IT Services Circle

May 2, 2026 · Fundamentals

7 Recurring Mistakes I See in Every PR After Reviewing Over 1,000

After reviewing more than a thousand pull requests, the author identifies seven recurring problems—unreadable code, hidden error handling, thread‑safety oversights, N+1 database queries, hard‑coded configuration, ignoring failure paths, and overly large PRs—and explains why they matter and how to avoid them.