Cloudflare Interview Questions and Guide
Edge computing, reverse proxy routing, CDN caching, low-latency networking protocols (TCP/UDP, HTTP/3, TLS), and DDoS mitigation.
The Cloudflare interview loop
- Recruiter screen
- Take-home or technical phone screen
- Onsite: systems programming, distributed edge architecture, networking, hiring manager
Cloudflare interview questions
- Design a Distributed Rate Limiter
- Design a Distributed Cache
- Design a Content Delivery Network (CDN)
- Design a Distributed Lock Service
- Implement an LRU Cache
- Design Circular Queue
- Network Delay Time
- Implement a Rate Limiter Class
- Why do you want to work here?
- Tell me about a problem you noticed that nobody else was addressing
- Tell me about a difficult technical trade-off you made
- Tell me about a production incident you handled
- Tell me about a time you did more with less
- Tell me about a time you sweated the details