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BFF aggregation pattern: combine multiple service responses in Python

Mock three backend services and aggregate their responses into one unified payload — the BFF pattern every Python microservice gateway relies on.

bff aggregation microservices

Python

from dataclasses import dataclass
from typing import Any


@dataclass
class Service:
    name: str
    data: dict[str, Any]


def get_user_service() -> Service:
    return Service("user", {"id": 1, "name": "Alice"})


def get_orders_service() -> Service:
    return Service("orders", {"total": 299.99, "count": 2})


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