CoinExchange: Open-Source Cryptocurrency Exchange with Java-Based Matching Engine

Introduction

CoinExchange is a fully open-source cryptocurrency exchange platform featuring:

• Complete Java-based matching engine
• Multi-platform support (Web, Android, iOS)
• Comprehensive wallet RPC integration
• Microservice architecture for scalability

Legal Note: This project is intended for educational purposes only. Commercial use requires proper licensing.

Key Technical Features

1. In-Memory Matching Engine
   Processes orders 10-20x faster than traditional database-based solutions.

2. API-First Architecture

   • JWT token authentication
   • RESTful interfaces for all trading functions

3. Microservice Components:

   | Service           | Functionality                     |
   |-------------------|-----------------------------------|
   | cloud.jar         | Service registry                  |
   | match-engine.jar  | Order matching                    |
   | market.jar        | Real-time price feeds             |
   | user-center.jar   | Account management                |

4. High-Performance Stack:

   • Kafka message queues
   • Redis caching
   • MySQL/NoSQL hybrid storage

Deployment Guide

Prerequisites

• MySQL 5.5+ (xxxx database)
• Redis 3.2+
• Kafka 2.2+
• Java 8 JDK
• Nginx (production)

Configuration Steps

1. Set environment variables:

   # Database
   spring.datasource.url=jdbc:mysql://localhost:3306/xxxx
   spring.datasource.username=admin
   spring.datasource.password=[your_password]
   
   # Redis
   spring.redis.host=127.0.0.1

2. Initialize services in order:

   java -jar cloud.jar        # Registry
   java -jar match-engine.jar # Core engine
   java -jar market.jar       # Market data

3. Deploy frontend Vue projects separately.

Core Functionality

User Features

• Multi-factor authentication
• Spot trading (limit/market orders)
• OTC/C2C fiat gateways
• Referral programs
• Asset management dashboard

Admin Features

👉 Advanced trading analytics

• Real-time monitoring
• User balance adjustments
• Trading pair management
• Automated market making bots

FAQ

Q: Is cold wallet storage supported?
A: Yes, the system implements segregated cold/hot wallets with multi-signature withdrawals.

Q: What cryptocurrencies are pre-configured?
A: BTC, ETH, USDT with complete RPC interfaces. Additional coins can be added via admin panel.

Q: How to handle high traffic loads?
A: The Kafka-based architecture allows horizontal scaling - simply deploy additional matching engine instances.

Optimization Tips

1. Use SSDs for Redis persistence
2. Configure Kafka replication factor ≥3 in production
3. Monitor JVM heap size for matching engine

For enterprise-grade solutions, consider 👉 professional deployment services.

Disclaimer: This documentation represents technical capabilities only. Actual implementation may vary based on customization.