How QA Survived a Big Bang Deployment: A Test Strategy White Paper for the GMS Project

This covers the QA strategy for managing risks that could arise during the construction of Oliveyoung's global WMS, GMS (Global Warehouse Management System). The focus was specifically on minimizing the risks of the Big Bang Deployment approach, which switches over all systems at once.

First, Risk Factors that could affect system stability were identified and used as the basis for test design. To prevent data integrity damage caused by interface spec mismatches or message queue delays, an Interface Spec and Feature List were established based on the core workflows of products, inbound, outbound, and delivery.

Testing was broken down into stages and carried out as follows.

• Feature Test: Rather than focusing on a simple pass rate, the focus was on defect detection rate to verify the robustness of the logic and error handling.
• Concurrency Test: To prevent Race Conditions or Deadlocks that could occur in inventory processing logic, scenarios involving multiple simultaneous requests were verified.

Through this strategic approach, data conflict issues that could occur in the production environment were blocked in advance, securing the stability of the system.