When should I use ConcurrentDictionary in C#?

What is ConcurrentDictionary in C#?

ConcurrentDictionary is a thread-safe collection that allows multiple threads to read and write data concurrently.

When should I use ConcurrentDictionary instead of a regular Dictionary?

You should use ConcurrentDictionary when you need to perform concurrent read and write operations without locking.

Can you give me an example of its usage?

Sure! You can use ConcurrentDictionary to store user sessions in a web application where multiple requests may modify the session data.

Are there any performance considerations I should be aware of?

Yes, while ConcurrentDictionary is optimized for concurrent access, it may have overhead compared to a regular Dictionary in single-threaded scenarios.