Helidon 4 introduces support for Project Loom's virtual threads from Java 21. It aims to improve performance and simplify concurrent programming by transitioning from the complex reactive model to a more straightforward imperative model that uses 'blocking' calls.
The written-from-scratch Web Server in Helidon 4, previously named NÃma, includes support for multiple protocols and features for observability. This design aims to make NÃma a versatile tool for developers.
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