There is some new about PostgreSQL world.
Some useful tricks and tips about PostgreSQL, like how to get unused index list (but so many more like displaying fun smiley instead of blanks for NULL…)
https://www.crunchydata.com/postgres-tips
Some basics about transactions with examples
https://stormatics.tech/salmans-planet-postgresql/how-to-execute-transactions-in-postgresql
Huge progress with replication; implement bi-directional replication with upcoming PostgreSQL 16