Vert.x is a JVM-based distributed application framework that was inspired by Node.js, but with a definite aim to reap benefits of the Java platform APIs. Vert.x and Node.js are similar in some ways but different in others. None need introduction. Both are very popular open source java projects.
- Both Node.js and Vert.x give scalable server-side applications but vert.x scales far more easily than Node.js.
- Node.js starts multiple lightweight, single-threaded servers and routes traffic to them while Vert.x deploys servers inside a JVM, using JVM facilities to manage the traffic to lightweight server processes.
- Vert.x is a dynamic language paired with a hybrid concurrency model like while Node.js is a pure asynchronous one, making the former more robust.
- Culmination of projects is quicker in Node.js as it is much faster to build and debug as there is only one language to cater to. Vert.x projects generally turn out to be a big mixed bag and the development and testing teams need to have skills for all the languages used.
- While using Vert.x it is not necessary to run everything in an event loop. Usage of legacy blocking APIs like JDBC hence becomes possible in Vert.x but it is not possible at all with Node.js.
Like Node.js, Vert.x is a server framework providing an event-based programming model providing asynchronous API. Both the techniques are quite popular and many developers strike a balance by harnessing both the techniques equally well to implement different projects.