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The Flask guides take a Flask project from your computer to a running Sevalla application, then add one capability each. Start with the deploy guide: the others build on the project it creates.

Deploy Flask

Gunicorn, an application factory, a PostgreSQL database and migrations in a job.

Background tasks

Run Celery in a background worker with the Flask application context.

Caching

Cache views in a Redis database with Flask-Caching, and control the CDN and edge cache.

Health checks

Readiness and liveness endpoints for zero-downtime deployments.
For file uploads to a bucket from Flask, the boto3 code in Use object storage from FastAPI works unchanged inside a Flask view.