https://www.techempower.com/benchmarks/
DropWizard is modern, but it isn't fast. Go and even Node.js are significantly faster. If you want performance, you cut layers out of the stack - check out the numbers for raw servlets or even just straight Jersey annotations in that benchmark. If I were doing JSON-over-HTTP microservices in Java, I'd likely use straight Jersey + Jackson, or if performance was really a problem, Boon over straight servlets.
What framework did your Go rewrite use? The standard libs?
Call me crazy, but I like my dropwizard with Spring DI for (singleton) resource setup, a micro-ORM to get work done, and HikariCP datasources at runtime.
Entity framework has include and active record has includes which do the same thing. The qt ORM also has something similar.
The only ORM I have seen that lacks this critical feature is odb. It doesn't allow setting the fetching strategy on a per query basis. You have to either always use eager loading or lazy loading which basically makes it useless for my purposes.
Any benchmarks to provide in order to support this wild claim?
The main advantages that Go has over Java is that the standard library is brilliant - thus obviating the need for folks to create monstrous frameworks (and losing performance) and that Go has better memory utilization because of value types (structs) and because it is AOT compiled. Unfortunately Java JIT as designed by the JVM devs takes a lot of memory.
In raw performance, I would still give the edge to Java over Golang though.
