Overview

SVN (Subversion)

Stacks804

Followers629

Votes43

GitHub Stars614

Forks188

Gerrit Code Review

Stacks116

Followers223

Votes67

Gerrit Code Review vs SVN (Subversion): What are the differences?

Introduction

In this article, we will discuss the key differences between Gerrit Code Review and SVN (Subversion), two popular version control systems used in software development.

Integration with Git: Gerrit is built on top of Git, providing a code review workflow specifically designed for Git repositories. On the other hand, SVN is a centralized version control system that does not natively integrate with Git.
Code Review Workflow: Gerrit Code Review focuses heavily on code reviews, providing a powerful and flexible workflow for developers to review code changes before they are merged into the main codebase. This makes it easier to catch bugs, ensure code quality, and maintain a clean commit history. SVN, on the other hand, does not have a built-in code review workflow and relies on other tools or manual processes for code review.
Branching and Merging: Gerrit provides robust support for branching and merging, making it easier to manage concurrent development efforts and merge code changes across different branches. SVN also supports branching and merging, but it is generally considered less flexible and more cumbersome compared to Git-based systems like Gerrit.
Access Control: Gerrit offers fine-grained access control, allowing administrators to define permissions and restrictions at the project, branch, and even file level. This allows organizations to enforce stricter security policies and limit access to sensitive code or resources. SVN, on the other hand, has more limited access control capabilities and is primarily based on user-based permission settings.
Code Visibility: Gerrit offers developers a centralized platform to view, search, and navigate through code and commit history. It provides a web interface that makes it easy to inspect individual code changes and understand their context within the overall codebase. SVN, on the other hand, provides a more traditional file-based view of the code repository and lacks the same level of visibility and code navigation features as Gerrit.
Repository Size: Gerrit and Git both have a more efficient storage mechanism, compressing and storing the code repository in a more compact manner. SVN, being a centralized version control system, stores multiple copies of a file for each commit, which can lead to larger repository sizes over time.

In Summary, Gerrit Code Review is built on top of Git, provides a powerful code review workflow with branching and merging capabilities, fine-grained access control, enhanced code visibility, and efficient storage mechanisms. SVN, on the other hand, is a centralized version control system with limited code review capabilities, less flexible branching and merging, insufficient access control, and traditional file-based code visibility.

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Detailed Comparison

SVN (Subversion)	Gerrit Code Review
Subversion exists to be universally recognized and adopted as an open-source, centralized version control system characterized by its reliability as a safe haven for valuable data; the simplicity of its model and usage; and its ability to support the needs of a wide variety of users and projects, from individuals to large-scale enterprise operations.	Gerrit is a self-hosted pre-commit code review tool. It serves as a Git hosting server with option to comment incoming changes. It is highly configurable and extensible with default guarding policies, webhooks, project access control and more.
-	git repository hosting; pre-commit code review; commenting on diffs; updating a single commit with multiple patch sets; project-based access control; protecting repositories
Statistics
GitHub Stars 614	GitHub Stars -
GitHub Forks 188	GitHub Forks -
Stacks 804	Stacks 116
Followers 629	Followers 223
Votes 43	Votes 67
Pros & Cons
Pros 20 Easy to use 13 Simple code versioning 5 User/Access Management 3 Complicated code versionioning by Subversion 2 Free Cons 7 Branching and tagging use tons of disk space	Pros 14 Code review 12 Good workflow 11 Cleaner repository story 10 Open source 10 Good integration with Jenkins
Integrations
No integrations available	Git

What are some alternatives to SVN (Subversion), Gerrit Code Review?

Git

Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.

Code Climate

After each Git push, Code Climate analyzes your code for complexity, duplication, and common smells to determine changes in quality and surface technical debt hotspots.

Codacy

Codacy automates code reviews and monitors code quality on every commit and pull request on more than 40 programming languages reporting back the impact of every commit or PR, issues concerning code style, best practices and security.

Phabricator

Phabricator is a collection of open source web applications that help software companies build better software.

Mercurial

Mercurial is dedicated to speed and efficiency with a sane user interface. It is written in Python. Mercurial's implementation and data structures are designed to be fast. You can generate diffs between revisions, or jump back in time within seconds.

PullReview

PullReview helps Ruby and Rails developers to develop new features cleanly, on-time, and with confidence by automatically reviewing their code.

SonarQube

SonarQube provides an overview of the overall health of your source code and even more importantly, it highlights issues found on new code. With a Quality Gate set on your project, you will simply fix the Leak and start mechanically improving.

RuboCop

RuboCop is a Ruby static code analyzer. Out of the box it will enforce many of the guidelines outlined in the community Ruby Style Guide.

CodeFactor.io

CodeFactor.io automatically and continuously tracks code quality with every GitHub or BitBucket commit and pull request, helping software developers save time in code reviews and efficiently tackle technical debt.