A demo Laravel app to demonstrate the dangers of using firstOrCreate in a queued environment

Read this blogpost on murze.be first to get familiar with the problem.

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Usage

To run this demo you'll need to have Redis installed

1. Clone the repo
2. Install the dependencies with composer install
3. Copy .env.example to .env
4. Create a racing_condition_demo database
5. Run php artisan key:generate
6. Run php artisan migrate
7. In a seperate terminal start Horizon with php artisan horizon
8. Run php artisan create-products

If you look in the products table of the database multiple records with the same uuid will have been created.