1/28/2024 0 Comments Mysql uuid![]() – are hard(er) to guess (example from an URL) – the keys are unique across tables, databases and servers UUIDs are a good alternative to AUTO_INCREMENT PRIMARY KEY and are used mainly because: The one that MySQL implements in the UUID() function is version 1 which is composed of the timestamp, UUID version and MAC address. But most of the time, using UUID as the primary key is a sign of pre-mature optimization and it's also a choice hard to revert afterward.UUIDs can have different underlying structure depending on the version. There are valid cases of choosing UUID e.g. And most applications are less complex than those issue tracking tools. Jira, Apple's Radar, Google's issue tracker, etc. In fact, all major issue tracking systems use an integer as the issue id. and issue id such as issue/123 is definitely more readable than issue/b1e92c3b-a44a-4856-9fe3-925444ac4c23. The tool likely will have at most 5 figure projects each containing 5 figure issues. Take the classic issue tracking/project management tool as an example. order #), inspected by the operation engineer, customer support etc.ĩ9.9% of the applications won't reach internet scale and they just consist of several models allowing CRUD operations, containing thousands of records. The primary key is not only used by the system, it's also exposed to the end user (e.g. Numbers are easy to write, easy to remember and easy to communicate. ![]() Why? Readability, and readability leads to simplicity. 95% of the time, the default choice should always be Auto Increment Integer. Attackers can also scan the integer range to explore leakage (though it shouldn't happen if ACL is implemented correctly).Īs listed above, there are Pros and Cons between the 2 approaches.
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