It's so not fast to develop with though. I used to use it exclusively for years just cos that's what I knew. Switching to Rails now because Rails blows it out the water for speed of development. I still have a lot of love for Spring Boot just because of the power/flexibility and how incredible it is as a framework and marvel of engineering. But starting a spring boot app vs. starting a rails app is night and day in terms of how far along you already are with a Rails app especially if you use something like https://bullettrain.co

Now this sounds interesting. I’ve been wanting to dig into Kotlin for awhile now. Were/are you a Java dev, or did you go into Kotlin without Java knowledge?