I like also the "append only" design. It means you store events, not state. You would not check a "is_read" boolean on a comment, you would insert a "who read w

I like also the "append only" design. It means you store events, not state. You would not check a "is_read" boolean on a comment, you would insert a "who read what when" event in a long but narrow table, whose indexing is much faster. I often want to promote this way to coworker, any reference on this topic to help me convince them?