Tessera
Folgen

David Justice

@david.justice.dev

Open source at Azure. These are my opinions.

34 Posts154 Follower169 Folgt
David Justice@david.justice.dev · last mo.

🚀 Azure Front Door edge actions is live in public preview powered by Hyperlight, the isolation engine my team builds! Every customer's code runs in its own Hyperlight VM. Secure, programmable compute at the global edge. So proud! 🛡️🔥 #Azure #Hyperlight techcommunity.microsoft.com/blog/azurene...

Introducing Azure Front Door edge actions - Bringing secure, programmable logic to the edge | Microsoft Community Hub

Modern web applications are expected to feel instant, secure, and personalized, no matter where users connect from or what device they use. Delivering that...

techcommunity.microsoft.com

David Justice@david.justice.dev · 2mo ago

I have a confession. I have way too many tabs open at any given time. I often forget which one is the one I was last looking at and lose it among the others. I think I'd have a much better chance of finding it if the most recent touched moved all the way to the right or top of the list.

squillace@squillace.bsky.social · 3mo ago

and the docs are up: learn.microsoft.com/en-us/agent-.... This uses precisely the thing @aspenwilder.bsky.social had done over here using monty "python" as a #webassembly component, and it screams: www.linkedin.com/feed/update/...

Hyperlight CodeAct

Use the Hyperlight connector to add CodeAct and sandboxed Python execution to Agent Framework.

learn.microsoft.com

squillace@squillace.bsky.social · 4mo ago

super excited to see the @cncf.io project #hyperlight and #webassembly start to make defense-in-depth a reality. devblogs.microsoft.com/agent-framew... is the Agent Framework using #wasmtime inside an OS-less microvm to execute python beyond fast with full software AND hardware protection.

squillace@squillace.bsky.social · 5mo ago

This morning we will be using this sample to teach #hyperlight and #webassembly at @wasm.io codespaces.new/hyperlight-d... (a bigger machine is a good idea when prompted)

Build software better, together

GitHub is where people build software. More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects.

codespaces.new

David Justice@david.justice.dev · 5mo ago

Want a sneak peek at some of fun #Hyperlight stuff going on at Wasm I/O?

squillace@squillace.bsky.social · 5mo ago

And a double bonus! Debugging! (though not kotlin quite yet, alas) : 2026.wasm.io/sessions/eve...

WASM I/O • 19-20 Mar • Barcelona 2026

Even More Hoops: Debugging WebAssembly across the Hardware Memory Partition Boundary • Wasm I/O 2026. A 2-day WebAssembly conference in Barcelona, Spain

2026.wasm.io

zalim (kotlin wasm compiler webassembly VM)@bashorov.com · 5mo ago

🔥 BREAKING 📰: Kotlin Wasm Component Model support to debut at #hyperlight-wasm workshop during #wasmio26 Don't miss! 2026.wasm.io/sessions/han... #Kotlin #Wasm #ComponentModel #HyperlightWasm

squillace@squillace.bsky.social · 5mo ago

of course! The basic sample we'll be using will be github.com/hyperlight-d.... Running and navigating this in order to understand how the component calls get mapped into and back out of the guest micro-vm -- that has no operating system -- is the main core of the workshop. Bonus!!! Changing the WIT!

GitHub - hyperlight-dev/hyperlight-wasm-http-example

Contribute to hyperlight-dev/hyperlight-wasm-http-example development by creating an account on GitHub.

github.com

squillace@squillace.bsky.social · 5mo ago

If you're coming to @wasm.io this week and want to build and run #webassembly components in #hyperlight-wasm this Thursday, you'll need a linux box (or windows with wsl) that has nested virt enabled. M3 and M5 macs **may** work, but that's coming in really hot. So get those cloud VMs ready to use!

squillace@squillace.bsky.social · 5mo ago

see you there! we'll be running a workshop there, using and explaining how to use #hyperlight-wasm with components. (opensource.microsoft.com/blog/2025/03...): 2026.wasm.io/sessions/han... lemme guess: you're doing Kotlin? :-P

Alexander Reelsen@spinscale.bsky.social · 7mo ago

docfind - a high-performance document search engine built in Rust with WebAssembly support Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization. github.com/microsoft/do...

GitHub - microsoft/docfind: A high-performance document search engine built in Rust with WebAssembly support.

