Trevor Whittingham • 8/20/2024

Build An LRU Cache In Swift

This article provides a detailed guide on implementing an LRU (Least Recently Used) cache in Swift. It explains the problem of managing a fixed-capacity cache that evicts the least recently used item when full. The solution combines a dictionary for O(1) key lookup and a doubly linked list to track recency order, enabling efficient get and put operations. The tutorial covers node design with weak references to avoid retain cycles, cache initialization, and step-by-step code examples. It is aimed at developers interested in algorithms, data structures, and Swift programming.

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#algorithms #data structures #Swift