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LinkedHashMap extends HashMap to preserve the order of entries—either by insertion or access sequence—while retaining O(1) average-time complexity for lookups. It achieves this by combining HashMap’s hash table structure with an additional doubly linked list that tracks entry order. Core Structure LinkedHashMap reuses HashMap’s underlying array ...

Ensuring Concurrency Safety in Cache Implementation The second iteration phase focuses on guaranteieng thread safety for our cache implemantation while developing a core Group srtucture. This Group concept can be likened to a table in MySQL, providing namespace isolation for cached data. A critical feature we implement is a fallback mechanism. ...