Know Your Library

• Use provided thread-safe collections

• Use the executor framework for executing unrelated tasks.

• Use nonblocking solutions when possible

• Know which libraries are not thread-safe.

Thread Safe Collections

• Examples: ConcurrentHashMap, ConcurrentDictionary, etc

• Features like lock, Semaphore, SemaphoreSlim, etc support advanced concurrency design.

Recommendation:

Review the classes available to you. Become familiar with them. Know when to use them.

Thread-Safe collections - .NETMicrosoftLearn