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David Pine@davidpine7
12 Nov 2025
🥳 I have a bit of news to share, github.com/microsoft/aspi… is now open source! #aspire @aspiredotdev
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revolvermag
@Revolvermag
15h
DEFTONES opened their Dia de los Deftones 2026 set with "Back to School (Mini Maggit)."

🎥: D.A.'s Alive Vault (YT)
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brady gaster@t80chip
Nov 7
sooooo TIL you can fire up the @github browser agent experience, type in a prompt, and, if the repo in which you're running has Squad installed in it...

... your squad will go to work for you right there in the browser.
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brady gaster@t80chip
Nov 6
And it has been done. @tamir_dresher and give you the new Squad repo. github.com/github/squad
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Aspire 💫
@aspiredotdev
Nov 5
If you don’t quite “get” Aspire yet, one of our fav internal Microsoft customers - and Aspire contributor!!! - has you covered with this @TrondheimDC talk. Great work @Chris_L_Ayers 👏💫
David Fowler
@davidfowl
Nov 5
Really good talk on @aspiredotdev youtu.be/gQFlhmBHArw by @Chris_L_Ayers !

#aspire
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Cassidy
@cassidoo
Nov 4
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Steve Carroll@ScareAll
Nov 2
I'd really encourage folks to watch the discussion of choosing a language in this (~5:00). We get asked a lot of questions about this and Stephen talks through the constraints here. Rust has a lot of advantages, but there is no one size fits all answer ever.
Ryan Peterman
@ryanlpeterman
Nov 2
In the year 2000, Joel Spolsky (founder of Stack Overflow) wrote a famous article titled “Things You Should Never Do, Part I.” In it, he talks about how rewriting your code from scratch is the single worst strategic mistake any software company can make. However, times have riting software is dropping exponentially and that has changed the math entirely on if it is worth rewriting your codebase. For instance, this year Anthropic’s Jarred Sumner ( @jarredsumner ) rewrote Bun in Rust in 11 days leading to many performance and correctness benefits.

Likewise, Stephen Toub (Distinguished Engineer at Microsoft, @stephentoub ) rewrote the GitHub Copilot runtime (400,000-line codebase) in Rust by himself. I thought it’d be interesting to lay out everything he learned in the process. So I interviewed him about how and why he did it.

In this episode:

• Why he choose Rust of all languages
• Rollout strategies (incremental vs all at once)
• How he prevented regressions
• Steering agents and which models he used
• Career lessons and engineering advice

Where to watch:

• YouTube - youtube.com/watch?v=PLMOVl…
• Spotify - open.spotify.com/episode/4zthBK…
• Apple Podcasts - podcasts.apple.com/us/podcast/the…
• Transcript - developing.dev/p/e073-stephen…

Thank you to the sponsor of this episode for supporting my work:

• WorkOS: makes your app Enterprise Ready with easy to use APIs to add SSO, SCIM, RBAC, and more in just a few lines of code, check them out at workos.com

Chapters:

00:00 Intro
01:06 Why the Copilot runtime needed a Rust port
05:38 Why he chose Rust
11:28 Discussing rollout strategies
21:57 How he caught regressions
32:08 Guiding the agents
42:11 Catching regressions before prod
45:16 Which models he used
50:03 The end benefit and costs
01:03:24 When to do a full rewrite
01:06:40 Career learnings on the way to Distinguished
01:16:00 Top technical book recommendation
01:17:49 Advice for young engineers
01:21:00 Outro
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David Pine@davidpine7
Nov 3
🤬 Tired of paying to edit a #PDFs, enjoy FreeDF.

🤓 A spec-compliant, feature-complete, self-deploying PWA built with modern C# compiling to WASM to create this editor:

😎 ievangelist.github.io/FreeDF/
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David Pine retweeted
Sarah Drasner
@sarah_edo
Nov 2
Use AI as your research assistant, not your brain.
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David Pine@davidpine7
Oct 30
💭 An API, a container, and a configuration parameter are different things.

Aspire models each as a resource so they can belong to the same application model.

@aspiredotdev glossary | 3/40

aspire.dev/hub/glossary/r…

#Aspire #SoftwareArchitecture
Dark-themed Aspire glossary image titled "Resource," with the Aspire logo at the top right. Defines a building block in the Aspire application model, such as a service, container, executable, cloud resource, or parameter. Lists projects, containers, executables, cloud resources, and parameters, emphasizing that not every resource is a running process. The practical example identifies an API, its PostgreSQL database, and the database password parameter as three different resources in one AppHost.
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Aspire 💫
@aspiredotdev
Oct 30
Starting soon - #AspiriFridays giving you a sneak peek at our brand new dashboard experience coming in Aspire 17! We'd love your feedback - come join the chat and let us know what you think 💫 youtube.com/watch?v=azL0fC…
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David Pine@davidpine7
Oct 30
🤓 One repository doesn't mean one application process.

When your frontend, API, and database communicate across process or network boundaries, you're building a distributed app.

