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⚡ Bolt: scope lesson progress queries to specific lesson IDs - #102

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feat/optimize-lesson-progress-queries-7018557561057546950
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⚡ Bolt: scope lesson progress queries to specific lesson IDs#102
projectamazonph wants to merge 1 commit into
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feat/optimize-lesson-progress-queries-7018557561057546950

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💡 What: Narrows down user lesson progress queries from fetching all progress records globally to strictly filtering by the relevant lesson IDs using Prisma's in operator.

🎯 Why: For users with many courses or aging accounts, fetching the full historical progress on every dashboard, course list, or pending certificate render generates large unnecessary payloads and high memory consumption.

📊 Impact: Minimizes database response size and network transfer latency, scaling O(1) in the number of lessons in other courses.

🔬 Measurement: Verify query optimization using Prisma query logs or checking that allPublishedLessonIds constraint is applied on lessonId: { in: ... } filter.


PR created automatically by Jules for task 7018557561057546950 started by @projectamazonph

Limits the database queries in 'Dashboard', 'Courses' index, and 'Certificate Pending' pages to only fetch progress records matching the retrieved or relevant lesson IDs instead of loading the user's entire historical lesson progress.

Co-authored-by: projectamazonph <286085559+projectamazonph@users.noreply.github.com>
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Copilot AI review requested due to automatic review settings August 1, 2026 13:43
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📥 Commits

Reviewing files that changed from the base of the PR and between 9d0e0bf and 7ffd36c.

📒 Files selected for processing (3)
  • src/app/(dashboard)/courses/[courseSlug]/certificate/page.tsx
  • src/app/(dashboard)/courses/page.tsx
  • src/app/(dashboard)/dashboard/page.tsx

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Pull request overview

This PR reduces unnecessary LessonProgress reads by scoping progress queries to the specific lesson IDs needed by each dashboard surface (dashboard summary, course index progress, and pending-certificate lesson list). This aligns the queried progress set with the lessons actually rendered, cutting down DB payload size and memory use for users with large historical progress.

Changes:

  • Dashboard and course index pages now compute published lesson IDs from the fetched course/module/lesson tree and query lessonProgress with lessonId: { in: ... }.
  • Certificate pending-lessons list now limits completed-progress lookup to the lesson IDs being considered.
  • Adds empty-ID guards to avoid in: [] queries.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File Description
src/app/(dashboard)/dashboard/page.tsx Scopes lesson progress lookup to published lesson IDs used on the dashboard.
src/app/(dashboard)/courses/page.tsx Scopes lesson progress lookup to published lesson IDs used on the course catalog index.
src/app/(dashboard)/courses/[courseSlug]/certificate/page.tsx Scopes completed-progress lookup to the course’s lesson IDs used when computing “pending lessons”.

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Comment on lines +40 to +43
// Get user's lesson progress (optimized: scope query to published lessons only to avoid loading full history)
const allPublishedLessonIds = courses.flatMap((c) =>
c.modules.flatMap((m) => m.lessons.map((l) => l.id))
);
Comment on lines +33 to +36
// Get user's lesson progress (optimized: scope query to published lessons only to avoid loading full history)
const allPublishedLessonIds = courses.flatMap((c) =>
c.modules.flatMap((m) => m.lessons.map((l) => l.id))
);
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2 participants