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System Design Interview Questions and Answers

Ques 21. Design a scalable IoT (Internet of Things) platform.

The system involves device connectivity, data processing, and storage for managing a large number of IoT devices and their data.

Example:

Sensors in smart home devices send data to the platform, and the system processes and stores the information for analysis.

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Ques 22. Design a scalable message queue system.

The system involves message producers, queues, and consumers, with features like message persistence, load balancing, and fault tolerance.

Example:

Services in a microservices architecture communicate by sending messages through the queue.

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Ques 23. Create a collaborative document editing system like Google Docs.

The system involves real-time collaboration, version control, and conflict resolution mechanisms to enable multiple users to edit a document simultaneously.

Example:

Several users edit a document together, and changes are reflected in real-time across all collaborating users.

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Ques 24. Design an online multiplayer gaming system.

The system involves game servers, matchmaking algorithms, and real-time communication for a seamless multiplayer gaming experience.

Example:

Players from different locations connect to the game server and engage in a multiplayer game with low latency.

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Ques 25. Build a content recommendation system for a news platform.

The system uses natural language processing, user behavior analysis, and collaborative filtering to recommend articles based on user interests.

Example:

A user reads news articles, and the system suggests related articles from various categories.

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