Overview

A collection of system design interview problems covering distributed systems, streaming data, caching, and networking concepts.

Problem	Level	Key Topics
Global Minimum on a Network	L4-L6	Distributed algorithms, message passing, spanning trees
Domain Name Scoring	L3-L4	Tree traversal, hash maps, string processing
Counting Rate of Events	L4-L5	Sliding window, rate limiting, histograms
Dashboard Monitoring: Slow Queries	L4-L6	Monitoring, aggregation, scaling
Implement a TCP Stream	L4-L5	Buffers, packet reassembly, sorted maps
Implement an Aggregator	L3-L4	Streaming averages, fault tolerance, dead server detection
Find Top N Largest Files	L3-L4	BFS/DFS, heaps, parallel API calls
Design a Large-Scale Cache	L3-L6	Caching, consistent hashing, reliability, multi-datacenter