Looks well thought out, but what are the mechanics of plugging this into reactive workflows? I always thought a nice event sourcing query language would evolve along the thoughts in https://picolabs.atlassian.net/wiki/spaces/docs/pages/118989...

There is already a database named EventQL: https://github.com/eventql/eventql I covered it in my presentation: https://presentations.clickhouse.com/2018-unknown_developers...