Great reviews catch risks early without slowing the team. Here’s a concise playbook you can drop into your workflow tomorrow.
What reviewers optimize
- Correctness and risk: bugs, data corruption, security gaps.
- Alignment: architecture boundaries, conventions, and product acceptance criteria.
- Maintainability: clarity, tests, and observability hooks.
Reviewer checklist
- Scope small PRs (<400 lines touched) or ask for a split.
- Read the intent first (issue, design doc, PR description).
- Check interfaces and contracts before implementation details.
- Look for testing deltas: missing edge cases, flaky patterns, no regression test for the bug fixed.
- Verify observability: logs/metrics/traces for new flows or failure paths.
Author habits that speed things up
- Write a crisp PR description: problem, approach, trade-offs, testing.
- Add screenshots or clips for UI changes; link to metrics for perf changes.
- Flag areas where you want extra scrutiny.
- Keep commits reviewable: logical chunks with passing tests.
Making decisions
- Prefer blocking comments only for correctness or safety; use non-blocking for style.
- When you disagree, suggest an alternative or ask for data.
- Capture outcomes in the PR summary or an ADR if architectural.
Metrics to watch
- Time to first response.
- Review depth: number of substantive comments vs. nits.
- Defects found post-merge.
- PR size distribution.
Anti-patterns
- Drive-by LGTM without reading.
- Perfectionism that ignores business context.
- Piling on nits without auto-formatters/linters in place.
- Unclear ownership: who can approve? who is responsible for risk?
Lightweight template (reuse in your repo)
## Context
## Changes
## Risks
## Tests
## Screenshots/metrics
## Notes for reviewers
Code reviews are a skill. Practice deliberate habits, measure the loop, and you’ll ship faster with fewer surprises.
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