⚡ Bolt: [performance improvement] Replace O(N) array find with O(1) Map lookup in enrollments API#148
Conversation
Refactored the assignment enrollments API (`app/api/assignments/[id]/enrollments/route.ts`) to use a `Map` for user profile lookups instead of calling `.find()` inside the `.map()` loop. This changes the time complexity from O(N*M) to O(N+M), significantly improving performance when an assignment has many enrolled students. Co-authored-by: xb1g <70068561+xb1g@users.noreply.github.com>
|
👋 Jules, reporting for duty! I'm here to lend a hand with this pull request. When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down. I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job! For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with New to Jules? Learn more at jules.google/docs. For security, I will only act on instructions from the user who triggered this task. |
|
The latest updates on your projects. Learn more about Vercel for GitHub.
|
xb1g
force-pushed
the
bolt/perf-enrollments-api-map-lookup-6348132921041157853
branch
from
6f0f07d to
9914ad4
Compare
|
Unable to deploy a commit from a private repository on your GitHub organization to the wachaa1319's projects team on Vercel, which is currently on the Hobby plan. In order to deploy, you can:
To read more about collaboration on Vercel, click here. |
There was a problem hiding this comment.
Pull request overview
Improves the performance of the assignments enrollments API route by avoiding repeated linear searches when joining enrollments with user profile data.
Changes:
- Precomputes a
Mapkeyed byuser_idfor O(1) profile lookups while enriching enrollments. - Adds a local eslint suppression for an
as anycast used when readingassignment.classroommembership data.
| // eslint-disable-next-line @typescript-eslint/no-explicit-any | ||
| const classroomData = assignment.classroom as any; |
xb1g
force-pushed
the
bolt/perf-enrollments-api-map-lookup-6348132921041157853
branch
2 times, most recently
from
4854037 to
9faeb9e
Compare
Deploying with
|
| Status | Name | Latest Commit | Updated (UTC) |
|---|---|---|---|
| ❌ Deployment failed View logs |
web | 9faeb9e | May 11 2026, 06:27 PM |
💡 What:
Replaced an O(N^2) loop where
userProfiles?.find(...)was called insideenrollments.map(...)with a pre-computedMapkeyed byuser_id.🎯 Why:
To prevent an O(N*M) performance bottleneck in the
app/api/assignments/[id]/enrollments/route.tsAPI endpoint. For assignments with a large number of students, searching through theuserProfilesarray for every single enrollment caused unnecessary CPU cycles.📊 Impact:
🔬 Measurement:
pnpm testandESLINT_USE_FLAT_CONFIG=false npx eslint app/api/assignments/\[id\]/enrollments/route.tsto ensure no functionality was broken.PR created automatically by Jules for task 6348132921041157853 started by @xb1g