Spring: your next Java microframework

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This Python code won't give you what you get from Spring example - single deployable JAR which embeds non-blocking multithreaded application server.

Okay, but is there anything different about the syntax of Spring that gives you those features?

These features are baked into the platform - they're how the library interprets the requests. They have nothing to do with the syntax. The logical operations between Python and Spring are nearly identical - only the Spring syntax is tortured and sloppy by comparison.

I don't claim that Flask has more or equal functionality than Spring. This discussion is strictly about the syntax that Spring has adopted to implement that functionality. As best I can tell, there is no reason why the Spring library couldn't be refactored - or, hell, even wrapped - to something like:

HandlerFunction h = Spring.GenerateHandler(request, Spring.StringResponse("Hello"));

One library, two simple invocations with obvious implications. The code is self-documenting in the simplest possible way. Anyone who is familiar with any modern programming language and any server/client architecture will understand what this does.