Developer details test suite for a high-concurrency Spring Boot e-commerce backend

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A developer documented the testing and quality engineering approach used in ShopEase, a Spring Boot 3.x e-commerce backend built on Java 17. The strategy spans unit and slice tests for controllers and services, integration tests for cross-component database flows, and concurrency tests that simulate multi-threaded contention to prevent inventory overselling. Load and stress tests run through a custom Java concurrency harness to measure throughput and failure rates under heavy traffic. The author reports that the suite achieved a 100% build success rate across modules and thread-safe inventory handling.

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