How to Deploy Your Databutton-Built App
Step-by-step guide to deploying your Databutton app to production. Covers Python backend with FastAPI and React frontend deployment, environment variables, and production configuration.
What Databutton generates
Databutton typically generates projects using Python backend with FastAPI and React frontend, backed by PostgreSQL. Databutton is designed for data-heavy applications — analytics dashboards, internal tools, and data pipelines with AI-assisted code generation. Understanding the stack is important because it determines your deployment options and the specific configuration you'll need.
Where to deploy
Databutton provides managed cloud hosting within its platform. For self-hosting, the FastAPI backend runs on Railway, Render, or a cloud VM, and the React frontend deploys to Vercel. PostgreSQL goes to Supabase, Railway, or AWS RDS
Step-by-step deployment
If leaving Databutton's platform: export the project, set up a PostgreSQL database and run any schema migration scripts, configure environment variables (DATABASE_URL, API keys, auth secrets), run `uvicorn main:app` to verify the FastAPI backend starts, build and deploy the React frontend with the backend URL configured. Set up database backups before going live
Environment variables
One of the most common deployment failures is missing or misconfigured environment variables. Databutton apps often hardcode values during development that need to be externalized for production. Audit every file for hardcoded URLs, API keys, and configuration values. Create a .env.example file listing every required variable. Set these in your hosting platform's dashboard before deploying.
Post-deployment checklist
After deploying, verify: HTTPS is enforced on all routes, custom domain is configured and resolving, environment variables are correctly loaded, all features work in production (not just locally), error tracking is capturing exceptions, and performance is acceptable under real conditions.
Common deployment mistakes
The most frequent issues we see in Databutton deployments: forgetting to set environment variables (causing startup crashes), not testing the production build locally before deploying, missing build dependencies, and using development configurations in production.
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Related guides
Common Bugs in Databutton-Generated Code
The most common bugs we find in Databutton apps and how to fix them.
Security Issues in Databutton Code
Critical security vulnerabilities commonly found in Databutton-generated apps.
Optimizing Databutton-Generated Code for Performance
How to make your Databutton app faster.
Adding Tests to Your Databutton Project
How to add a testing framework to your Databutton app.
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