I built a real-time trading simulator with Next.js and Socket.IO

Just finished building Flash, a real-time trading simulator that handles live market data with WebSocket updates.

Key features

Real-time price updates for stocks, crypto, and forex
AI-powered portfolio analysis using OpenAI
Redis caching t…


This content originally appeared on DEV Community and was authored by Mido

Just finished building Flash, a real-time trading simulator that handles live market data with WebSocket updates.

Key features

  • Real-time price updates for stocks, crypto, and forex
  • AI-powered portfolio analysis using OpenAI
  • Redis caching to optimize API calls
  • Full authentication and portfolio management

Tech stack

Next.js, TypeScript, Express, Socket.IO, Prisma, PostgreSQL, Redis, OpenAI

Demo

Video
Live
GitHub

What's next

Planning to add stop-loss/take-profit orders, deeper analytics, and more advanced AI features.

Let me know if you have questions about the implementation!


This content originally appeared on DEV Community and was authored by Mido


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Mido | Sciencx (2025-10-19T02:17:51+00:00) I built a real-time trading simulator with Next.js and Socket.IO. Retrieved from https://www.scien.cx/2025/10/19/i-built-a-real-time-trading-simulator-with-next-js-and-socket-io/

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" » I built a real-time trading simulator with Next.js and Socket.IO." Mido | Sciencx - Sunday October 19, 2025, https://www.scien.cx/2025/10/19/i-built-a-real-time-trading-simulator-with-next-js-and-socket-io/
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Mido | Sciencx Sunday October 19, 2025 » I built a real-time trading simulator with Next.js and Socket.IO., viewed ,<https://www.scien.cx/2025/10/19/i-built-a-real-time-trading-simulator-with-next-js-and-socket-io/>
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IEEE
" » I built a real-time trading simulator with Next.js and Socket.IO." Mido | Sciencx [Online]. Available: https://www.scien.cx/2025/10/19/i-built-a-real-time-trading-simulator-with-next-js-and-socket-io/. [Accessed: ]
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» I built a real-time trading simulator with Next.js and Socket.IO | Mido | Sciencx | https://www.scien.cx/2025/10/19/i-built-a-real-time-trading-simulator-with-next-js-and-socket-io/ |

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