chore: import upstream snapshot with attribution

doc/source/serve/doc_code/scheduled_batch_processing.py

@@ -0,0 +1,32 @@
+# __serve_example_begin__
+import asyncio
+
+from ray import serve
+from ray.serve.config import AutoscalingConfig, AutoscalingPolicy
+
+
+@serve.deployment(
+    autoscaling_config=AutoscalingConfig(
+        min_replicas=1,
+        max_replicas=12,
+        policy=AutoscalingPolicy(
+            policy_function="autoscaling_policy:scheduled_batch_processing_policy"
+        ),
+    ),
+)
+class BatchProcessingDeployment:
+    async def __call__(self) -> str:
+        # Simulate batch processing work
+        await asyncio.sleep(0.5)
+        return "Hello, world!"
+
+
+app = BatchProcessingDeployment.bind()
+# __serve_example_end__
+
+if __name__ == "__main__":
+    import requests  # noqa
+
+    serve.run(app)
+    resp = requests.get("http://localhost:8000/")
+    assert resp.text == "Hello, world!"