page:recipes:product catalog:asp net core:relational catalog

Host product catalog with ASP.NET Core: relational catalog data

Deploy a product catalog built with ASP.NET Core 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 ASP.NET Core: 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 product catalog-specific behavior as your application code.

Representative Queries

• Host product catalog with ASP.NET Core: relational catalog data
• Where can I host Product catalog built with ASP.NET Core?
• I need catalog tables, transactional update logic and application-level access boundaries.

Resource Requirements

• Compute
• Postgres

Infrastructure Requirements

• Compute: Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are 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.

Prerequisites

• A ASP.NET Core project that builds and starts with the documented commands (dotnet publish -c Release -o out in the builder, then dotnet .dll on the dotnet-10 template with ASPNETCORE_URLS bound to PORT)
• 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

Tested Configuration

• Template: dotnet-10
• Runtime: dotnet
• Size: s-1vcpu-1gb
• Build: dotnet publish -c Release -o out
• Start: ASPNETCORE_URLS=http://0.0.0.0:$PORT dotnet out/$(basename $(ls out/*.runtimeconfig.json | head -n 1) .runtimeconfig.json).dll

Workflow Steps

1. Build and start

   • Command: dotnet publish -c Release -o out in the builder, then dotnet .dll on the dotnet-10 template with ASPNETCORE_URLS bound to PORT.

2. Implement the pattern on PostgreSQL

   • The fixture's module implements transactional workflows: 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).
   • Copy the approach into your schema; keep migrations idempotent and run them with --release-command.

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.
   • Command: ample deploy . --name --public

4. Verify

   • Fetch the live URL and the pattern self-test route(s) (/p/transactional-workflows) from the example; then run your own checks.
   • On failure read ample logs --kind build then --kind runtime.
   • Command: ample logs --kind build

Examples

• ASP.NET Core pattern fixture
  • Description: Multi-pattern ASP.NET Core app whose transactional workflows module was checked live; the module is under tests/deploy-canaries/_pattern-modules.
  • Source Ref: tests/deploy-canaries/asp-net-core-patterns

Success Checks

• App responds on its public URL
  • Kind: http_get
  • Path: /
  • Expect: ample canary asp net core patterns
• Transactional-workflows self-test
  • Kind: http_get
  • Path: /p/transactional-workflows
  • Expect: tx=ok history=2 conflict=rejected

Limitations

• Verified on the dotnet-10 template at s-1vcpu-1gb with the example fixture; other sizes, templates and ASP.NET Core major versions are not verified.
• The product catalog itself (your domain records, validation rules and concurrency policy) 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.
• Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified; apps and their databases are placed together.

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.

Components

• App Server: size - s-1vcpu-1gb, quantity - 1.0, monthly amount - 5.0
• Managed PostgreSQL Database: size - s-1vcpu-1gb, quantity - 1.0, monthly amount - 5.0

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