Real-Time Crypto Tracker Using Webhooks with React, Next.js and Node.js

This article discusses the development of a real-time cryptocurrency tracker using webhooks, with a frontend built in React and Next.js, and a backend in Node.js. The tracker utilizes webhooks to push real-time updates from the backend to the frontend, allowing users to monitor cryptocurrency prices without needing to refresh the page. The project requires a CoinMarketCap API key, Node.js, and Git for cloning the repository. The frontend consists of a main application file that tracks cryptocurrency symbols and listens for price updates via a WebSocket connection. Users can add new symbols to track, starting with Bitcoin (BTC) and Ethereum Classic (ETC). The backend server polls the CoinMarketCap API every 10 seconds for price changes and broadcasts these updates to connected clients. The article provides an overview of the code structure for both the frontend and backend, including key functionalities such as fetching prices and handling new symbol requests. To run the application, users need to clone the repository, replace the API key, and execute installation commands for both frontend and backend. The application can then be accessed locally, allowing users to add cryptocurrency symbols and view real-time updates.

- The crypto tracker uses webhooks for real-time updates from the backend to the frontend.

- It requires a CoinMarketCap API key and is built with React, Next.js, and Node.js.

- Users can add new cryptocurrency symbols to track, starting with BTC and ETC.

- The backend polls the CoinMarketCap API every 10 seconds for price changes.

- The application can be run locally after cloning the repository and installing necessary packages.