Interesting article!

One question, how are your backups?

We moved away from datastax for a number of reasons, one of the biggest was the lifecycle manager. For us, it silently failed to make backups, created backups that were unrecoverable, and other generally nasty stuff.

The worst part was with every update, something broke that should have been caught be QA. It felt like nobody was regularly testing their backups, or they rolled their own(which defeats the point of buying support)

Having said that, if you wanted to stream things like log data, cassandra was brilliant.

However, it collapsed like a sack of poop as soon as you wanted to do any kind of reading. In the end we replaced a 6 node r4.4xlarge 4TB cluster with a single t2.medium Postgres instance.