DatabasePlanet PostgreSQL
Database
Parallel queries in PostgreSQL need shared memory sized at runtime, not startup.

The Evolution of Cassandra Data Movement at Netflix
A skewed partition key can route 80% of your writes to one partition. Learn how to diagnose PostgreSQL partition hot spots and fix them at the schema level.
Logical replication has been an integral part of Postgres since version 10 released in 2017. It's a very convenient system for synchronizing one or more tables from one running Postgres cluster to another, and the community has embraced it…