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⚡ Bolt: Combine multiple iterations over session.usageRecords#78

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bolt-perf-reduce-loops-sessions-15505403709881285707
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⚡ Bolt: Combine multiple iterations over session.usageRecords#78
seonghobae wants to merge 1 commit into
mainfrom
bolt-perf-reduce-loops-sessions-15505403709881285707

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@seonghobae

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💡 What

Combined multiple .reduce() and .map() iterations over session.usageRecords into a single for...of loop in two dashboard session route handlers.

🎯 Why

In both packages/web/src/app/api/orgs/[orgSlug]/dashboard/sessions/route.ts and packages/web/src/app/api/orgs/[orgSlug]/dashboard/sessions/[sessionId]/route.ts, the code was iterating over the usageRecords array 3 to 4 separate times per session to calculate total input tokens, output tokens, cost, and to map the usage timeline. By combining these into a single pass, we reduce O(4N) iterations to O(N), which minimizes CPU overhead and reduces intermediate array allocations, improving endpoint performance for heavily populated sessions.

📊 Impact

Reduces iteration overhead by 66-75% when calculating session totals and timelines. Memory overhead is also slightly improved since intermediate reducer returns are bypassed.

🔬 Measurement

Run pnpm --filter @argos/web test and navigate to the dashboard sessions route to verify data correctness and ensure the timeline renders as expected. Tests passed locally.


PR created automatically by Jules for task 15505403709881285707 started by @seonghobae

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ℹ️ Review info
⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 08a07da2-095b-4f87-922d-64b86dbcf3e7

📥 Commits

Reviewing files that changed from the base of the PR and between 220b497 and 6d9fa93.

📒 Files selected for processing (2)
  • packages/web/src/app/api/orgs/[orgSlug]/dashboard/sessions/[sessionId]/route.ts
  • packages/web/src/app/api/orgs/[orgSlug]/dashboard/sessions/route.ts
✨ Finishing Touches
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch bolt-perf-reduce-loops-sessions-15505403709881285707
✨ Simplify code
  • Create PR with simplified code
  • Commit simplified code in branch bolt-perf-reduce-loops-sessions-15505403709881285707

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@seonghobae

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최신 upstream/main 기준으로 이 PR 브랜치(bolt-perf-reduce-loops-sessions-15505403709881285707)는 93개 파일의 stale diff를 포함합니다. 특히 .claude agent/skill 파일 삭제와 오래된 lockfile/env/code 변경이 섞여 있어 그대로 유지하거나 upstream에 올리면 이미 반영된 변경을 되돌릴 위험이 큽니다.

현재 큐는 upstream #30 → upstream #21 순서로 정리 중입니다. 이 PR의 아이디어가 여전히 필요하면 최신 upstream/main에서 단일 목적 브랜치로 깨끗하게 다시 추출하겠습니다. stale PR로 닫습니다.

@seonghobae seonghobae closed this Jun 19, 2026
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