Well, it is an advertisement, but much of what it says is undoubtedly true. It's true that databases are effectively global mutable state in practice, with all

Well, it is an advertisement, but much of what it says is undoubtedly true. It's true that databases are effectively global mutable state in practice, with all the headaches that gives, and that event sourcing and materialized views is a damn appealing solution to it. However, the jump from that to saying you have it is a bit like the jump from talking about the messiah and saying that he's sitting in the next room just now. We investigated event sourcing and materialized views as the backbone of a (new) big business application five years ago. The problem was that there were so few products back then and they were so untested (unless my mind is playing tricks on me, we did look at EventStoreDB, as well as Kafka streams), and despite being open source they were also usually heavily tied to one commercial provider. No one had anything like experience with it. I couldn't convince my colleagues to go for this, much less my bosses. Hell, I could barely convince myself. Philosophically, I believe it's sound, but how much has changed in those years?