Cracking Roblox's Software Engineer Interview: Mastering Rate Limiting Algorithms

Roblox | Software Engineer | Interview Experience

Interview Date: Not specified
Result: Not specified
Difficulty: Not specified

Interview Process

I had a technical phone screen interview with Roblox. The interviewer focused on designing a system to control the number of requests a user can make to a server over time, specifically discussing rate limiting.

Technical Questions

  1. Rate Limiter (System Design, Rate Limiting)

Tips & Insights

The discussion included different algorithms for rate limiting, such as the token bucket algorithm and the leaky bucket algorithm. I was asked to describe their trade-offs and select one based on specific scenarios. Additionally, we covered handling edge cases like bursts of traffic and maintaining state across distributed systems. Overall, it was a technical deep dive into system design with an emphasis on scalability and performance considerations.