roblox | Software Engineer | Interview Experience
Interview Date: Not specified
Result: Not specified
Difficulty: Not specified
Interview Process
During my technical phone screen interview with Roblox, I encountered a rate limiter problem focused on managing API calls. The interviewer asked how I would implement a rate limiter to restrict the number of requests a user can make in a given timeframe.
I explained the concept of a token bucket algorithm, where tokens are added to the bucket at a set rate and each API call consumes a token. If there are no tokens available, the request is denied until a token is regenerated.
The interviewer probed my understanding by asking scenarios such as what would happen if bursts of requests exceed the limit and how I would handle that in real-time applications. I provided examples and discussed possible optimizations like using a distributed system for load balancing.
Overall, the conversation was quite technical and insightful, providing a good mix of coding and system design discussions which I enjoyed.
Technical Questions
- Rate Limiter (Design, System Design)
Tips & Insights
Be prepared to discuss both theoretical concepts and practical implementations. Understanding real-time application scenarios can enhance your responses.