791: LLRT The Serverless Runtime w/ Richard Davison

Syntax - Tasty Web Development Treats

Wes Bos

Tech News, News, Technology

4.9 • 1.2K Ratings

🗓️ 5 July 2024

⏱️ 57 minutes

🔗️ Recording | iTunes | RSS

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Summary

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

Transcript

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0:00.0	Welcome to Syntax.
0:02.8	In this supper club, we're talking to Richard Davison.
0:07.0	We get into deep all about the new LLCT runtime for JavaScript that they're working on over at Amazon. This thing is crazy fast. In some
0:17.0	cases it can be over a 30-times improvement in cold start time. So we get into all of the details about how this thing is able to be so incredibly fast,
0:28.0	how he's putting this together, what you can use it for, what are the ideal use cases for serverless in general and just all the ins and outs about
0:35.5	building a runtime for a serverless platform. So without further ado let's get to
0:41.2	the interview. Welcome to the show, Richard.
0:47.0	How's it going, man?
0:50.0	Thank you so much, Scott.
0:51.5	Thanks for having me.
0:52.7	It's great.
0:54.4	Beautiful weather here in the west coast of Sweden.
0:57.2	It's about 25 degrees Celsius, sun is shining,
1:02.3	you know, awesome.
1:04.7	I love it, love it.
1:06.0	So maybe before we get into any of the LLCRT stuff,
1:11.3	let's maybe just give, if you could give us a background on you know who you are, what you've been doing and how long you've been doing it.
1:18.0	Sure. So my name is Richard Davidson. I'm a I want to call it developer slash architect from
1:26.4	Sweden. So I've been building with web technologies basically my entire career.
1:32.6	So I started out with node, I think almost 10 years ago
1:36.2	at my, basically my first like real job at university.
1:40.6	So we were quite early back then. It was at CGI. So a big consultancy company. We were really early in the nodes. I think we in the node ecosystem or we started building when it was something, the version was something like 0.84 I don't
	...

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