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Git Essentials ??? Second Edition

You're reading from   Git Essentials ??? Second Edition Create, merge, and distribute code with Git, the most powerful and flexible versioning system available

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781787120723
Length 238 pages
Edition 2nd Edition
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Ferdinando Santacroce Ferdinando Santacroce
Author Profile Icon Ferdinando Santacroce
Ferdinando Santacroce
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Toc

Git doesn't use deltas

Now it's time to investigate another well-known difference between Git and other versioning systems. Take Subversion as an example: when you do a new commit, Subversion creates a new numbered revision that only contains deltas between the previous one; this is a smart way to archive changes to files, especially among big text files, because if only a line of text changes, the size of the new commit will be much smaller.

Instead, in Git even if you change only a char in a big text file, it always stores a new version of the file: Git doesn't do deltas (at least not in this case), and every commit is actually a snapshot of the entire repository.

At this point, people usually exclaim: "Gosh, Git waste a large amount of disk space in vain!". Well, this is simply untrue.

In a common source code repository, with a certain amount of commit...

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