System Design Interview AI
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Interviewer [00:00:05]: Let's design a distributed cache system that can handle high throughput and low latency requirements.
You [00:00:15]: I'd like to start by clarifying the requirements. Are we designing this for a specific use case? And what are our key metrics for success?
Interviewer [00:00:28]: Good question. Let's say we're designing this for a social media platform. The cache should handle 100,000 requests per second with sub-10ms latency. It should be highly available and eventually consistent.
AI Suggestion:
- Key Requirements: High throughput (100K RPS), low latency (<10ms), high availability, eventual consistency
- Architecture Approach: Mention distributed hash table with consistent hashing for node management
- Scalability Pattern: Suggest horizontal sharding with virtual nodes
- Availability Strategy: Discuss replication factor (N=3) with quorum-based reads/writes
- Consistency Model: Explain eventual consistency implementation with vector clocks
- Eviction Policy: Mention LRU with TTL as a starting point
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