c++ - In a multi-threaded application, which concurrency pattern is faster/better, "half-sync/half-async" or "leader/follower"? -

Hypothetically, we say there are two similar multi-threaded C / C + applications (using pthread.h) Using a half-sync / half-async concurrency pattern and other leader / follower (# of thread) with 1 difference below (thousands of requests per second). Due to their relative similarity, I have given myself answers to many questions and have given a lot of answers.

What happens faster than each other? Better? What specific cases should be used on someone else? What is considered an "ideal" while the other is old?

I am basically looking for insights, so when creating a new multi-threaded application, I should plan to use a concurrent pattern.