Questions that have appeared at tiktok for an engineering (Case Study) interview.

1. System Design

Question: How would you design the architecture for a feature that allows users to collaborate on a single video in real-time?

Question: TikTok has a feature that allows users to see trending videos. How would you design the system to handle this feature?

Question: How would you design a system to ensure the smooth streaming of videos to millions of users simultaneously?

2. Scalability

Question: TikTok experiences high traffic volumes during specific times. How would you ensure that the system remains stable during these peak times?

Question: How would you design a system capable of handling the upload and processing of millions of videos daily?

Question: Imagine a situation where the number of users doubles overnight. What steps would you take to ensure the system can handle this increased load?

3. Data Management

Question: How would you design a system to store and retrieve user data effectively and securely?

Question: TikTok needs a feature that provides video recommendations based on user preferences. How would you design the back-end system for this?

Question: How would you handle a scenario where a large amount of data is lost due to a system failure?

4. Security

Question: How would you design a secure system to protect user data from potential breaches?

Question: What measures would you take to ensure the safe transfer of data between different parts of the system?

Question: How would you handle a situation where a security vulnerability is discovered in the system?