© Laurenz Albe 2020 After all the technical articles I have written, I thought it would be nice to write about PostgreSQL sociology for a change. Language and community A community like PostgreSQL has no clearly defined borders. There is no membership certificate; you belong to it if you feel that you belong. That said, […]

I wrote about the new pg_timetable 3 major release not so long ago. Two essential features were highlighted: – new session locking implementation – new jackc/pgx Golang library used Today I want to reveal one more advanced feature! Fasten your seat belts! First, we need to distinguish exclusive client session mode from exclusive chain execution […]

© Laurenz Albe 2020 Introduction We know that PostgreSQL does not update a table row in place. Rather, it writes a new version of the row (the PostgreSQL term for a row version is “tuple”) and leaves the old row version in place to serve concurrent read requests. VACUUM later removes these “dead tuples”. If […]

Recently, PostgreSQL 13 was released. People are asking what are best ways upgrading and updating PostgreSQL 12 or some other version to PostgreSQL 13. This blog post covers how you can move to the latest release. Before we get started, we have to make a distinction between two things: Updating PostgreSQL Upgrading PostgreSQL Let’s take […]

PostgreSQL offers a nice BLOB interface which is widely used. However, recently we came across problems faced by various customers, and it makes sense to reflect a bit and figure out how PostgreSQL handles BLOBs – and especially BLOB cleanup. Using the PostgreSQL BLOB interface In PostgreSQL, you can use various means to store binary […]