A high-performance document search engine built in Rust with WebAssembly support. - microsoft/docfind

github.com

squillace@squillace.bsky.social · 9mo ago

I might be even more thrilled for the entire @fermyon.com and #Akamai teams here than they are. Akamai has realized that it could put together a next-gen cloud native platform that both enables and pushes a huge amount of work far, far closer to the users than ever. And Fermyon....

Fermyon@fermyon.com · 9mo ago

Today, we are super thrilled to announce that Fermyon is now part of Akamai Technologies. Fermyon’s vision of building the next generation of serverless computing slots perfectly into Akamai’s own vision for the future of edge technology. www.fermyon.com/blog/fermyon...

squillace@squillace.bsky.social · 11mo ago

For those Master's or Ph.D. students doing systems work, you might have a look at this internship with @microsoft.com's research team: www.linkedin.com/posts/pedroh... Yes, you'll do some immediately important work, and it's really cool, too.

🚀 Internship Opportunity in Systems Research The Microsoft Research - Systems Group https://lnkd.in/dPCb5fqC) and the Azure Research - Systems https://lnkd.in/dhf6Xx-s) are hiring an intern to help… ...

🚀 Internship Opportunity in Systems Research The Microsoft Research - Systems Group https://lnkd.in/dPCb5fqC) and the Azure Research - Systems https://lnkd.in/dhf6Xx-s) are hiring an intern to help b...

linkedin.com

David Justice@david.justice.dev · last yr.

I think agentic coding AI's offer a really interesting test for usability. Say you are building dev tools and you want to see if given documentation a new user could do it, give it to the AI and see where it fails. I'm going to bet the places where the AI fails will be sticking points for humans.

David Justice@david.justice.dev · last yr.

🎉 Introducing Wassette: a runtime for secure, sandboxed WebAssembly Component tool execution via the Model Context Protocol (MCP). Easily register reusable WASM tools inside AI agents like VS Code all without leaving the chat window. Start using it to safely extend your agent’s capabilities! 🚀

Aaron Wislang 🇨🇦@aaronw.dev · last yr.

Introducing Wassette: WebAssembly-based tools for AI agents by Yosh Wuyts opensource.microsoft.com/blog/2025/08...

Catherine@whitequark.org · last yr.

i've modified wasi-libc and wasi-sdk (PRs pending) so that you always have the concurrency APIs (pthread_*, thrd_*, <thread>, <mutex>, <atomic>) available to you, even in single-threaded targets. this makes porting applications (especially C++ ones) much, _much_ easier!

Refactor stub pthread library and enable unconditionally by whitequark · Pull Request #602 · WebAssembly/wasi-libc

This PR changes the layout of the stub pthread library to match that of libc-top-half: splits it into (mostly) one file per function, and ensures the same API is exposed from both libraries, adding...

github.com

squillace@squillace.bsky.social · last yr.

For those who are about difficult hardware #virtualization efficiency and dev experience (WTF????) you might find @dblnz.dev's blog post on #hyperlight and interactive debugging interesting. It's a blast for any micro-guest, including #webassembly. opensource.microsoft.com/blog/2025/07...

Hyperlight: Debugging hardware-protected guests - Microsoft Open Source Blog

Find out how you can step through code in your guest micro-VM by attaching the GNU Debugger at runtime to debug Hyperlight guest micro-VMs.

opensource.microsoft.com

squillace@squillace.bsky.social · last yr.

Missed this: very good article by @thenewstack.io on a @rejekts.io talk prior to #kubeconEU about #hyperlight and #webassembly in #envoy. Slow as a first draft; but getting faster and makes hostile multitenant #networkfunctions possible to imagine. thenewstack.io/webassembly-...

WebAssembly, ‘Hyper VMs’ and Hypervisors: Fast Speeds, Intense Isolation

In this article, we look at what happens when you combine WebAssembly with Hyperlight.

thenewstack.io

squillace@squillace.bsky.social · last yr.

I confess to liking the progress made in the #Dual-LLM family of #llm security patterns started with @simonwillison.net's original Dual-LLM "separation of query concerns" in simonwillison.net/2023/Apr/25/.... ....

The Dual LLM pattern for building AI assistants that can resist prompt injection

I really want an AI assistant: a Large Language Model powered chatbot that can answer questions and perform actions for me based on access to my private data and tools. …

simonwillison.net