© Laurenz Albe 2021 (Updated 2023-06-22) If you’ve heard about TCP keepalive but aren’t sure what that is, read on. If you’ve ever been surprised by error messages like: server closed the connection unexpectedly SSL SYSCALL error: EOF detected unexpected EOF on client connection could not receive data from client: Connection reset by peer then […]

Patroni has dramatically simplified the setup of the PostgreSQL High-Availability cluster. Personally I consider Patroni to be by far the best tool out there to cluster PostgreSQL and to ensure HA in the most reliable and straightforward way possible. The main questions asked by many people are: How can you make a PostgreSQL cluster transparent? […]

(Updated 2023-04-20) I recently had an interesting support case with table bloat that shows how the cause of a problem can sometimes be where you would least suspect it. Note: the problem I describe in this article can only occur in PostgreSQL v14 and below, since the statistics collector has been rewritten in v15. About […]

Once in a while, you have to juggle around with IP addresses and store them / process them in an efficient way. To do so PostgreSQL provides us with various data types, including cidr and inet. The beauty here is that those two types make sure that no bad data can be inserted into the […]

Given my experience in my daily work as a PostgreSQL professional I have the impression that most people are still not aware of the fact that PostgreSQL can handle IP addresses – and network information in general – pretty nicely.