Ready for Changes with Hexagonal Architecture

Really nice read! I first heard about Hexagonal Architecture thanks to the posts of a cool developer I used to stumble upon in Quora frequently, but, since then, I've seen it mentioned in a few more occasions and it's nice to see it in action in Netflix!

Slightly unrelated, but, this is also mentioned in the book "Grokking functional programming" from Manning, essentially keep the stateful pieces of your system at the boundaries and strive to keep services which handle business logic as pure and side effects free as possible.