This is the first RC build of Helidon 4.0.0 and is intended as a preview release only. Do not use this release in production. It is suitable only for experimentation. APIs are subject to change. Documentation is incomplete. And some functionality is experimental.
The big news in Helidon 4.0.0 is the introduction of Helidon Nima -- a ground up webserver implementation based on JDK Project Loom virtual threads. With Helidon 4 you get the high throughput of a reactive server with the simplicity of thread-per-request style programming.
Java 21 is required to use Helidon 4.0.0-RC1.
Notable Changes
- Major refactoring of APIs is complete.
- HTTP/2 support is complete and in general WebServer and WebClient are feature complete
CHANGES
For a full list of changes please see 4.0.0-RC1 CHANGELOG