Durable Functions Recipe

Orchestration workflows with Durable Task Scheduler as the backend.

Template Selection

Resource filter: durable
Discover templates via MCP or CDN manifest where resource == "durable" and language matches user request.

Key Concept

Uses Durable Task Scheduler (DTS) — a fully managed backend for state persistence. Do NOT use Azure Storage queues/tables.

See Durable Task Scheduler reference for backend configuration details.

Troubleshooting

Orchestration Fails to Start

Cause: Durable Task Scheduler (DTS) backend not provisioned or connection misconfigured.
Solution: Verify the DTS resource exists and the function app has the Durable Task Scheduler Worker role. Do NOT use Azure Storage queues/tables as backend.

UAMI Connection Issues

Cause: Missing or incorrect Durable Task Scheduler connection string.
Solution: DTS uses a connection string format (not the __ suffix pattern). Set these app settings: