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This article mainly introduces what guid refers to. It has certain reference value and can be used for reference by friends who need it. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

What does guid mean?

A globally unique identifier (GUID,Globally Unique Identifier) is a numeric identifier with a binary length of 128 bits generated by the algorithm. GUID is mainly used in networks or systems with multiple nodes and computers. Ideally, no computer or computer cluster will generate two identical GUID.

The total number of GUID reaches 2 ^ 128 (3.4 × 10 ^ 38), so the possibility of randomly generating two identical GUID is very small, but not zero. Therefore, the algorithms used to generate GUID usually include non-random parameters (such as time) to ensure that this repetition does not occur.

The word GUID sometimes refers specifically to Microsoft's implementation of the UUID standard.

On the Windows platform, GUID is widely used in Microsoft products to identify objects such as registry entries, class and interface identifiers, databases, system catalogs and so on.

Format

The format of GUID is "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", where each x is a hexadecimal number in the range of 0-9 or Amurf. For example, 6F9619FF-8B86-D011-B42D-00C04FC964FF is a valid GUID value.

Thank you for reading this article carefully. I hope the editor can share what guid refers to is helpful to everyone. At the same time, I also hope you can support us, pay attention to the industry information channel, and find out if you have any problems. Detailed solutions are waiting for you to learn!

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