### Host asset library with Next.js: relational workflow state

Deploy an asset library built with Next.js on Ample using the transactional workflows 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. Verified on Next.js: an optimistic version check and an event row written in the same transaction, a stale update rejected, and a history query over the application-owned events (history=2 conflict=rejected). Not separately tested: your domain records, validation rules and concurrency policy; treat the asset library-specific behavior as your application code.

#### Representative Queries
- Host asset library with Next.js: relational workflow state
- Where can I host Asset library built with Next.js?
- I need a domain record schema, validation rules and concurrency behavior.

#### Resource Requirements
- primitive:compute
- primitive:postgres

#### Infrastructure Requirements
1. **Compute**  
   - Status: verified  
   - Summary: Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.
2. **Postgres**  
   - Status: verified  
   - Summary: Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.

#### Framework
- Next.js

#### Workload
- Asset library

#### 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)
- An Ample account token with servers:write, databases:read

### 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**  
   - The fixture's module implements transactional workflows...  
3. **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.
4. **Verify**  
   - Fetch the live URL and the pattern self-test route(s)...

### Examples
1. **Next.js pattern fixture**  
   - Description: Multi-pattern Next.js app whose transactional workflows module was checked live; the module is under tests/deploy-canaries/_pattern-modules.  
   - Source Ref: tests/deploy-canaries/next-js-patterns

### Limitations
- Verified on the node-22 template at s-1vcpu-1gb with the example fixture; other sizes, templates and Next.js major versions are not verified.
- The asset library itself is application code and was not separately tested; the pattern checks are what was verified.

### Cost Estimate
- **Currency:** USD  
- **Monthly Amount:** 10.0  
- **Components:**
   1. **App server**  
      - Size: s-1vcpu-1gb  
      - Quantity: 1.0  
      - Monthly Amount: 5.0
   2. **Managed PostgreSQL database**  
      - Size: s-1vcpu-1gb  
      - Quantity: 1.0  
      - Monthly Amount: 5.0  
- **Note:** Always-on monthly price of the tested sizes...