# Host storefront with Spring Boot: inventory imports

Deploy a storefront built with Spring Boot 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 Spring Boot: 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 storefront-specific behavior as your application code.

## Representative Queries
- Host storefront with Spring Boot: inventory imports
- Where can I host Storefront built with Spring Boot?
- I need an inventory import contract, staging objects and row-level error handling.

## Resource Requirements
- primitive:compute
- primitive:postgres
- primitive:s3-compatible-object-storage

## Infrastructure Requirements
### Compute
Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.

### Postgres
Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.

### S3-compatible object storage
Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.

## Workflow Steps
### Build and start
`./mvnw -q -DskipTests package` (or the Gradle wrapper) producing one application jar, then `java -jar` on the jvm-21 template (Temurin JDK 21) with server.port read from PORT. The server must bind 0.0.0.0 on PORT.

### 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.

### 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 Keep private data in an unpublished bucket.

### 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=...`

### 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`

## Limitations
- Verified on the jvm-21 template at s-1vcpu-2gb with the example fixture; other sizes, templates and Spring Boot major versions are not verified.
- The storefront itself (your import format, mapping and conflict rules) is application code and was not separately tested; the pattern checks are what was verified.
- Region, compliance attestations and request-duration limits are unknown and not claimed.
- Apps auto-pause when idle and wake on the next request; always-on is an operator setting, not a plan feature.

## Cost Estimate
Currency: USD
Monthly Amount: 10.0
Note: Always-on monthly price of the tested sizes; apps and databases auto-pause when idle. Buckets are allocation-priced per quota and not included.

## Next Actions
- [Browse the catalog index](https://api.ample.computer/v1/catalog)
- [Search published recipes by intent, stack and constraints](https://api.ample.computer/v1/catalog/search) 
- [Prepare a side-effect-free deployment plan for an authorized project](https://api.ample.computer/v1/catalog/plan)
- [Read the existing agent authentication setup](https://api.ample.computer/mcp/setup) 
- [Browse Storefront](https://api.ample.computer/v1/catalog/nodes/workload%3Astorefront)
- [Browse Spring Boot](https://api.ample.computer/v1/catalog/nodes/stack%3Aframework-spring-boot)
- [Browse Bulk import staging](https://api.ample.computer/v1/catalog/nodes/pattern%3Abulk-import-staging)
- [Browse Deploy web app](https://api.ample.computer/v1/catalog/nodes/intent%3Adeploy-web-app)