MemoryEfficientHashSet
Blog post: https://intelligentjava.wordpress.com/2016/10/22/memory-efficient-hashset-implementation-for-java/
Memory efficient Java HashSet implementation for hexadecimal strings. Saves more than 3.5 times the memory than simply using java's HashSet.
Java
Blog post: https://intelligentjava.wordpress.com/2016/10/22/memory-efficient-hashset-implementation-for-java/