PGConf.Russia 2021

Crew Resource Management is a field which has become critical in many fields including aviation and nuclear power. However in IT, this field has not been well implemented. In this talk we will discuss what crew resource management is, what kinds of problems it solves, and why all database teams should implement it.

Several PostgreSQL-related case studies will be discussed and both technical and human factors will be part of the case studies.

When working with PostgreSQL, we regularly encounter queries that take suspiciously long to be executed. What if it's too late to enable statistics or auto explain, and cancellation of the query doesn't look sensible, but you still need to find out what caused the issue or see at what stage execution the query is? pg_query_state is an open source PostgreSQL extension, which can give you access to the query execution plan in real time. It also makes available statistics for each node, including the number of processed rows.

Postgres has been a vibrant project for decades, and probably will be popular for decades to come. However, as with any complex endeavor, challenges are always lurking. This talk explores the many project, competitive, and technical challenges in the future that could derail its success. By exploring these challenges, we will be better able to avoid them.

Data is getting bigger, disks are getting faster, the DBMS optimizer is getting smarter, but the problem of " bloating " remains extremely relevant. I want to share my experience and approach to dealing with this effect on a large number of tables and data in them.