About This Architecture

Multi-AZ AWS architecture with ALB routing traffic across ECS Fargate clusters in two availability zones, each running containerized API services. API containers access ElastiCache Redis for caching and RDS PostgreSQL for persistent data, with SSM Parameter Store managing secrets and CloudWatch Logs capturing observability. Cross-AZ replication ensures Redis and RDS standby instances provide failover resilience and zero-downtime deployments. Fork this diagram to customize subnets, container counts, or database instance types for your production workload.

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How do I design a highly available AWS architecture with ECS Fargate across multiple availability zones?

This diagram shows a production-ready multi-AZ AWS architecture where an Application Load Balancer distributes traffic to ECS Fargate clusters in two availability zones. Each AZ runs API containers that access shared ElastiCache Redis (with replica) and RDS PostgreSQL (with standby), ensuring automatic failover and zero-downtime resilience.