Host vendor portal with Phoenix: tenant-scoped workspaces

Summary

Deploy a vendor portal built with Phoenix on Ample using the multi-tenant relational data 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 Phoenix: a tenant column on every row and query, with a cross-tenant read returning nothing (tenant_isolation=ok). Not separately tested: your tenant model, membership and per-tenant authorization; treat the vendor portal-specific behavior as your application code.

Representative Queries

• Host vendor portal with Phoenix: tenant-scoped workspaces
• Where can I host Vendor portal built with Phoenix?
• I need an explicit tenant model and application-enforced tenant isolation tests.

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 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.

Prerequisites

• A Phoenix project that builds and starts with the documented commands.
• A PostgreSQL driver reading DATABASE_URL at runtime.
• An Ample account token with servers:write, databases:read.

Tested Configuration

• Template: elixir-1.18
• Runtime: elixir
• Size: s-1vcpu-1gb
• Install: mix local.hex --force && mix local.rebar --force && MIX_ENV=prod mix deps.get --only prod
• Build: MIX_ENV=prod mix compile && MIX_ENV=prod mix release --overwrite
• Start: PHX_SERVER=true _build/prod/rel/$(ls _build/prod/rel | head -n 1)/bin/$(ls _build/prod/rel | head -n 1) start

Workflow Steps

1. Build and start: mix deps.get, MIX_ENV=prod mix compile and mix release in the builder...
2. Implement the pattern on PostgreSQL: The fixture's module implements multi-tenant relational data...
3. Deploy: Run the synchronous deploy once and read the result...
4. Verify: Fetch the live URL and the pattern self-test route(s)...

Success Checks

• App responds on its public URL.
• Multi-tenant-relational-data self-test.

Limitations

• Verified on the elixir-1.18 template at s-1vcpu-1gb with the example fixture...

Cost Estimate

• Monthly Amount: 10.0 USD
• Note: Always-on monthly price of the tested sizes...

Evidence Summary

1. Canary run: Phoenix pattern fixture deployed on Ample...
2. Canary run: The same Phoenix app deployed with a --release-command migration...

Last Verified At

2026-09-20T23:45:31Z