Why should we use the compressed type of data (.zip, .rar) when sending over the network?


With nowadays high speed Internet, many people, including me, don't want to compress then in-compress before sending file over the network. Especially with the development of cloud storage, now all you need is just throw the file/folder into the cloud and you're good to share.
But for some old system, or for big system which is under migrating to newer infrastructure, the compression of folder is still crucial.

Let's see why it is so important:
1) Compress into smaller size --> faster transfer.

2) Compress into format of one file --> Greatly improve copying/transfer speed compare to copying folders with many small files.

3) Keep the original metadata of file & folder.
Ex: creation date, author,...
(If you copy the whole folder without compressing, the creation will be the date you copy and the author is you, not the person who created those files)

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I will write more details once I have time.

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