This document provides an overview of the architecture for a crypto exchange platform. The architecture is designed to be scalable, secure, and highly available, leveraging various AWS services and Cloudflare for content delivery and security.
- Content Delivery Network (CDN): Distributes content to users with high availability and performance.
- Web Application Firewall (WAF): Protects the web application from common web exploits.
- Web Application (Frontend): The user interface of the exchange, hosted on AWS, possibly with some SSR.
- API Gateway: Manages and routes API requests to backend services.
- Backend Services (Auto Scaling Group): Scalable backend services that handle business logic.
- Order Matching Engine: Core component that matches buy and sell orders.
- User Data (RDS): Relational database for storing user information.
- Transaction Data (DynamoDB): NoSQL database for storing transaction records.
- Order Queue (SQS): Queue service for managing order processing.
- Wallet Service (Lambda Functions): Manages user wallets and interactions with blockchain nodes.
- Blockchain Nodes (EC2 Instances): Nodes that interact with various blockchains.
- Event Listener (Lambda Function): Listens for blockchain events and triggers necessary actions.
- Event Stream (Amazon Kinesis): Stream processing service for handling event data.
- Data Processor (Lambda Function): Processes event data and updates indexed data store.
- Indexed Data Store (DynamoDB): NoSQL database for storing indexed data for quick retrieval.
- Search Interface (OpenSearch Service): Provides search capabilities over indexed data.
- Monitoring & Logging (CloudWatch): Monitors and logs application performance and issues.
- Security Services (IAM, KMS): Manages identity, access, and encryption keys.
- VPC and Subnets: Virtual Private Cloud (VPC) and subnets for network isolation and segmentation.
- User Interaction: Users interact with the web application through the CDN and WAF.
- API Requests: The web application sends API requests to the API Gateway.
- Backend Processing: The API Gateway routes requests to backend services, which handle business logic and interact with the order matching engine.
- Order Management: Orders are placed in the order queue and processed by the order matching engine.
- Data Storage: User data is stored in RDS, while transaction data is stored in DynamoDB.
- Wallet Management: The wallet service manages user wallets and interacts with blockchain nodes.
- Event Handling: Blockchain events are captured by the event listener and processed through the event stream.
- Data Processing: The data processor updates the indexed data store, which is used by the search interface.
- Monitoring and Security: All components are monitored and logged using CloudWatch, with security managed by IAM and KMS.
- Web Application (Frontend):
https://www.domain.com - API Gateway:
https://api.domain.com - Wallet Service:
https://wallet-service.domain.com - Search Interface:
https://search.domain.com
There is a Terraform configuration in the terraform directory that can be used to provision the necessary AWS resources for this architecture.
For a containerized version of this architecture, consider using Kubernetes with AWS EKS or another managed Kubernetes service, the k8s directory contains example configurations.