The Last-Item-in-Stock Dilemma: How to Handle Errors with Technical Precision (409 vs 422)
Marte · 2025-08-29
Imagine the scene: a customer finds the perfect product in your online store. Only one unit left. They add it to the cart, enter their details and, on clicking "Buy now", get a vague "Error" message. What happened? Maybe another customer was a millisecond faster. Or they tried to buy an invalid quantity. For the user, the frustration is the same. For your system, the difference is huge.
