Host csv import tool with Next.js: file attachments

Summary

Deploy a csv import tool built with Next.js on Ample using the browser file uploads pattern. Compute runs the app in an isolated microVM behind a public HTTPS URL, a managed PostgreSQL 16 database is auto-provisioned and injected as DATABASE_URL, a private S3-compatible bucket holds objects with credentials delivered as encrypted environment variables. Verified on Next.js: content-type and size validation that rejects disallowed files, an object written to a private bucket and a row linking the record to the object key (reject=ok upload=ok linked=ok). Not separately tested: your upload UI, allowed types, size limits and virus scanning; treat the csv import tool-specific behavior as your application code.

Framework

Next.js

Workload

CSV import tool

Release Status

published

Support Status

verified

Execution Status

ready

Prerequisites

• A Next.js project that builds and starts with the documented commands (next build then next start -H 0.0.0.0 -p $PORT on the node-22 template)
• A PostgreSQL driver reading DATABASE_URL at runtime (auto-provisioned when omitted, or supplied with --env)
• A bucket from ample bucket create with its credentials passed as encrypted S3_* environment variables
• An Ample account token with servers:write, databases:read, buckets:read

Tested Configuration

• Template: node-22
• Runtime: node
• Size: s-1vcpu-1gb
• Install: npm install
• Build: npm run build --if-present
• Start: npm run start

Input Schema

• env: Encrypted environment variables (bucket credentials, secrets)
• name: App name
• path: Project directory or ample.toml service
• release_command: Migration command run before activation

Workflow Steps

1. Build and start: next build then next start -H 0.0.0.0 -p $PORT on the node-22 template. The server must bind 0.0.0.0 on PORT.
2. Implement the pattern on PostgreSQL: Implements browser file uploads.
3. Wire object storage: Pass endpoint, region, bucket and keys as --env values.
4. Deploy: Run the synchronous deploy once and read the result.
5. Verify: Fetch the live URL and the pattern self-test route(s) from the example.

Examples

• Next.js pattern fixture: Multi-pattern Next.js app whose browser file uploads module was checked live.

Success Checks

• App responds on its public URL
• Browser-file-uploads self-test

Limitations

• Verified on the node-22 template; other sizes, templates and Next.js versions are not verified.
• The csv import tool itself is application code and was not separately tested.

Cost Estimate

• Currency: USD
• Monthly Amount: $10.00
• Components:
  • App server: s-1vcpu-1gb, quantity: 1.0, monthly amount: $5.00
  • Managed PostgreSQL database: s-1vcpu-1gb, quantity: 1.0, monthly amount: $5.00