I believe you could use Datomic for event sourcing, though it wasn't explicitly designed for the job and may not be the best choice depending on the requirement

I believe you could use Datomic for event sourcing, though it wasn't explicitly designed for the job and may not be the best choice depending on the requirements of your system as a whole. Bobby Calderwood at Capital One has a talk on a system which includes both event sourcing (using Kafka, IIRC) and Datomic: https://speakerdeck.com/bobbycalderwood/commander-better-distributed-applications-through-cqrs-event-sourcing-and-immutable-logs https://speakerdeck.com/bobbycalderwood/commander-better-dis...