Tyler McMullen

Building a better internet; CTO at Fastly

Tyler is CTO at Fastly, the leading-edge cloud platform, where he is responsible for evolving the system architecture and the company's technology vision. He leads a team of experienced technology innovators focused on internet scale, and working on future-facing, ambitious projects and standards. As part of the founding team at Fastly, Tyler built the first versions of Fastly's Instant Purging system, API, and Real-time Analytics, while scaling the engineering team tenfold.

Prior to joining Fastly, Tyler worked on large scale web applications, text analysis, and performance. He can be found talking about edge computing, networking, and distributed systems all over the world.

Past Activities

Tyler McMullen
Code Mesh LDN
08 Nov 2019
15.35 - 16.20

Lucet: safe WebAssembly outside the browser

Lucet is a new open source tool for compiling, embedding, and running WebAssembly outside the browser. It's made specifically for running untrusted code in a high concurrency and multi-tenant environment. In other words, it's made for taking the serverless model to the edge and beyond. Join Fastly CTO Tyler McMullen in a discussion on how Lucet was built, how it works, and the novel serverless models it's made to enable.


WebAssembly Open source Edge computing


Attendees will learn more about the new open-sourced tool, Lucet (Fastly's native WebAssembly compiler and runtime that was open sourced March 2019), and various passes that happen in a modern compiler, how they're used and why. We'll also discuss the concept of security-by-contract and how it's used in Lucet. To conclude, we may have room to cover user-space context switching, security issues that can't be solved by a solution like Lucet alone, and future ideas for ways that Lucet can get even better.