Implement a Multi-Level Recipe Management Service
Company: Airbnb
Role: Software Engineer
Category: Software Engineering Fundamentals
Difficulty: medium
Interview Round: Online Assessment
Overview: Implement an in-memory recipe service that grows from basic CRUD into deterministic search, sorting, and user-initiated edits. The task evaluates normalization, secondary-index consistency, defensive copying, monotonic identifiers, atomic validation, and mixed-operation testing.
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