Design a Scalable Like Counter
Company: Roblox
Role: Software Engineer
Category: System Design
Difficulty: medium
Interview Round: Onsite
Overview: This question evaluates a candidate's competence in large-scale system design, covering scalability, high-throughput write handling, read-optimized counter stores, change-data-capture/event streaming, idempotency and duplicate suppression, API and data model design, and failure/recovery strategies.