The full name of svn is subversion, which is a version control system. It is an open source version control system. Through the efficient management of the branch management system, in short, it is used for multiple people to jointly develop the same project. Share resources and achieve ultimate centralized management.
#The full name of SVN is Subversion, which is a version control system. It is one of the most popular open source version control systems. As an open source version control system, Subversion manages data that changes over time. This data is placed in a central repository (Repository). This archive is much like a regular file server, but it remembers every file change. This allows you to restore a file to an older version or browse the file's change history. Subversion is a general-purpose system that can be used to manage any type of file, including program source code.
SVN adopts a client/server system. Various versions of the project are stored on the server. The program developer will first obtain the latest version of the project from the server and copy it to the local machine, and then On this basis, each developer can carry out independent development work on his own client and can submit new code to the server at any time. Of course, you can also obtain the latest code on the server through update operations to maintain consistency with the versions used by other developers. [3]
There are two types of SVN clients, one is Web-based WebSVN, etc., and the other is client software represented by Tortoise SVN. The former requires the support of a web server, and the latter requires users to install the client locally. Both types have free open source software for use. SVN also stores version data in two ways: BDB (a transaction-safe table type) and FSFS (a storage system that does not require a database). Because the BDB method may lock the data when the server is interrupted, the FSFS method is safer.
SVN Advantages
1. Storage
SVN server has the advantages of data storage that CVS has, such as information resources will form resources after storage The tree structure is convenient for storage, data is generally not lost, and it has its own characteristics. SVN uses relational databases and binary storage methods to solve the problem of being unable to read and write the same file at the same time, and at the same time adds its own unique "zero or one" principle.
2. Speed
Compared with people’s initial CVS, SVN has greatly improved in terms of speed. Because the SVN server only supports the transmission of a small amount of information and resources, it supports offline mode more than other systems, thus avoiding network congestion.
3. Security
SVN is a technically safer product that combines both system and control aspects. On the one hand, the security functions of the overall system can be effectively distributed among the branch systems, thereby ensuring the normal operation of the branch systems, so that each branch system can complement each other. Finally, the security of the system as a whole can be guaranteed, and the ultimate pursuit can be achieved through the principle of balance. security purposes.
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