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791: LLRT The Serverless Runtime w/ Richard Davison

Syntax - Tasty Web Development Treats

Full Stack Developers Wes Bos and Scott Tolinski dive deep into web development topics, explaining how they work and talking about their own experiences. They cover from JavaScript frameworks like React, to the latest advancements in CSS to simplifying web tooling.

Scott and Wes chat with Richard Davison from AWS about LLRT, a new runtime tailored specifically for Lambda. They dive into the benefits of using LLRT, challenges with JavaScript in serverless, and why Rust was chosen for its development. Show Notes  00:00 Welcome to Syntax! 01:07 Who is Richard Davison? 05:11 What is LLRT and what’s the motivation for building it? 08:25 AWS Lambda example. 11:20 What makes LLRT specifically tailored to Lambda? 14:55 Brought to you by Sentry.io. 15:22 Node.js in Lambda. 16:00 What are some challenges that people have with JavaScript in serverless? 17:20 Lambda memory configuration. 19:23 Managing cost of compute. 21:29 Simpler and faster than Node, Bun, Dino, but not a replacement. 22:31 The benchmarks. 27:00 Quick.js, the main reason for the performance gains. Fabrice Bellard QuickJS.  28:03 The Quick.js engine. 30:35 What was the reason behind creating Quick.js? 33:46 What made you pick Rust for LLRT? 36:34 Abstractions and the value of speed. 39:08 The JIT Compiler. 42:38 Compile cache. 43:27 De-optimizations. 44:59 Node.js Compat, what to use and avoid with LLRT.  GitHub AWS Labs Compatibility Chart.  47:52 Will you target with WinterCG spec? 50:22 Streams API. 52:06 What about WebSockets? 53:10 Is this going to be promoted from a labs project? 54:49 Sick Picks + Shameless Plugs. Sick Picks  Richard: QuickJS Engine, JSLinux. Shameless Plugs  Richard: Javascript  Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

Scott and Wes chat with Richard Davison from AWS about LLRT, a new runtime tailored specifically for Lambda. They dive into the benefits of using LLRT, challenges with JavaScript in serverless, and why Rust was chosen for its development.
 Show Notes  00:00 Welcome to Syntax!
 01:07 Who is Richard Davison?
 05:11 What is LLRT and what’s the motivation for building it?
 08:25 AWS Lambda example.
 11:20 What makes LLRT specifically tailored to Lambda?
 14:55 Brought to you by Sentry.io.
 15:22 Node.js in Lambda.
 16:00 What are some challenges that people have with JavaScript in serverless?
 17:20 Lambda memory configuration.
 19:23 Managing cost of compute.
 21:29 Simpler and faster than Node, Bun, Dino, but not a replacement.
 22:31 The benchmarks.
 27:00 Quick.js, the main reason for the performance gains. Fabrice Bellard QuickJS.

 28:03 The Quick.js engine.
 30:35 What was the reason behind creating Quick.js?
 33:46 What made you pick Rust for LLRT?
 36:34 Abstractions and the value of speed.
 39:08 The JIT Compiler.
 42:38 Compile cache.
 43:27 De-optimizations.
 44:59 Node.js Compat, what to use and avoid with LLRT.  GitHub AWS Labs Compatibility Chart.

 47:52 Will you target with WinterCG spec?
 50:22 Streams API.
 52:06 What about WebSockets?
 53:10 Is this going to be promoted from a labs project?
 54:49 Sick Picks + Shameless Plugs.
  Sick Picks  Richard: QuickJS Engine, JSLinux.
  Shameless Plugs  Richard: Javascript
  Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads
 Wes: X Instagram Tiktok LinkedIn Threads
 Scott: X Instagram Tiktok LinkedIn Threads
 Randy: X Instagram YouTube Threads

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791: LLRT The Serverless Runtime w/ Richard Davison

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