Code Review
The systematic examination of source code by one or more developers to identify bugs, security vulnerabilities, and improve code quality before merging into the main codebase.
Definicion
Code review is a software quality assurance practice where developers examine each other's code changes. Modern code review typically happens through pull requests on platforms like GitHub, GitLab, or Bitbucket. Reviews can be manual (done by human reviewers) or automated (using AI tools like diffray). The goal is to catch defects early, share knowledge across the team, and ensure code meets quality standards.
Por que es importante
Studies show that code review catches 60-90% of defects before they reach production. Beyond bug detection, reviews spread knowledge across teams, mentor junior developers, and maintain consistent coding standards. Companies like Google review every code change before merging.
Ejemplo
A developer submits a pull request with a new authentication feature. During code review, a reviewer notices a potential SQL injection vulnerability and requests changes before the code can be merged.