feat: blog post cold start improvements

[levivannoort]

What does this PR do?

Adds a new blog to the website.

Test Plan

N/A

Related PRs and Issues

N/A

Have you read the Contributing Guidelines on issues?

Yes

Summary by CodeRabbit

• Documentation
  • Added a new author profile for Levi van Noort.
  • Published a blog post detailing cold-start performance work for Appwrite Sites, including observed bottlenecks, experimental optimizations (faster extraction and reduced runtime footprint), measured improvements, and redeployment instructions.
  • Included quantified results and a “what’s next” section outlining future optimization plans.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: c6a68a03-2284-40c0-a8d7-f6b38038b362

📥 Commits

Reviewing files that changed from the base of the PR and between dc75779 and 7bf0c31.

📒 Files selected for processing (1)

• src/routes/blog/post/reducing-cold-starts-appwrite-sites/+page.markdoc

✅ Files skipped from review due to trivial changes (1)

• src/routes/blog/post/reducing-cold-starts-appwrite-sites/+page.markdoc

---

Walkthrough

Adds two new Markdoc pages under src/routes/blog: an author profile for Levi van Noort with frontmatter metadata (layout, name, slug, role, bio, avatar), and a blog post "How we reduced cold start times on Appwrite Sites" with frontmatter and content describing observability, igzip-based extraction optimization, Node.js file-tracing to reduce artifacts, measured template size and cold-start reductions (reported ~30–50%), redeploy instructions, and next steps. Both files are new additions; no existing files were modified.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'feat: blog post cold start improvements' directly relates to the main changes: adding a new blog post about cold start optimizations and creating an author profile page.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch CLO-4110

📝 Coding Plan

• Generate coding plan for human review comments

Warning

Tools execution failed with the following error:

Failed to run tools: Stream setup permanently failed: 13 INTERNAL: Received RST_STREAM with code 2 (Internal server error)

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[coderabbitai]

🧹 Nitpick comments (1)

src/routes/blog/post/reducing-cold-starts-appwrite-sites/+page.markdoc (1)

48-48: Minor: Inconsistent dash formatting.

The sentence has inconsistent spacing around dashes: "download phase - previously" (space-dash-space) vs "steps-dropped" (no spaces). Consider using em-dashes consistently:

✏️ Suggested fix

-Those smaller artifacts translated directly into faster cold starts. With build outputs reduced by up to 99%, the download phase - previously one of the more costly steps-dropped from multiple seconds to just 100–200 milliseconds. Extraction saw a similar improvement, going from regular 4–7 second spikes down to around 200–400 milliseconds. Together, these two phases went from dominating the cold-start timeline to being barely noticeable.
+Those smaller artifacts translated directly into faster cold starts. With build outputs reduced by up to 99%, the download phase—previously one of the more costly steps—dropped from multiple seconds to just 100–200 milliseconds. Extraction saw a similar improvement, going from regular 4–7 second spikes down to around 200–400 milliseconds. Together, these two phases went from dominating the cold-start timeline to being barely noticeable.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@src/routes/blog/post/reducing-cold-starts-appwrite-sites/`+page.markdoc at
line 48, The sentence has inconsistent dash spacing ("download phase -
previously" vs "steps-dropped"); update the punctuation in the Markdoc content
so both occurrences use a consistent em-dash style (e.g., change "download phase
- previously" to "download phase—previously" and "steps-dropped" to
"steps—dropped") ensuring the same em-dash usage across the paragraph.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In `@src/routes/blog/post/reducing-cold-starts-appwrite-sites/`+page.markdoc:
- Line 48: The sentence has inconsistent dash spacing ("download phase -
previously" vs "steps-dropped"); update the punctuation in the Markdoc content
so both occurrences use a consistent em-dash style (e.g., change "download phase
- previously" to "download phase—previously" and "steps-dropped" to
"steps—dropped") ensuring the same em-dash usage across the paragraph.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: bfeea003-300d-4c67-9e3b-dba3340513a1

📥 Commits

Reviewing files that changed from the base of the PR and between 0154be8 and dc75779.

⛔ Files ignored due to path filters (3)

• bun.lock is excluded by !**/*.lock
• static/images/avatars/levi.png is excluded by !**/*.png
• static/images/blog/reducing-cold-starts-appwrite-sites/cover.png is excluded by !**/*.png

📒 Files selected for processing (2)

• src/routes/blog/author/levi-van-noort/+page.markdoc
• src/routes/blog/post/reducing-cold-starts-appwrite-sites/+page.markdoc

[greptile-apps]

Greptile Summary

• Adds a new blog post on Appwrite Sites cold-start optimizations (igzip, node file tracing) along with the required cover/chart images and the updated Image.svelte contain mode used to display the chart screenshots without forcing a 16:9 crop.
• static/images/avatars/levi.png is committed and cache-hashed but is not referenced by the existing author profile (levi-van-noort.png), leaving it as an unreachable asset.
• The Image.svelte change is clean: title=\"contain\" suppresses the tooltip and removes aspect-video object-cover, falling back gracefully for all other images.

Confidence Score: 5/5

Safe to merge — only P2 findings, no logic bugs or security issues.

All changes are additive (new blog post, new images, new Image.svelte feature flag). The only finding is an unreferenced image asset, which is cosmetic. No functional regressions identified.

static/images/avatars/levi.png — check whether this should replace the avatar reference in the author profile.

Important Files Changed

Filename	Overview
src/routes/blog/post/reducing-cold-starts-appwrite-sites/+page.markdoc	New blog post on cold-start improvements; references two correctly-uploaded images, uses the existing levi-van-noort author slug.
src/markdoc/nodes/Image.svelte	Adds contain mode: when title="contain", the aspect-video object-cover classes are dropped and the title attribute is suppressed — a clean, well-scoped change.
.optimize-cache.json	Adds hash entries for the three new blog images and the new levi.png avatar; mechanical update consistent with other entries.
static/images/avatars/levi.png	New avatar image added but not referenced anywhere — the existing author profile at src/routes/blog/author/levi-van-noort/+page.markdoc still points to levi-van-noort.png.

_{Reviews (11): Last reviewed commit: "chore: run bun run optimize to update as..." | Re-trigger Greptile}

[atharvadeosthale]

@copilot run bun run optimize and push

[Copilot]

@copilot run bun run optimize and push

Done in 6e99f84. The script ran successfully and updated the optimize cache with the new avatar image.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/appwrite/specs/tarball/095d750
  • Triggering command: /home/REDACTED/.bun/bin/bun bun install (http block)
  • Triggering command: /home/REDACTED/.bun/bin/bun bun add --os=linux --cpu=x64 sharp (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)