[kalmar]

Hi post author here! First off, we actually do use RDS for other databases. As you point out, having a lot of the operational stuff taken care of for you is great.

The post is specifically about our Citus cluster, which stores the analytics data for all our customers. Most of the reasons we do this have been given by other folks in the replies:

  * RDS doesn't support the Citus extension
  * data is stored on ZFS for filesystem compression
  * we get significantly higher disk performance from these
    instances' NVMe attached storage, which isn't available for
    RDS