I have successfully taken four tests on the DBA1, DBA2, DBA 3, QPT courses. In this talk, I will share my experience of preparing for the exams and passing these tests.