Demo Standardization Kit

[vlussenburg]

✨ PR Description

Purpose: Add order history functionality and API documentation to the e-commerce microservices system.

Main changes:

• Added GET /api/orders/history endpoint with database persistence in OrderController
• Implemented getOrderHistory() frontend function for retrieving and displaying user order history
• Added Swagger documentation using swagger-jsdoc and swagger-ui-express to document API endpoints
• Enhanced error handling in login process with specific error messages

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[chris-ghyzel-linearb]

/gs review

[gitstream-cm]

✨ PR Review

The PR adds database persistence and order history functionality across multiple services. However, there are potential concurrency and transaction consistency issues that need attention.

2 issues detected:

🐞 Bug - Multiple threads can simultaneously access and modify the same file without synchronization, leading to data corruption or lost billing records.

Details: The file-based billing queue system lacks proper synchronization. Concurrent requests could corrupt the JSON file when multiple threads simultaneously read, modify, and write the same user's billing data.
File: services/billing-csharp/Controllers/BillingController.cs

🐞 Bug - Billing operation succeeds but order storage can fail independently, leaving the system in an inconsistent state where users are charged without corresponding order records.

Details: The order placement logic charges the user first, then attempts to store the order. If order storage fails, the user has been charged but no order record exists, creating an inconsistent state.
File: services/orders-java/src/main/java/com/example/orders/controller/OrderController.java

Generated by LinearB AI and added by gitStream.
_{AI-generated content may contain inaccuracies. Please verify before using. We'd love your feedback! 🚀}