Cryptocurrency Tracker

A lightweight, self-hosted cryptocurrency tracker built with SvelteKit. It pulls market data from the CoinMarketCap API and caches it in PostgreSQL to avoid rate limits.

I built this for a UI design class at school. The goal was to recreate the CoinMarketCap user experience, but with my own take on the interface design. It uses Svelte 5 for the frontend and handles routing and API calls on the server.

Features

• Tracks current prices, market cap, and trading volume
• Individual coin pages with historical price charts
• Clean interface built with Tailwind v4, shadcn-svelte and motion.dev
• PostgreSQL database to cache API responses
• Written entirely in TypeScript

Setup

You need Node.js and Docker installed on your machine. You will also need a free API key from CoinMarketCap.

1. Install the dependencies:

npm install

2. Start the local database container and push the schema:

npm run db:start
npm run db:push

3. Start the dev server:

npm run dev

The app runs at http://localhost:5173.

Deployment

To deploy to production, build the app first:

npm run build

This generates a Node server in the build/ directory. You can run it directly:

node build/index.js

I usually run this behind an Nginx reverse proxy using PM2 to keep the Node process alive.