LLRT: Blazing Fast Serverless JavaScript Runtime

AWS Labs introduces LLRT, a lightweight JavaScript runtime built in Rust designed for high-performance serverless applications. Outperforming other JavaScript runtimes on AWS Lambda by over 10x faster startup and up to 2x lower cost, LLRT utilizes QuickJS as its JavaScript engine for efficient memory usage and rapid startup. While experimental, LLRT supports deployment via custom runtimes and container images, includes robust testing tools, and offers excellent compatibility with AWS SDK v3. It's not a Node.js replacement, but rather a complement for performance-critical serverless functions, ideal for tasks like data transformation and real-time processing. Its Node.js-based API ensures easy transition from other solutions.