Generate Persistent Unique Values in Laravel

Laravel Unique Values is a package that generates persistent unique values with support for concurrency. It supports features like concurrency and generator customizations, storing unique values in the database:

use JustBetter\UniqueValues\Support\UniqueValue;
 
$uniqueValue = UniqueValue::make()
    ->scope("unique-scope")
    ->generator(function (int $attempt): string {
        return match ($attempt) {
            0 => "unique-value",
            default => "unique-value-" . $attempt
        };
    })
    ->generate();

Running the code example would generate unique-value, unique-value-1, unique-value-2. The fourth attempt would throw an exception:

Failed to generate unique value after three attempts for scope "unique-scope"

You can see in the unique_values database table that it has three records for the above unique values:

The unique value generator also accepts an attempts() method (which is 3 by default)—when the maximum attempt count is reached, we will get the same exception as before based on the number of attempts passed.

You can also add a subject to retrieve a previously generated value for a subject

use JustBetter\UniqueValues\Support\UniqueValue;
 
$uniqueValue = UniqueValue::make()
    ->scope("unique-scope")
    ->subject("demo-subject")
    // ...

Using the subject, it will generate one unique value as seen in this database example:

If you were to call the above code again with a change in subject, the next unique value generated would be unique-scope-1:

#Main Features

• Generate unique values
• Support for concurrency
• Customizable generator
• Maximum attempts
• Support for subjects

You can learn more about this package and get full installation instructions on GitHub at justbetter/laravel-unique-values. You can install this package via Composer using the following command:

composer require justbetter/laravel-unique-values