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Informations about the package eloquent-uuid
Eloquent Uuid
Simple laravel / eloquent behavior to use uuid as a primary key or as a separate field by listening to Eloquent's creating event.
Usage
You can define the field to store the uuid in as follows (default: primary key)
You can define the uuid version as follows (default: version 1)
currently this package only supports version 1 and 4
Querying by Uuid
currently this package only supports version 1 and 4
Chosing Uuid version.
1- uuid1() generates a UUID based on the current time and the MAC address of the machine.
Pros: Useful if you want to be able to sort your UUIDs by creation time. Cons: Potential privacy leakage since it reveals which computer it was generated on and at what time. Collisions possible: If two UUIDs are generated at the exact same time (within 100 ns) on the same machine. (Or a few other unlikely marginal cases.)
2- uuid2() doesn't seem to be used anymore.
3- uuid3() generates a UUID by taking an MD5 hash of an arbitrary name that you choose within some namespace (e.g. URL, domain name, etc).
Pros: Provides a nice way of assigning blocks of UUIDs to different namespaces. Easy to reproduce the UUID from the name. Cons: If you have a unique name already, why do you need a UUID? Collisions possible: If you reuse a name within a namespace, or if there is a hash collision.
4- uuid4() generates a completely random UUID.
Pros: No privacy concerns. Don't have to generate unique names. Cons: No structure to UUIDs. Collisions possible: If you use a bad random number generator, reuse a random seed, or are very, very unlucky.
5- uuid5() is the same as uuid3(), except using a SHA-1 hash instead of MD5. Officially preferred over uuid3().