I used Spring Boot at work and I have worked with backend libraries like Express(JS), Flask(Python), Gin(go) all the experiences have been much better than using Spring Boot. Java takes too long to compile, dependecy injection in Spring just seems to take forever, and overall Java is very very verbose. Just to create a stupid API, you have to create a new class for request, one for response, controller, service. I can do it if I am paid for it but using that for side projects, a big NO.
