After Bob completes his work, he checks the file back in. Typically, this results in a new version of the file, version 6. Sometime later, Sue checks in her file.

Also, Git wasn't designed for a codebase that was so large, either in terms of the number of files and version history for each file, or in terms of sheer size, coming in at more than 300GB.

Git, the open source distributed software version control system pioneered by Linux founder Linus Torvalds in 2005, is now gaining real momentum with developers. But don’t count out rivals like ...