Forest Framework = Vert.x + Guice, with special support for Kotlin coroutines - "Code like sync, works like async", just like Loom.
Heads up: if you're not going to build an application for millions of concurrent users, go to Spring Boot.
Without Project Loom, we have only two options for JVM-based application:
- Synchronized application with heavy threads: easy to write, bad for performance.
- Async application with callback hell: much better performance, disastrous readability and maintainability.
Forest Framework support Kotlin coroutines first workflow: you write suspend synchronized-like methods, then everything works in async way.
This is a Forest application example acting as a reverse proxy which redirects github.com to localhost:8080.
As you can see, we are writing sync code that works in non-blocking way - the code runs in Vert.x event loop thread and doesn't block at all.
And we avoid the usual callback hell in Vert.x!
@ForestApplication
class App @Inject constructor(vertx: Vertx) {
private val webClient = WebClient.create(vertx)
@GetHtml("/")
suspend fun index(): String {
return webClient.getAbs("https://github.com").send().await().bodyAsString()
}
}