"some functionality is lacking before Beam could be used as a critical production data store, including deletion of facts" It sounds like this needs a second c

"some functionality is lacking before Beam could be used as a critical production data store, including deletion of facts" It sounds like this needs a second central log to enable eviction of sensitive data before it can be seriously considered usable. One log for transactions and another other for the data itself. Or at least that is the conclusion we reached when designing and building our own knowledge graph store (with a similar use of Kafka): https://juxt.pro/crux/docs/index.html#_unbundled https://juxt.pro/crux/docs/index.html#_unbundled