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Step-by-step guide to provision an Ubuntu VPS, configure Nginx, PHP 8.4, MySQL, and deploy a Laravel application securely.

Let's consider a common scenario in an e-commerce system where two customers attempt to purchase the last available item simultaneously. Both customers check the inventory (showing 1 item), add it to their cart, and proceed to checkout

Imagine you're building an e-commerce application where a customer places an order. This process involves multiple database operations: reducing inventory count, creating an order record, processing payment, and updating the customer's purchase history