System Design
System Design Interviews for Senior Engineers
System design interviews for senior engineers reward judgment, not memorized diagrams. The framework, the tradeoff signals interviewers grade, and the traps.
#system-design
3 articles
Distributed Systems
Designing Leaderboards at Scale
Designing leaderboards at scale: why a sorted database query dies under load, how a Redis sorted set fixes it, and how to shard ranking past one node.
Distributed Systems
Notification Fanout Architecture
Notification fanout comes down to fan-out-on-write vs on-read, and the celebrity problem that breaks the naive choice. The hybrid design that scales, explained.