Server Core is a full rewrite of our Server SDKs with a shared, performance-focused Rust library at the core - and bindings to each other language you'd want to use it in. Today, we're launching Java Server Core.
Server Core leverages Rust's natural speed, but also benefits from being a single place that we can optimize our server SDKs' performance. Our initial benchmarking suggests that Server Core can evaluate configs 5-10x faster than native SDKs.
You can install Java Core today by adding the necessary packages to your build.gradle - see our docs to get started. In the coming months, we expect to ship Server Core across Node, Python, PHP, and more!