Skip to content

⚡ Bolt: Optimize user lesson progress queries on dashboard and courses pages #100

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
projectamazonph wants to merge 1 commit into
base: main
Choose a base branch
from
Open

⚡ Bolt: Optimize user lesson progress queries on dashboard and courses pages #100

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
17 changes: 12 additions & 5 deletions src/app/(dashboard)/courses/page.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -37,11 +37,18 @@ export default async function CoursesIndexPage() {
},
});

// Get user's lesson progress
const lessonProgress = await db.lessonProgress.findMany({
where: { userId: user.id, deletedAt: null },
select: { lessonId: true, status: true },
});
// Get all lesson IDs across the fetched courses
const allLessonIds = courses.flatMap((c) => c.modules.flatMap((m) => m.lessons.map((l) => l.id)));

// Bolt optimization: Scope lesson progress queries to the relevant courses' lesson IDs.
// This prevents loading the user's entire history, reducing database payload size
// and lowering memory footprint.
const lessonProgress = allLessonIds.length > 0
? await db.lessonProgress.findMany({
where: { userId: user.id, lessonId: { in: allLessonIds }, deletedAt: null },
select: { lessonId: true, status: true },
})
: [];
const progressMap = new Map(lessonProgress.map((p) => [p.lessonId, p.status]));

return (
Expand Down
17 changes: 12 additions & 5 deletions src/app/(dashboard)/dashboard/page.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -30,11 +30,18 @@ export default async function DashboardPage() {
},
});

// Get user's lesson progress
const lessonProgress = await db.lessonProgress.findMany({
where: { userId: user.id, deletedAt: null },
select: { lessonId: true, status: true },
});
// Get all lesson IDs across the fetched courses
const allLessonIds = courses.flatMap((c) => c.modules.flatMap((m) => m.lessons.map((l) => l.id)));

// Bolt optimization: Scope lesson progress queries to the relevant courses' lesson IDs.
// This prevents loading the user's entire history, reducing database payload size
// and lowering memory footprint.
const lessonProgress = allLessonIds.length > 0
? await db.lessonProgress.findMany({
where: { userId: user.id, lessonId: { in: allLessonIds }, deletedAt: null },
select: { lessonId: true, status: true },
})
: [];
const progressMap = new Map(lessonProgress.map((p) => [p.lessonId, p.status]));

// Compute aggregate stats
Expand Down