What is event sourcing, and why should you care? Carl and Richard talk to Jeremy Miller about the latest version of Marten, the Document store for PostgreSQL - and how there is an increased focus in this version of event sourcing. Jeremy talks about the patterns of development around event sourcing, separating how data is written to a system from reading it. One of the side effects is some latency, but the advantage is scalability and reliability. It takes some time to get used to the patterns around event sourcing, but for the right project, it can make all the difference!