Design a malicious-URL checking service using an isMalicious API
Company: LinkedIn
Role: Software Engineer
Category: System Design
Difficulty: medium
Interview Round: Onsite
Overview: This question evaluates system design competencies such as scalable API design, caching and cache invalidation strategies, rate limiting and backpressure, fault tolerance and circuit-breaking, data modeling for reputation storage, partitioning, and operational metrics for reliability.
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