⚡ Bolt: optimize data fetching in project detail page#25
⚡ Bolt: optimize data fetching in project detail page#25aicoder2009 wants to merge 2 commits intomainfrom
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Co-authored-by: aicoder2009 <[email protected]>
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Pull request overview
This PR optimizes the project detail page’s client-side loading by fetching the project, the project’s lists, and the user’s full list catalog concurrently to reduce request waterfall latency.
Changes:
- Refactored
ProjectDetailPagedata fetching to run the threefetch()calls concurrently viaPromise.all. - Moved the fetch helper function into the
useEffectclosure. - Added a Jules “Bolt” learning note documenting the concurrency optimization pattern.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
src/app/projects/[id]/page.tsx |
Runs project + lists + all-lists fetches in parallel to reduce page load latency. |
.jules/bolt.md |
Documents the motivation and pattern for concurrent fetching with Promise.all. |
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| // Fetch data concurrently to reduce page load latency | ||
| const [projectResponse, listsResponse, allListsResponse] = await Promise.all([ | ||
| fetch(`/api/projects/${projectId}`), | ||
| fetch(`/api/projects/${projectId}/lists`), | ||
| fetch("/api/lists") | ||
| ]); | ||
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| // Parse JSON concurrently | ||
| const [projectResult, listsResult, allListsResult] = await Promise.all([ | ||
| projectResponse.json(), | ||
| listsResponse.json(), | ||
| allListsResponse.json() | ||
| ]); |
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Using Promise.all for all three fetches makes the whole load fail if any request rejects or JSON parsing fails (e.g., /api/lists transient 500), which is a behavior regression vs the prior sequential flow where the project could still render and only lists would be missing. Consider fetching/parsing the project first (or using Promise.allSettled) and only treating the project request as fatal; handle lists/all-lists failures independently (e.g., keep project visible and show a non-blocking error banner).
💡 What: Combined sequential
fetchrequests into a single concurrent execution usingPromise.allinsrc/app/projects/[id]/page.tsx. Additionally, moved the logic into theuseEffecthook to adhere to React hooks best practices.🎯 Why: Prevents a network request waterfall where project details, project lists, and all lists are fetched sequentially.
📊 Impact: Expected to reduce page load latency.
🔬 Measurement: Verify by loading a project detail page and comparing the latency against sequential loading.
PR created automatically by Jules for task 8927063821569846899 started by @aicoder2009