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Tell Torki the company, role level, and focus area. It tailors questions to the specific interview style — FAANG system design, startup product thinking, or enterprise architecture.
I'm interviewing for a senior backend engineer role at a FAANG company. Give me the top 5 system design questions with answer frameworks.
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I'm interviewing for a senior backend engineer role. Give me the top 5 system design questions with answer frameworks.
Top 5 System Design Questions for Senior Backend Roles:
1. Design a URL Shortener (like bit.ly)
- Key areas: Hashing strategy, read-heavy workload, database choice, analytics
- Framework: Start with API design → estimate QPS → choose storage (NoSQL for speed) → handle collisions → add caching layer → discuss expiration
- Key areas: Token bucket vs sliding window, distributed systems, Redis
- Framework: Clarify requirements → choose algorithm → single server first → then distributed with Redis → handle edge cases (race conditions)
- Key areas: WebSocket connections, message delivery guarantees, presence
- Framework: 1:1 vs group chat → connection management → message storage → delivery status → offline handling → media support
- Key areas: Fan-out on write vs read, ranking, caching
- Framework: Data model → fan-out strategy → ranking algorithm → caching at multiple levels → handle celebrities (hybrid approach)
- Key areas: Consistent hashing, eviction policies, replication
- Framework: Single node first → partitioning → consistent hashing → replication → cache invalidation strategies
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