Infrastructure Challenges
Challenges
- 10x–100x traffic spikes on sale events
- Cart latency directly impacts conversion rates
- PCI-DSS for payment processing at every touchpoint
- Global inventory synchronisation in real time
- High CDN and media storage costs
- Microservices sprawl across dozens of teams
CloudFormation Solves
- Auto Scaling + ALB with target tracking policies
- CloudFront + ElastiCache Redis for sub-50ms loads
- PCI-DSS policy scanning before every deploy
- DynamoDB Global Tables for multi-region inventory
- S3 lifecycle rules for media cost management
- EKS canvas for microservices architecture design
Key Architecture Patterns
1
Storefront — Global Delivery
CloudFront CDN → ALB → ECS/EKS → ElastiCache Redis → Aurora read replicas. Auto-scales from 100 to 100,000 concurrent users automatically.
2
Order Processing Pipeline
API Gateway → SQS FIFO → Lambda → Aurora + DynamoDB. Kinesis streams order events to analytics and fraud detection in real time.
3
Peak Event Scaling
Predictive Auto Scaling pre-warms capacity before flash sales. Scheduled scale-down overnight reduces compute costs by 60%.
4
Product Search & Recommendations
OpenSearch for full-text product search, SageMaker personalisation model, and ElastiCache for search result caching.
Business Outcomes
5ms
Cart API response time
100x
Traffic spike capacity
40%
Cloud cost reduction
99.99%
Checkout availability
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