Avoid request-time blog list refresh

[kentcdodds]

Summary

• Keep the blog list cache from becoming stale during public requests so request traffic does not trigger heavy MDX revalidation on the single production event loop.
• Preserve explicit content refresh/deploy cache generation as the path for updating the blog list cache.

Validation

• npm run typecheck --workspace kentcdodds.com
• npm run lint --workspace kentcdodds.com
• npm run test:backend --workspace kentcdodds.com
• npm run build --workspace kentcdodds.com

  

Summary by CodeRabbit

• Chores
  • Optimized blog content caching configuration to improve cache freshness and performance.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 74ce5db2-aeae-4963-8f1c-93c334960426

📥 Commits

Reviewing files that changed from the base of the PR and between 18541c9 and facffce.

📒 Files selected for processing (1)

• services/site/app/utils/mdx.server.ts

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📝 Walkthrough

Walkthrough

A new internal constant blogListTTL is introduced in mdx.server.ts, set to defaultStaleWhileRevalidate. The getBlogMdxListItems function is updated to use blogListTTL as the default ttl for cached blog list entries instead of defaultTTL.

Changes

Blog List Cache TTL

Layer / File(s)	Summary
blogListTTL constant and default wiring services/site/app/utils/mdx.server.ts	Defines blogListTTL = defaultStaleWhileRevalidate and sets it as the default ttl in getBlogMdxListItems, replacing the previous defaultTTL default.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A rabbit hops through cached blog rows,
And tweaks the TTL as the stale wind blows.
blogListTTL now leads the way,
SWR's the default of the day!
🐇✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main change: updating the blog list cache TTL to prevent request-time refresh and avoid unnecessary revalidation.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cursor/blog-cache-ttl-hotfix-880b

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