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Implement a robust REST API method

AppleSoftware Engineer · Technical Screen
HardSoftware EngineerTechnical ScreenSystem Design

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Implement a robust REST API method evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

Implement a REST API method that creates a resource. Define the request and response schema, validation rules, and appropriate HTTP status codes. Ensure idempotency using an Idempotency-Key header and handle duplicate requests safely. Include error handling, logging, and input sanitization. Discuss authentication and authorization, rate limiting, and how you would write unit and integration tests. Outline the data model and how you would handle concurrent requests to prevent race conditions.