Remove dead links from major-performance-breakthroughs-upgrade-guide.md

[justin808]

Summary

Removed two broken questlab.pro links that were causing markdown link check failures in CI.

Changes

• Removed Airbnb's RSC migration results section (dead link)
• Removed Meta's developer portal migration section (dead link)

Both links were returning Status: 0 in the markdown link checker, indicating they are no longer accessible.

Testing

The markdown link checker should now pass without these dead links.

🤖 Generated with Claude Code

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This change is 

Summary by CodeRabbit

• Documentation
  • Updated the React Server Components performance upgrade guide by removing certain migration case study references to streamline the documentation.

[coderabbitai]

Walkthrough

Two external case-study performance blocks are removed from the React Server Components section of the performance upgrade guide documentation: the Airbnb RSC migration results (3 metrics) and Meta developer portal migration (5 metrics). One Airbnb reference link remains.

Changes

Cohort / File(s)	Change Summary
Documentation updates docs/pro/major-performance-breakthroughs-upgrade-guide.md	Removed Airbnb RSC migration results block (3 metrics) and Meta developer portal migration block (5 metrics) from React Server Components section; retained one Airbnb geekyants.com link.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

• Straightforward documentation removal with no logic or structural changes; verification involves confirming only the intended case-study blocks were deleted.

Possibly related PRs

• Update RSC docs #1744: Main PR removes the same Airbnb and Meta RSC case-study blocks that were previously added/expanded in the React Server Components docs.
• Update v15 release notes #1753: Directly related; removes the same two external case-study metric blocks (Airbnb, Meta) from the same documentation file.

Suggested reviewers

• alexeyr-ci2
• AbanoubGhadban

Poem

🐰 A tidy warren is a happy warren,
Old case studies tucked away,
Outdated metrics now departed,
Docs spring-cleaned, fresh today!
🌱

Pre-merge checks and finishing touches

✅ 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 accurately describes the main change: removing dead links from the documentation file, which aligns with the changeset that removes two broken questlab.pro links.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch justin808/fix-dead-links

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 7afd66e and 7a9620f.

📒 Files selected for processing (1)

• docs/pro/major-performance-breakthroughs-upgrade-guide.md (0 hunks)

💤 Files with no reviewable changes (1)

• docs/pro/major-performance-breakthroughs-upgrade-guide.md

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[claude]

PR Review: Remove dead links from major-performance-breakthroughs-upgrade-guide.md

Summary

This PR removes two broken questlab.pro links from the performance upgrade guide documentation. The changes are straightforward and appropriate.

✅ Positive Aspects

1. Problem clearly identified: The PR correctly addresses dead links (Status: 0) that were causing markdown link check failures in CI
2. Clean documentation maintenance: Removing broken links improves documentation quality
3. No functional impact: This is purely a documentation fix with no code changes
4. Proper testing consideration: Noted that the markdown link checker should pass after these changes

📋 Code Quality

• Change scope: Appropriate - only removes the dead links without altering surrounding content
• Documentation flow: The remaining case studies (productonboarding.com and geekyants.com) still provide compelling evidence for RSC benefits
• Formatting: No formatting issues (this is a deletion-only change)

⚠️ Considerations & Suggestions

1. Alternative sources: Consider whether the Airbnb and Meta statistics could be sourced from alternative, more reliable links. These were compelling metrics:

   • Airbnb: 15% improvement in core web vitals, 23% reduction in TTFB
   • Meta: 30% bundle reduction, 60% TTI improvement, etc.

   If these statistics are valuable, you might:

   • Search for the original Airbnb/Meta blog posts or case studies
   • Use Wayback Machine to find archived versions
   • Contact the companies for alternative sources

2. Documentation note: The existing note on line 31-32 is still accurate and valuable:

   "Please note that only the first of these directly compares performance of equivalent applications with and without React Server Components."

   This remains true with the remaining case studies.

3. CHANGELOG consideration: According to CLAUDE.md, this might not require a CHANGELOG entry as it's a documentation fix (not a user-facing feature/bug fix). However, if users were relying on these links, you might consider mentioning it.

🔍 Verification Checklist

• ✅ No code changes (documentation only)
• ✅ No linting/formatting needed for deletions
• ✅ No test changes required
• ✅ File ends with newline (verified in file read)
• ⏳ CI markdown link check should pass (will be verified by CI)

🎯 Recommendation

APPROVE - This is a clean, necessary fix for broken documentation links. The PR is ready to merge once CI confirms the markdown link checker passes.

Optional follow-up: Consider searching for alternative sources for the removed statistics if they're deemed valuable for the documentation.

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Review generated using repository CLAUDE.md guidelines