Скачать или смотреть Building a Scalable Crypto Order Engine | Node.js, Redis & WebSockets

🚀 Project Overview: In this video, I demonstrate the Eterna Order Execution Engine, a high-performance backend system designed to route crypto trades to the best Decentralized Exchange (DEX). The system compares real-time prices between Raydium and Meteora and executes the trade with the lowest price.

To handle high concurrency and ensure reliability, I implemented a queue-based architecture using Redis (BullMQ), ensuring that even under heavy load, orders are processed sequentially without data loss. The frontend receives instant status updates via WebSockets.

✨ Key Features Demonstrated:

🧠 Smart Routing Logic: Dynamically checks prices on Raydium & Meteora to find the best route.

⚡ High Concurrency: Uses Redis Queues to handle multiple simultaneous orders without server crashes.

📡 Real-Time WebSockets: Live status updates (Pending → Routing → Confirmed) pushed to the client.

🛡️ Robust Testing: Includes automated Unit Tests (Jest) and API validation.

💾 Database Integration: Stores all order states in PostgreSQL via Prisma ORM.

🛠️ Tech Stack:

Backend: Node.js, Fastify (TypeScript)

Queue: BullMQ, Redis

Database: PostgreSQL, Prisma ORM

Real-Time: Native WebSockets

Testing: Jest, Postman