Top 50 low latency Interview Questions

Design a distributed vector search index that supports massive collections while maintaining low query latency and reliable freshness.

Vector Searchlow latencydistributed systemsHHAECOAAgileengineGrafana Labs

Design a low-latency distributed rate limiter with adaptive abuse detection and reliable enforcement.

system designlow latencydistributed systemsWaymoPPiramal FinanceIdfc First Bank

Design a low-latency streaming ML system that detects fraudulent patterns and adapts to evolving attacker behavior.

fraud detectionlow latencysystem architectureSentiLinkSSociété GénéraleAirwallex

Design an O(1) LRU cache with hashmap lookup and doubly linked list eviction.

class structurelow latencydesignHHeadoutSprinklrDDruva

Design a scalable real-time recommendation system for millions of active users with low-latency personalized results.

low latencyRetrievaldistributed systemsQQuora, Inc.ABC FamilyPPreply

Design a low-latency ML typeahead system with retrieval, ranking, caching, and graceful fallbacks.

ML Rankingclient-sidelow latencyTikTokMeta PlatformsByteDance