@aspiredotdev glossary | 2/40

aspire.dev/hub/glossary/d…

#Aspire #DistributedApp
Dark-themed Aspire glossary image titled "Distributed application," with the Aspire logo at the top right. Defines an application whose parts communicate across process or network boundaries. Explains that frontends, APIs, databases, caches, and queues have independent lifecycles. Aspire helps model, run, observe, and prepare them for deployment, while services still need to handle failures, retries, authentication, and consistency. The practical example connects a storefront, product API, database, and message queue.
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Milwaukee Brewers
@Brewers
Oct 29
THE WORLD SERIES CHAMPIONSHIP BELONGS TO MILWAUKEE, WISCONSIN!!!!!!!!!!!!!!!!!!!!!!!
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David Pine@davidpine7
Oct 27
Your architecture diagram can't start your app. Your #AppHost can.

Define services, connect dependencies, and orchestrate local development in code.

@aspiredotdev glossary | 1/40

aspire.dev/hub/glossary/a…

#Aspire #DevEx
Screenshot of the AppHost entry in the Aspire glossary, with the Aspire logo and wordmark at the top right on a dark background. AppHost is defined as "The executable application model that declares your services, resources, connections, and local orchestration," also called an orchestration project. It can be written in C# or supported guest languages through the Aspire Type System. It models resources and connections, orchestrates local development, and supplies a model to deployment integrations. AppHost runs alongside services; it does not handle users' requests. The practical example models a frontend, API, and PostgreSQL database, with a database reference and an explicit readiness dependency for the API.
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maddy montaquila
@maddymontaquila
Oct 27
😭😭😭😭😭 @mallibone “it’s ghost walks” @TechoramaNL
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Scott Hanselman 🌮
@shanselman
Oct 26
Theo - t3.gg
@theo
Oct 26
I don't know how to measure when things went wrong at Microsoft, but I think removing the audio mixer is a solid landmark
Community note
Recent versions of Windows have a volume mixer.

x.com/shanselman/sta…
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David Pine@davidpine7
Oct 27
Describe your talk. Let AI build the deck:

🤓 My Aspire deck template is prompt-ready: animations, transitions, section callouts, diagrams. All customizable.

Push changes. GitHub Actions rebuilds and deploys to Pages.

ievangelist.github.io/aspire-deck-te…

#Aspire #GitHubCopilot
Aspire deck template slide titled "Make it yours." Three cards explain the authoring files: configure your introduction in deck.config.json, write slides in slides.md, and add media to public/assets/. Purple accents and the Aspire logo frame the light-themed layout.Slide titled "Route a richer model." A fully revealed application diagram connects AppHost and Frontend to an API. The API reads from Cache, with a routed result arrow returning to the API. A caption explains that diagrams.json controls the model and its step-by-step reveals.
Slide titled "Choose how slides move." Text explains deck-wide defaults, chapter settings, and individual slide overrides. A syntax-highlighted JSON example sets fade as the default transition and slide for the code chapter. The most specific setting wins.Slide titled "From your repo to the room." Three numbered steps explain publishing: create a repository from the template, enable GitHub Actions in Pages settings once, and push changes. The workflow checks, builds, and publishes the deck. Closing text reads, "Your content. Your repository. Your presentation."
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David Pine@davidpine7
Oct 27
What if shipping code helped teach AI how to use it?

Nov 17, 6pm Central: join me at WI .NET User Group in Brookfield for Inside Aspire: The Architecture Behind the AI Loop.

Details: davidpine.dev/speaking?event…
Sneak peek: ievangelist.github.io/inside-aspire/

#Aspire #AI
Opening screen of Inside Aspire: The Architecture Behind the AI Loop. The Aspire logo appears above the headline and the tagline, "Ground decisions. Observe outcomes. Ship intent." David Pine's portrait and Microsoft's Aspire team affiliation appear on the right. Event details read Wisconsin .NET UG, November 17, 2026 at 6pm Central.
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David Pine@davidpine7
Oct 27
GitHub Actions produced the artifacts. Reviewing them shouldn't require a ZIP-file scavenger hunt.

I built Artifact Explorer: a Copilot canvas for previewing sites, test results, and terminal recordings alongside your PR.

awesome-copilot.github.com/extension/pr-a…

#GitHubCopilot #DevEx
Artifact Explorer canvas showing a GitHub Actions test-results artifact from microsoft/aspire. A file browser on the left lists results by operating system. The selected TRX file is rendered as a report on the right, with three tests: one passed, one failed, and one skipped, plus expandable failure details.
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David Pine retweeted
Sébastien Ros@sebastienros
Oct 24
What's your safe word?
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Ted L
@Zaneris
Oct 25
Passenger v0.2.0: Aspire and Docker Compose

Run, debug, Hot Reload and profile every service, see each request's SQL live, fix EF Core migrations before they fail. Still free and MIT.
passenger-ide.net/?v=0.2.0
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