Does your online store sell products you no longer have in stock during traffic spikes?
It happens at the worst possible moment: you launch a Black Friday campaign or an influencer promotion. Traffic skyrockets, dozens of customers add the last product to their cart, and they pay for it at the exact same millisecond. Your platform accepts all the charges, but you only have one physical unit. The result is a logistical nightmare: manual refunds, lost banking fees, and furious customers destroying your reputation on social media.
The trap of delayed synchronization
Standard e-commerce plugins and basic ERPs update stock sequentially. When there is high concurrency, the database reads a "stock = 1" for multiple users before the first purchase manages to subtract the unit. If your architecture does not respect transactional atomicity, your catalog is a ticking time bomb.
Our solution: Concurrency Control Architecture
At LANZAESTUDIO, we redesign the logic of your database and develop a custom system that manages concurrent transactions with surgical precision. We implement transactional locking strategies (Pessimistic and Optimistic Locking) isolating purchase threads in milliseconds so that excess requests never throw your warehouse out of balance.
- Optimistic Locking: We control the versions of each row in your database to abort transactions if the stock changed during checkout.
- In-Memory Queue Manager: We use Redis to serialize massive purchase requests, processing them in a strict, real-time funnel.
- ACID Transactional Isolation: We reconfigure your relational engine to ensure that no dirty read allows an invalid order to be completed.
- Temporary Inventory Reservation: We program a microservice that sets aside stock for 10 minutes upon reaching checkout, automatically releasing it if the payment is not completed.
The Real Impact on Your E-commerce
- Zero overselling: Permanently eliminate the problem of selling out-of-stock items, saving your customer service department.
- Campaign scalability: Support thousands of simultaneous requests without collapses or financial discrepancies in your billing.
- Savings on fees: Stop losing money on payment gateway fees due to having to issue constant refunds to frustrated customers.