Code Craft: Aggregated Bootstrapper API

Problem: Implement an Aggregated Bootstrapper API Implement an HTTP API (you may use pseudocode for the API and core logic) that fetches multiple pieces of bootstrap data in one call during app/service startup. The API must call multiple downstream services (or data sources) concurrently and aggregate results into a single response. Requirements The API accepts request parameters (e.g., user_id, location, device; you can choose but must specify clearly). Call multiple downstream endpoints concurrently (at least 3), such as: User profile Available stores / recommendations Active order / delivery status Promotions / credits Aggregate downstream responses into one unified JSON response. Partial failure handling: if some downstream calls fail, still return HTTP 200, and mark which modules failed or were degraded. Timeouts and fallbacks: configure per-downstream timeouts; on timeout return default/empty values. Constraints / Boundaries Specify the concurrency model (thread pool / async / coroutines). Optional caching: what to cache, cache keys, and TTL. Idempotency and observability: include request id and downstream latency stats. Output Provide: API contract (path, request/response examples) and core aggregation pseudocode/code skeleton. Example Input GET /bootstrap?user_id=1&location=SF&request_id=abc Output 200 OK { "request_id": "abc", "data": { "profile": {"user_id": "1", "name": "Alice"}, "recommendations": {"stores": ["StoreA","StoreB"], "location": "SF"}, "active_order": {"has_active_order": false} }, "errors": [], "meta": {"latency_ms": {"profile": 20, "recommendations": 50, "active_order": 10}} }