This is a very insightful comment on Hacker News: hacker-news-comment-deconstructed-database about the issues with concept proposed in the book-designing-data-intensive-applications: "unbundling the database" - data-architecture-glossary . Increasingly I view the Kinesis streams as our system of record, but they're pretty bad for that in actuality.
With an infinite log you can't move forward... like apps-force-you-to-keep-api-compatibility