314,552 interview questions from 6,000+ companies.
Implement an LRU cache using a hash map and doubly linked list to support O(1) get and put operations.
Tests ability to improve performance using indexing, query planning, and system-level optimizations.
Tests ability to control memory usage and design for stability under large workloads.
Tests judgment in selecting caching approaches based on workload characteristics.
Tests attention to correctness under concurrency and time-based eviction edge cases.
Tests ability to design and implement a correct LFU cache with required performance.
Tests understanding of cache design trade-offs and implementation complexity.
Tests operational skills for maintaining consumer health, throughput, and low end-to-end latency.
Tests understanding of event-driven architecture and how Kafka supports decoupling.
Tests system design skills for protecting databases using caching under high query volume.
