[Feat] Implement Post-Trade Event Processing using RocketMQ

[HminiL]

Is your feature request related to a problem? Please describe.

The current synchronous processing of post-trade operations (trade record storage, user notifications, etc.) presents the following issues:

• Increased trade processing time
• Post-processing failures affecting the trade process
• High coupling between systems
• Limited scalability

Describe the solution you'd like

Build event-driven system using RocketMQ for post-trade processing:

1. Core Features

• Publish trade events to RocketMQ
• Store trade records in DB (Consumer 1)
• Send user notifications (Consumer 2)

2. Key Requirements

• Asynchronous processing
• Error handling & retries
• Basic monitoring

Describe alternatives you've considered

• Synchronous processing: Simple but slower
• Kafka: More complex, higher throughput
• RabbitMQ: Simpler, lower throughput

Additional context

• Tech Stack: Spring Boot, RocketMQ
• Target Latency: < 1 second
• Implementation Priority: High