Background
The e-commerce platform’s monolithic architecture hit performance bottlenecks. After daily orders exceeded 500K, system response times increased significantly, with multiple outages during peak sales events.
Solution
Architecture Design
Based on Domain-Driven Design (DDD), we decomposed the system into 12 core microservices:
- Order Service: Order creation, payment, and refund flows
- Product Service: Product info, inventory, and pricing
- User Service: Authentication, authorization, and user profiles
- Recommendation Service: Collaborative filtering-based personalization
Tech Stack
- Languages: Go (high concurrency) + Java (business logic)
- Container orchestration: Kubernetes
- Service mesh: Istio
- Message queue: Apache Kafka
- Databases: MySQL + Redis + Elasticsearch
Results
- System throughput increased by 300%
- Zero downtime during peak sales events
- Deployment frequency improved from monthly to multiple times daily
- Mean time to recovery reduced from 2 hours to 15 minutes