The Java driver on the other hand will return an object of type. For example, when you read a UUID from a MongoDB database using the C# driver, an object of type System.GUID will be returned.
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MongoDB itself stores them as Binary fields and when such Binary fields are accessed from software, MongoDB drivers usually convert their value as found in the database to language-specific GUID or UUID objects. MongoDB has built-in support for the GUID/UUID data type and most of the MongoDB drivers support GUIDs/UUIDs natively. (The example above is a random Version 4 UUID) MongoDB and GUID/UUID Support UUIDs are 128-bit values and are usually displayed as 32 hexadecimal digits separated by hyphens, for example: 176BF052-4ECB-4E1D-B48F-F3523F7F277F A GUID is one of many implementations of the UUID standard. Sometimes the term Globally Unique IDentifier ( GUID) is used to describe it. What is a UUID? What is a GUID?Ī Universally Unique IDentifier ( UUID) is a unique number used as an identifier in computer software. We will make you aware of those configurations and provide you with a set of best practices to follow. In this article, we will take a closer look at scenarios where working with GUIDs/UUIDs might become more complex. It is also very likely that your data gets corrupted over time and it will be very difficult to recover from such a disaster without having to restore your backups (you do backups on a regular basis, don’t you?).
you might no longer be able to match orders to customers. There are some scenarios however where you might run into unexpected issues that are very difficult to debug.Īs soon as you go multi-language with your deployments, you might discover that your applications no longer work as expected, e.g. In most cases, you will most likely be fine. It is very easy and convenient to start using GUIDs/UUIDs immediately without having to review the DB specification. MongoDB and the MongoDB drivers come with built-in support for the GUID/UUID data type. Software developers very often explicitly store those identifiers in the database and do not rely on identifiers generated by the database system. GUIDs are often being used to identify custom objects created in software.
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