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Xiaobian to share with you what the difference between svn and git, I believe most people do not know how, so share this article for your reference, I hope you have a lot of harvest after reading this article, let us go to understand it together!

What is the difference between svn and git?

Difference between GIT and SVN

GIT is not just a version control system, it is also a content management system (CMS), work management system, etc. If you are a person with a background in SVN, you need to make some mental shifts to accommodate some of the concepts and features provided by GIT.

GIT is distributed, SVN is not:

This is the core difference between GIT and other non-distributed version control systems such as SVN, CVS, etc. If you can understand the concept, you're halfway there. One thing to note is that GIT is not the first or only distributed version control system available today. Some systems, such as Bitkeeper, Mercurial, etc., also run in distributed mode. But GIT does this better and has more powerful features.

GIT, like SVN, has its own centralized repository or server. However, GIT tends to be used in a distributed mode, where each developer chects out code from a central repository/server and clones a repository of his own on his own machine. Suffice it to say that if you are stuck in a place where you cannot connect to the network, like on an airplane, in a basement, in an elevator, etc., you can still submit files, view version history, create project branches, etc. To some people, this may not seem like much use, but when you suddenly run into a no-network environment, this will solve your big problem.

Also, this distributed operating model is a huge boon to the open source software community. You don't have to make patches and send them by email, you just have to create a branch and send a push request to the project team. This keeps your code up-to-date and not lost in transit. GitHub.com is an excellent example of this.

There are rumors circulating that future versions of subversion will also be based on distributed patterns. But at least not yet.

2. GIT stores content as metadata, while SVN stores content as files:

All resource control systems hide the meta-information of files in folders such as.svn,.cvs, etc. If you compare the size of the.git directory to the size of the.svn directory, you'll see that there's a big difference. Because the.git directory is a clone repository on your machine, it has everything from the central repository, such as tags, branches, revision records, etc.

3. GIT branches differ from SVN branches:

Branches are nothing special in SVN, just another directory in the repository. If you want to know if a branch has been merged, you need to manually run a command like svn prop svn:mergeinfo to make sure the code has been merged. Thanks Ben for pointing out this feature. Therefore, it often happens that some branches are missed.

However, dealing with the ramifications of GIT is fairly simple and interesting. You can quickly switch between several branches from the same working directory. You can easily find unmerged branches, and you can merge them easily and quickly.

GIT does not have a global version number, whereas SVN has:

This is by far the biggest feature missing from GIT compared to SVN. As you know, SVN version numbers are actually snapshots of source code at any given time. I think it's the biggest single breakthrough in evolution from CVS to SVN. Because GIT and SVN are conceptually different, I don't know what features correspond to them in GIT. If you have any leads, please contribute them in the comments.

Update: Some readers have pointed out that we can use SHA-1 of GIT to uniquely identify a code snapshot. This is not a complete replacement for the easy-to-read version numbers in SVN. But the purpose should be the same.

5. The content integrity of GIT is better than SVN:

GIT content storage uses SHA-1 hash algorithm. This ensures integrity of the code content and reduces damage to the repository in the event of disk failures and network problems.

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