Why it matters

Every engineering team does code review. Doing it well vs badly is a huge productivity difference. Learning the patterns pays back constantly.

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The architecture

Reviewer goals: catch bugs, verify correctness, ensure maintainability, share knowledge, enforce style.

Good code reviewSmall PRsreviewableActionable commentswith reasoningFast turnaroundkeeps flowReviewer respects author's time; author welcomes feedback; both learn
Code review culture.
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How it works end to end

Small PRs get reviewed thoroughly and quickly. Large PRs get rubber-stamped.

Comment style: explain why, suggest fixes, distinguish blockers from nits.

Author response: address every comment. Push back with reasoning if disagreeing.

Automated first: linters, tests, formatters catch mechanical issues so review can focus on logic.