The Benefits of Code Review

Code review enables developers to collaborate, share new techniques, optimize code performance and monitor overall project quality.

Code review, as the name suggests, is the process in which one developer’s code is reviewed by a peer or superior. Code review examines design, complexity, naming conventions, and comments, automated tests. The primary benefit of code review is the time saved early in the development process to quickly locate and fix bugs. 

Beyond that, code review enables developers to collaborate, share new techniques, optimize code performance and monitor overall project quality. Code review saves time and fosters collaboration while ensuring consistency in code performance.

Goals of Code Review

The format and purpose of code review will vary by the coding environment, but there are primary goals that code review always aims to achieve. These are beneficial across companies and environments, and include:

  • Remove defects — The process of code sharing allows developers to catch defects early in the coding process or more easily fix bugs later in implementation.
  • Compliance — Code review helps developers to ensure that software is in compliance with enterprise coding standards. 
  • Consistency — Code review allows developers to collaborate so that there is consistent coding across all company software. 
  • Collaboration — The process of code review fosters a team environment and mutual trust within the company. 
  • Optimization — Code review allows developers to hone in and optimize software performance. This is especially important for young developers who are unaware of code optimization techniques to write clean code. 

Code review provides a fresh pair of eyes to help to eliminate mistakes that could lead to serious issues down the line. Both young developers and experienced developers gain the right feedback and insights to efficiently write clean code. 

Elements of Code Review

Code review involves developers reviewing code written by each other. This can be a senior developer or peer-to-peer review. Ideally, the reviewer is completely disengaged from the project and therefore an objective observer.

The reviewer will provide both positive and negative feedback to the original developer. Typically, there is a standard company or software checklist that the reviewer will cover to ensure standards are met.

Code review can take place at all stages of development, but is usually not used in small demo projects. The advantage of starting code review with the beginning of the project is that bugs and coding problems are generally less time-intensive and costly to fix early in coding.

Benefits of Code Review

Code review benefits the developers and helps them to improve skill, technique and broad understanding of all aspects of development. It also benefits companies by fostering collaboration, improving efficiency, and reducing costly errors. Most importantly, code review ensures top-quality code optimization through in-house teamwork. 

  1. Reduced Bugs

Reducing bugs is the first and obvious benefit of coder review. The amount of time and money saved through regular code reviews is enormous. Implementing regular code review will save the company crucial resources and ensure a smooth final product. 

  1. Project Quality

Every coding project will have a well-defined scope and required features, but it is not uncommon for a developer to misinterpret some requirement or feature. Code review keeps developers’ time focused on requirements, thereby ensuring project success with greatest efficiency. In addition, peer reviews ensure that the code meets all external regulations. 

  1. Better Estimates

By sharing the coding knowledge of the original developer with reviewers throughout the process, more members of the team gain insight into the original code. This enables the whole team to make better estimates about product optimization, development timeline, and required updates. The whole team is able to better understand known issues and areas of concern in the code base when planning for expansion.  

  1. Collaboration

With code review, no one team member is the single point of contact for any code. This not only fosters collaboration, but allows for time off. With no single developer solely responsible for the code, if one developer takes time off, the project can move ahead with another team member. This reduces delays, streamlines development, and builds a sense of teamwork. 

  1. Built-in Mentorship

Code review provides built-in mentorship for new developers. From impartial feedback to important techniques for code optimization a new developer received regular mentorship from the beginning. 

Likewise, as new techniques emerge, younger developers can train their superiors with the latest techniques and information. This two-way mentorship builds an environment for growth.

Summary of Code Review Benefits

Code review is an important business practice to effectively manage time and resources in any development team. In addition to catching bugs and adhering to the highest standards, code review develops trust and collaboration between team members and facilitates optimization, estimates, greatest efficiency and problem solving in further development. Utilizing code review is an essential step throughout the project development cycle. 


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