Javalin

Javalin: Lightweight Fast Web Framework for Java & Kotlin

Javalin is a lightweight, fast web framework for Java and Kotlin focused on simplicity and Java/Kotlin interoperability. It's designed for building REST APIs and web applications with a minimal amount of boilerplate code.

What is Javalin?

Javalin is a lightweight, fast web framework for Java and Kotlin focused on simplicity and Java/Kotlin interoperability. Key features of Javalin include:

• Minimal and fluent API for writing web applications and REST APIs
• Support for Java 8 lambdas and Kotlin lambda syntax for route handlers
• Embedded Jetty server with support for blocking and asynchronous code
• Plugin system for adding additional functionality
• Focus on HTTP and REST, without forcing decisions on serialization or ORM

Some of the advantages of Javalin over other Java web frameworks like Spring MVC and JAX-RS implementations include simpler APIs, lighter weight, and better Kotlin support out of the box. It avoids over-configuration and aims to let developers get started quickly. Performance is also a key goal of Javalin.

Javalin is well-suited for microservices, REST APIs, web applications, and server-side rendered apps. Due to its embedded server and focused scope, it works very well for handling HTTP logic and leaving serialization, db access, dependency injection etc to other libraries in your stack.

Javalin Features

Official Links