AWS Architecture Overview
This diagram illustrates a robust, scalable, and secure AWS-based architecture for our API service. The architecture leverages various AWS services to ensure high availability, performance, and security.
Cloud Architecture
Key Components
Networking
- VPC (Virtual Private Cloud): Provides an isolated network environment.
- Public Subnet: Houses public-facing components.
- Private Subnet: Contains the core application and data services, isolated from direct internet access.
- NAT Gateway: Allows outbound internet access from the private subnet.
- Application Load Balancer (ALB): Distributes incoming traffic across multiple targets in the private subnet.
Compute and Container Services
- ECS Fargate Service: Runs containerized applications without managing the underlying infrastructure.
- Public ECR Registry: Stores and manages Docker container images used by the ECS service.
Database and Caching
- RDS PostgreSQL: Managed relational database service for persistent data storage.
- ElastiCache Redis: In-memory caching to improve application performance.
Messaging and AI
- Amazon MQ (RabbitMQ): Managed message broker service for application decoupling.
- AWS Bedrock: Provides access to foundation models for AI and machine learning capabilities.
Security and Access Management
- Secrets Manager: Securely stores and manages sensitive information like API keys and database credentials.
- IAM Roles & Policies: Manages fine-grained access controls for AWS services and resources.
DNS and Routing
- Route 53: Manages domain names and routes incoming requests to the Application Load Balancer.
Data Flow
- Internet traffic is routed through Route 53 to the Application Load Balancer.
- The ALB forwards requests to the ECS Fargate service in the private subnet.
- The ECS service interacts with various backend services (RDS, Redis, RabbitMQ, AWS Bedrock) as needed.
- For outbound requests (e.g., pulling Docker images), traffic goes through the NAT Gateway.
Security Considerations
- The architecture follows AWS best practices for security, including the use of public and private subnets.
- Sensitive services are placed in the private subnet, inaccessible directly from the internet.
- IAM roles and policies ensure least-privilege access to AWS resources.
- Secrets Manager is used for secure storage and retrieval of sensitive information.
This architecture provides a scalable, secure, and highly available environment for hosting and managing API services, leveraging AWS's managed services to reduce operational overhead and improve reliability.