Railway S3-Compatible Storage

Railway provides S3-compatible storage buckets that work with standard AWS SDK. However, there are critical differences from AWS S3.

Critical: Private Buckets Only

Railway buckets are private by default and do not support public buckets. The ACL: "public-read" setting is ignored.

To serve files publicly:

1. Proxy endpoint (recommended) - API route that fetches from S3 and serves to client
2. Presigned URLs - Generate time-limited signed URLs for direct access

Environment Variables

Railway auto-injects these when you link a storage bucket to your service. Use these exact names: