Virtual Banking Microservices
Event-driven banking platform with microservices architecture, async Kafka messaging, and AI-powered conversational assistant.
The Problem
Monolithic banking backends can't scale individual services independently. A spike in transaction processing shouldn't affect account lookups or user authentication.
Architecture & Approach
Event-driven microservices with Spring Boot and Kafka for decoupled, independently scalable banking operations with OAuth2 security and an embedded AI assistant.
Key Technical Decisions
Kafka over synchronous REST for inter-service communication
Eventual consistency is acceptable for banking ledgers, and decoupling prevents cascade failures. If the notification service goes down, transactions still process.
AI agent as a separate microservice
Allows independent scaling and model updates without redeploying core banking logic. The AI service can be versioned, A/B tested, and rolled back independently.
Results
Complete banking platform with transaction processing, account management, and AI assistant.