What is the difference between Dictionary and ConcurrentDictionary?

Can you explain the difference between Dictionary and ConcurrentDictionary in C#?

Sure! A Dictionary is a collection that stores key-value pairs and is not thread-safe, while ConcurrentDictionary is designed for concurrent access.

What does thread-safe mean in this context?

Thread-safe means that the data structure can be accessed by multiple threads simultaneously without causing data corruption.

When should I use ConcurrentDictionary instead of Dictionary?

You should use ConcurrentDictionary when you expect multiple threads to read and write to the collection at the same time.

Are there any performance differences between the two?

Yes, ConcurrentDictionary may have some overhead due to its thread-safety features, but it performs better under high contention.