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Add blog post: Day One in an Unknown Repo (application graph series) - #149

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Reshrahim merged 12 commits into
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nithyatsu-blog-outline-day-one-unknown-repo
Sep 30, 2026
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Reshrahim merged 12 commits into
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nithyatsu-blog-outline-day-one-unknown-repo

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@nithyatsu

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First post in the application graph series: "Day One in an Unknown Repo."

This replaces #147, which was opened from a fork. The content and commit history are the same.

What the post covers

A developer's first day with an unfamiliar repository: generating an application model with the Radius plugin for the GitHub Copilot app, then using the Application graph to understand the architecture and jump from nodes to source code.

  • Sample app: Online Boutique, with ten services in five languages and a Redis cache.
  • Series framing: this post is day one. It ends with a teaser for the next post, on reviewing AI-generated changes. Planned, Deployed, and Diff views are left for later posts.
  • Screenshots: the chat with the graph, the main Application graph, and a node's source code and app definition links.

Still to do

  • Add the demo video (the See it in action placeholder)
  • Remove draft: true from the front matter when ready to publish

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✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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nithyatsu and others added 9 commits September 29, 2026 16:17
Signed-off-by: Nithya Subramanian <nithyasu@microsoft.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Nithya Subramanian <nithyasu@microsoft.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
…mo, next-post teaser

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
@nithyatsu
nithyatsu force-pushed the nithyatsu-blog-outline-day-one-unknown-repo branch from efaff70 to 34336d7 Compare September 29, 2026 23:17

@Reshrahim Reshrahim left a comment

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Thanks for putting this together! Looks great!

Just left minor suggestions.

Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md
Comment thread radblog/content/posts/2026/day-one-unknown-repo/index.md Outdated
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
@Reshrahim
Reshrahim merged commit d382a77 into main Sep 30, 2026
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@Reshrahim
Reshrahim deleted the nithyatsu-blog-outline-day-one-unknown-repo branch September 30, 2026 20:10

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pr — 0429e4de Deployed Sep 30, 2026 by Reshrahim via Approval #2271
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2 participants