Design a globally distributed URL shortener that handles billions of redirects per day with low latency, abuse controls, and reliable analytics.
IntermediateUrl ShortenerCachingEdge
Feature Flag Evaluation Engine at Scale
Design a low-latency feature flag evaluation system with targeting rules, percentage rollouts, A/B testing integration, kill switches, and multi-region consistency.
Design a global CDN with edge caching, origin shielding, request routing, cache invalidation, and cost-aware traffic steering.
AdvancedCdnCachingEdge
News Feed & Timeline Service
Design a globally distributed news feed system that supports real-time post ingestion, personalized ranking, fanout, and low-latency timeline reads at massive scale.
AdvancedNews FeedTimelineRanking
Search Autocomplete Service
Design a low-latency autocomplete platform with prefix indexing, ranking, personalization, and abuse-resistant query ingestion.
IntermediateSearchAutocompleteRanking
Distributed Cache System
Design a distributed cache system like Redis or Memcached that handles millions of requests per second with sub-millisecond latency, high availability, and intelligent eviction policies.