FAANG / Big Tech interview question · Most asked
Design a chat/messaging system.
Summary
Discuss online presence, message delivery, fan-out, storage (recent vs history), push vs pull, and ordering/idempotency.
Longer Answer
Discuss online presence, message delivery, fan-out, storage (recent vs history), push vs pull, and ordering/idempotency. Realtime systems fundamentals.
Key Points
- Discuss online presence, message delivery, fan-out, storage (recent vs history), push vs pull, and ordering/idempotency
- Realtime systems fundamentals
- Relevant areas: System Design, Chat
- Use the answer to connect the concept back to a realistic production or interview scenario for 'Design a chat/messaging system.'
Comparison / Tradeoffs
| Aspect | Notes |
|---|---|
| Core idea | Discuss online presence, message delivery, fan-out, storage (recent vs history), push vs pull, and ordering/idempotency. |
| Practical tradeoff | Discuss online presence, message delivery, fan-out, storage (recent vs history), push vs pull, and ordering/idempotency. |
Explanation
Summary
Realtime systems fundamentals.
Longer Answer
Realtime systems fundamentals. Focus on the practical implications across System Design, Chat.
Key Points
- Realtime systems fundamentals
- Focus on the practical implications across System Design, Chat
- Relevant areas: System Design, Chat
- Use the answer to connect the concept back to a realistic production or interview scenario for 'Design a chat/messaging system.'
Comparison / Tradeoffs
| Aspect | Notes |
|---|---|
| Core idea | Realtime systems fundamentals. |
| Practical tradeoff | In an interview, relate 'Design a chat/messaging system.' to implementation decisions, tradeoffs, and operational impact. |
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