Four-service order system in Java/Spring Boot that never oversells: conditional SQL stock reservation, transactional outbox, idempotent inbox and compensating saga, validated by fault injection, contract tests and Playwright.
react java ecommerce angular typescript spring-boot thymeleaf simulation data-visualization full-stack fulfillment inventory-management three-js order-management e2e-testing vite react-three-fiber playwright multi-stack
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Updated
Oct 7, 2026 - Java