Mastodawn

http4s is a backbone for many mission-critical systems. I'm pleased to share that "Pure functional HTTP APIs in #Scala" by Jens Grassel is free once again, and this time it's for good! 📖

It's a fantastic resource for anyone looking to build robust, battle-tested web backends.

https://leanpub.com/pfhais

Pure functional HTTP APIs in Scala

A book about developing purely functional HTTP APIs with Scala using http4s, Doobie, Cats and other libraries including a chapter about upgrading to Scala 3.