Play framework (https://www.playframework.com https://www.playframework.com), a JVM (Scala/Java) high performance web framework. Underlying it applies netty.io

Play framework (https://www.playframework.com https://www.playframework.com), a JVM (Scala/Java) high performance web framework. Underlying it applies netty.io as I/o engine. I introduce this because, you can just simply write Java code without learning the servlet spec to build your app server. There is nothing wrong about servlet spec, but it definitely slow down people prototyping some startup ideas. Play framework actually borrows the route file idea from Ruby community to let you write plan Java functions and configure route file to exposure them as REST APIs. Talking about concurrent model, play framework mixes two models – reactor (This is the concurrent model NodeJS keep advertising about) and Actor model.