Mastering LRU Cache: O(1) Implementation with Hash‑Linked List in Java

This article explains the LRU cache eviction strategy, details its O(1) get and put operations using a combined hash table and doubly linked list, and provides a complete Java implementation with step‑by‑step code examples and design rationale.

Doubly Linked ListO(1)hash table

0 likes · 10 min read

Mastering LRU Cache: O(1) Implementation with Hash‑Linked List in Java

Architect's Guide

Sep 10, 2022 · Fundamentals

Java Implementation of an O(1) LRU Cache Using a Doubly Linked List and HashMap

This article explains the design and Java implementation of an LRU (Least Recently Used) cache that achieves O(1) time complexity for get and put operations by combining a doubly linked list with a hash map, and provides full source code and usage examples.

Data StructureO(1)java

0 likes · 10 min read

Java Implementation of an O(1) LRU Cache Using a Doubly Linked List and HashMap