. NET thread safety

Concurrentdictionary is a. net4.0 launched a set of thread-safe one of the set, and it was released along with Concurrentstack,concurrentqueue and other types, their single-threaded version (thread insecure, Queue,stack,dictionary) We must not be strangers. Concurrentdictionary<tkey, tvalue> can be accessed by multiple threads at the same time, and thread-safe, usage is much the same as dictionary, but with a few more methods. Concurrentdictionary belongs to the System.Collections.Concurrent namespace.
The System.Collections.Concurrent namespace provides multiple thread-safe collection classes. When multiple threads concurrently access the collection, these classes should be used in place of the corresponding types in the System.Collections and System.Collections.Generic namespaces.

. NET thread safety