DeveloperAlexander 

Interfaces and types for large collections that can store up to 4607183514018775041 items like arrays, lists, sets and dictionaries. (Many .NET standard collections are limited to about 2.1 billion items) There... More information

Dictionary-like collections that allow to limit the amount of memory (RAM) in MB that will be used. Any memory requirement that exceeds this amount is automatically swapped out to disk. Additionally it offers... More information