Project Background
A global bank undertook a major project to revamp its digital banking platform to enhance customer experience and security. The project faced complexities due to multiple legacy systems, stringent regulatory requirements, and the need for high security and uptime.
Challenge
- Integrating new features without disrupting existing services.
- Maintaining strict compliance and security standards.
- high availability and performance during peak hours.
Solution – Robust Software Architecture Design
1. Microservices Architecture
The platform was broken down into independent microservices, each responsible for a specific business capability (e.g., order management, route optimization, driver tracking). This decoupled architecture allowed for independent scaling of services.
2. Event-Driven Communication
Microservices communicated via an event-driven architecture using message queues (Kafka). This ensured loose coupling and resilience, as services could react to events asynchronously.
3. High Availability and Fault Tolerance
- Redundant Systems: Services were deployed across multiple availability zones in AWS, reducing the risk of downtime due to hardware failures.
- Auto-Scaling: Services scaled automatically based on demand, ensuring optimal performance during traffic surges.
- Circuit Breaker Pattern: Implemented to prevent cascading failures during service outages, providing system stability.
4. Monitoring and Observability
Tools like Prometheus and Grafana were integrated for monitoring, logging, and alerting. This provided visibility into system health and performance, enabling proactive issue resolution.
Outcome
- Achieved 99.99% uptime, handling a 3x increase in traffic during peak times.
- Faster feature releases with microservices allowing smaller, isolated changes.
- Improved customer experience with real-time tracking and accurate updates.