Code reviews don't have to be exhausting marathons. After reviewing thousands of pull requests, I've distilled the process into five quick checkpoints that catch most issues before they hit production.
1. The "Why" Test (60 seconds)
Can you understand why this change exists from the PR description? If not, ask. Context prevents future confusion and helps with debugging months later.
2. Error Handling Scan (90 seconds)
Skim for try-catch blocks, null checks, and edge cases. Most production bugs come from missing error handling, not logic errors.
3. The Delete Check (30 seconds)
Look for what was removed. Deleted code can break dependencies in unexpected ways. A quick scan saves hours of debugging.
4. State Management Reality Check (60 seconds)
Does this change introduce new state? If yes, trace how it's updated and accessed. Race conditions and stale state are silent killers.
5. The "Merge Tomorrow" Question (60 seconds)
Would you be comfortable merging this if the author disappeared? If there's anything unclear, flag it now.
This isn't about perfection—it's about catching the high-impact issues quickly. You can always do deeper reviews for critical systems, but this checklist prevents 80% of the bugs that slip through rushed reviews.
The best code reviews are fast, focused, and kind. Save the energy for the tricky stuff.
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