Version library Subversion

Subversion is a centralized information sharing system. Its core isVersion LibraryTo store all the data.File treeStorage Data in the form-including files and directories, any numberClientYou can connect to the version library to read and write these files. By writing data, others can see this information; by reading data, they can see others' modifications.

Figure 2.1. A typical customer/Server System

So why is this interesting? After talking about this, it makes people feel like this is a common file server, but in fact, the version LibraryYesAnother type of file server, rather than the one you commonly use. The most special is subversion.Every change is recorded.Not only files but also directories, including adding, deleting, and reorganizing files and directories.

When a client reads data from the repository, it normally sees only the latest version of the filesystem tree. But the client also has the ability to viewPreviousStates of the filesystem. For example, a client can ask historical questions like, "What did this directory contain last Wednesday ?", Or "who was the last person to change this file, and what changes did they make ?" These are the sorts of questions that are at the heart of anyVersion Control System: Systems that are designed to record and track changes to data over time.