“I was hired as a Cassandra engineer. but I recommended that we also try Scylla because it’s written in C++. That seems to be the direction everybody’s headed. Scylla makes the right tradeoffs, taking the best of Cassandra while avoiding the downsides.”

“These attachments are referenced by hash. We use a content addressing scheme (meaning the hash of the payload is used as the name of the asset) that allows us to quickly de-duplicate large attachments that might have different objects describing them. We also support arbitrary mapping from one key to …