Question 1

How do you design a system like Twitter?

Accepted Answer

Designing a system like Twitter involves considering aspects like scalability, availability, and latency. Key components include a load balancer, web servers, application servers, a database, and a caching layer. You would also need to think about the data model, API design, and how to handle features like the timeline and trending topics.

Question 2

What is the difference between horizontal and vertical scaling?

Accepted Answer

Vertical scaling (scaling up) means increasing the resources of a single server (e.g., CPU, RAM). Horizontal scaling (scaling out) means adding more servers to your system. Horizontal scaling is generally more flexible and scalable for large systems.

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