Temporal Workflow Orchestration

Temporal SDK patterns for durable workflows. Workflows replay, so determinism is the primary correctness constraint.

Determinism First

Workflow code must not perform network, database, filesystem, subprocess, or blocking external work. Put those effects in Activities. Use workflow.now(), workflow.random(), and workflow.uuid4() rather than ambient nondeterministic APIs. Workflows are sandboxed by default; keep workflow modules side-effect free and pass known activity/model imports through workflow.unsafe.imports_passed_through().

Worker Setup

from temporalio.client import Client
from temporalio.worker import Worker

async def main() -> None:
    client = await Client.connect("localhost:7233")