Code review is not a bug-catching net; machines are better at that. Its real payoff is shared understanding, design pressure, and a team that can safely change code none of them wrote alone. This is a guide to reviewing and being reviewed well: what humans should actually look for, how to write comments that land, why small pull requests are the highest-leverage habit, and how to keep review from becoming a bottleneck or a battleground.
Quality
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The Art of Code Review -
Testing Strategies That Actually Work Tests do not prove your code is correct; they buy you the confidence to change it. This is a working strategy for spending a finite testing budget well: what the pyramid gets right and where the testing trophy disagrees, why testing behavior beats testing implementation, the real cost of mocks and flakiness, and why coverage is a useful gauge and a terrible target.