page:recipes:asset library:sveltekit:data imports

Host asset library with SvelteKit: structured data imports

Deploy a asset library built with SvelteKit on Ample using the bulk import staging 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 SvelteKit: a CSV staged as an object, row-level validation with per-row errors recorded, and a restart-safe import keyed by import id (imported=2 rejected=1 restart=ok). Not separately tested: your import format, mapping and conflict rules; treat the asset library-specific behavior as your application code.

Representative Queries

• Host asset library with SvelteKit: structured data imports
• Where can I host Asset library built with SvelteKit?
• I need a workload-specific import mapping, conflict rules and restart behavior.

Workflow Steps

1. Build and start
   vite build with @sveltejs/adapter-node then node build on the node-22 template. The server must bind 0.0.0.0 on PORT.

2. Implement the pattern on PostgreSQL
   The fixture's module implements bulk import staging: a CSV staged as an object, row-level validation with per-row errors recorded, and a restart-safe import keyed by import id (imported=2 rejected=1 restart=ok). Copy the approach into your schema; keep migrations idempotent and run them with --release-command.

3. Wire object storage
   Create the bucket(s), then pass endpoint, region, bucket and keys as --env values. Use path-style addressing. Keep private data in an unpublished bucket.

4. Deploy
   Run the synchronous deploy once and read the result (exit 0 live, 1 failed, 2 blocked). Re-running with no change is a no-op.

   ample deploy . --name --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=...

5. Verify
   Fetch the live URL and the pattern self-test route(s) (/p/bulk-import-staging) from the example; then run your own checks. On failure read ample logs --kind build then --kind runtime.

   ample logs --kind build

Examples

• SvelteKit pattern fixture
  Multi-pattern SvelteKit app whose bulk import staging module was checked live; the module is under tests/deploy-canaries/_pattern-modules.

  Success Checks

  • App responds on its public URL
  • bulk-import-staging self-test

Limitations

• Verified on the node-22 template at s-1vcpu-1gb with the example fixture; other sizes, templates and SvelteKit major versions are not verified.

Cost Estimate

• Monthly Amount: $10.00
  • App server: size s-1vcpu-1gb
  • Managed PostgreSQL database: size s-1vcpu-1gb

This is a summary of how to set up an asset library with SvelteKit. Make sure to adhere to the steps and verify the app properly.