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Design a resilient bootstrap API
Microservice Orchestration PatternsResilience PatternsAPI Design for Partial FailuresCaching StrategiesObservability
Problem Description
Design and implement a new "Bootstrap API" that aggregates data from three existing internal microservices: User Service, Payments Service, and Address Service.
Existing Services
- User Service:
GET /user-to-consumer?user_id=...- Returns:
{ consumer_id, user_profile... }
- Returns:
- Payments Service:
GET /payment-info?consumer_id=...- Returns:
{ payment_methods... }
- Returns:
- Address Service:
GET /address-info?consumer_id=...- Returns:
{ addresses... }
- Returns:
Bootstrap API Requirements
- Endpoint:
GET /bootstrap?user_id=... - Response: Must aggregate user/profile information, payment information, and address information.
- Key Requirement: The endpoint must be as resilient as possible to failures, including downstream timeouts, errors, and partial outages.
Deliverables
Candidates should describe:
- The API contract, specifically detailing behavior during partial failures.
- The service orchestration logic, including considerations for ordering and concurrency.
- Reliability strategies, such as timeouts, retries, circuit breakers, fallbacks, and caching.
- Observability and operational considerations.
Assumptions
- Typical microservice constraints apply.
- Downstream services may be slow or intermittently unavailable.
AI interview prep
Core dilemma
Aggregating data from multiple, potentially unreliable, downstream microservices into a single, highly available, and resilient API response, while managing partial failures gracefully.
Mid-level signals3
Senior signals4
Red flags4
3 tradeoffs and 3 stress tests locked
Interview prep
Unlock the interviewer X-Ray rubric, tradeoff matrix, stress tests, clarifying questions, and key concepts.
Design a resilient bootstrap API
Microservice Orchestration PatternsResilience PatternsAPI Design for Partial FailuresCaching StrategiesObservability
Problem Description
Design and implement a new "Bootstrap API" that aggregates data from three existing internal microservices: User Service, Payments Service, and Address Service.
Existing Services
- User Service:
GET /user-to-consumer?user_id=...- Returns:
{ consumer_id, user_profile... }
- Returns:
- Payments Service:
GET /payment-info?consumer_id=...- Returns:
{ payment_methods... }
- Returns:
- Address Service:
GET /address-info?consumer_id=...- Returns:
{ addresses... }
- Returns:
Bootstrap API Requirements
- Endpoint:
GET /bootstrap?user_id=... - Response: Must aggregate user/profile information, payment information, and address information.
- Key Requirement: The endpoint must be as resilient as possible to failures, including downstream timeouts, errors, and partial outages.
Deliverables
Candidates should describe:
- The API contract, specifically detailing behavior during partial failures.
- The service orchestration logic, including considerations for ordering and concurrency.
- Reliability strategies, such as timeouts, retries, circuit breakers, fallbacks, and caching.
- Observability and operational considerations.
Assumptions
- Typical microservice constraints apply.
- Downstream services may be slow or intermittently unavailable.