On GitHub, the company claims LLRT offers up to over ten times faster startup and up to two times lower cost than other JavaScript runtimes running on AWS Lambda.
The speedup mostly comes from a limitation: LLRT requires one to bundle their code and dependencies into a single .js file and thus eliminates all the file system lookups that happen during the module resolution phase in Node.
LLRT is most efficient when utilized in smaller Serverless functions, focusing on data transformation, real-time processing, AWS service integrations, and authorization and validation tasks.
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