Files
nick-doc/Issues/ISSUE-123-backend-notification-unread-count-chatty-db-access.md
Siavash Sameni dceaf82934 audit: 2026-05-30 full-codebase audit — report, issues, docs, runbooks
Full-codebase-audit 2026-05-30 outputs:
- Audit report: 09 - Audits/Full Codebase Audit - 2026-05-30.md
- 81 issue files ISSUE-055..135 (decisions + 1 skipped no-brainer).
- Scanner docs from scratch (was zero): architecture, data model, API ref, payment
  flow, operations runbook + repo README.
- Doc-sync updates across API reference, data models, flows, design system.
- Secret Rotation Runbook (08 - Operations) for the exposed credentials.
- Reusable workflow guide (07 - Development) + .claude/workflows/full-codebase-audit.js.

Issues remain status:open intentionally — the code fixes are uncommitted-then-committed
working-tree changes per repo and aren't "resolved" until merged/deployed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-05-30 18:48:04 +04:00

1.2 KiB

issue, title, severity, domain, labels, status, created, source
issue title severity domain labels status created source
123 Backend: notification unread-count chatty DB access — 3 parallel countDocuments per event low Notification
performance
backend
database
open 2026-05-30 Full Codebase Audit 2026-05-30

Backend: notification unread-count chatty DB access — 3 parallel countDocuments per event

Severity: low Domain: Notification Labels: performance, backend, database

Description

NotificationService.ts:145 runs 3 countDocuments calls per unread-count request. When notification events are frequent, this creates a high volume of DB count queries. Under heavy load, these compete with write operations.

Options

  1. Cache per-user unread count in Redis, increment/decrement on events.
  2. Coalesce the 3 parallel countDocuments into fewer aggregations.
  3. Leave as-is (covered by existing index) and only optimize if hot.

Recommendation

Introduce a Redis-backed unread counter updated incrementally; until then, coalesce counts.

Affected Files

  • backend/src/services/notification/NotificationService.ts:145

References