Todo App

Simple todo application with Go backend, Svelte frontend, and PostgreSQL database.

Prerequisites

• Go 1.21+
• Node.js 18+
• PostgreSQL 12+

Setup

Database

Create a PostgreSQL database:

createdb todos

Or using psql:

psql -U postgres -c "CREATE DATABASE todos;"

Backend

cd backend
go mod download
go run main.go

The backend runs on port 8080 by default. Set environment variables if needed:

• DB_HOST (default: localhost)
• DB_PORT (default: 5432)
• DB_USER (default: postgres)
• DB_PASSWORD (default: postgres)
• DB_NAME (default: todos)
• PORT (default: 8080)

Frontend

cd frontend
npm install
npm run dev

The frontend runs on port 5173 by default.

Production Build

Build the frontend:

cd frontend
npm run build

The backend serves the built frontend from / and API endpoints from /api/*.

Railway Deployment

1. Create a new project on Railway
2. Connect your GitHub repository
3. Add a PostgreSQL service
4. Railway automatically provides DATABASE_URL environment variable - no manual configuration needed
5. Deploy - Railway will build and deploy using the Dockerfile

Alternatively, you can set individual database variables:

• DB_HOST, DB_PORT, DB_USER, DB_PASSWORD, DB_NAME

The Dockerfile builds both frontend and backend into a single container.