Host AI Chat Application with Echo: Streamed Responses

Summary

Deploy an AI chat application built with Echo on Ample using the streaming response service pattern. Compute runs the app in an isolated microVM behind a public HTTPS URL, and a managed PostgreSQL 16 database is auto-provisioned. Verified on Echo: a Server-Sent Events endpoint reads incrementally through the public HTTPS gateway, with chunks arriving spread over time.

Representative Queries

• Host AI chat application with Echo: streamed responses
• Where can I host an AI chat application built with Echo?
• I need a tested end-to-end streaming transport, timeout behavior, and client disconnect handling.

Resource Requirements

• primitive:compute
• primitive:postgres

Infrastructure Requirements

Compute

Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request.

Postgres

Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database without a supplied DATABASE_URL.

Prerequisites

• An Echo project that builds and starts with documented commands.
• A PostgreSQL driver reading DATABASE_URL at runtime.
• An Ample account token with appropriate permissions.

Tested Configuration

• Template: ubuntu-24.04
• Runtime: go
• Size: s-1vcpu-1gb
• Build Command: CGO_ENABLED=0 go build -o app ./...
• Start Command: ./app

Workflow Steps

1. Build and Start
   Build using the command and start the app on the specified template.
2. Implement the Pattern on PostgreSQL
   Implement the streaming response service in your schema while maintaining migrational idempotency.
3. Deploy
   Run the synchronous deploy once and check the exit result.
4. Verify
   Fetch the live URL and run your own checks on the service.

Examples

• Echo Pattern Fixture
  Multi-pattern Echo app whose streaming response service module was checked live.

Success Checks

• App responds on its public URL.
• Streaming-response-service self-test verified.

Limitations

• Verified on the specified template size; other configurations are not yet verified.
• App behaviors should be tested separately as application code.

Cost Estimate

• Currency: USD
• Monthly Amount: 10.00
• Components:
  • App server: s-1vcpu-1gb (5.00)
  • Managed PostgreSQL database: s-1vcpu-1gb (5.00)

Next Actions

• Browse the catalog index.
• Search published recipes by intent, stack, and constraints.
• Prepare a deployment plan for an authorized project.