Go’s thread pool and coroutine pool, you will understand after reading this article

Golang thread pool and coroutine pool are important concepts in concurrent programming. They can help us manage concurrent tasks more efficiently, improve program performance and resource utilization. Below, I will explain these two concepts in detail, including their implementation, usage scenarios, and principles.

Thread Pool

Concept: Thread pool is a concurrent Design pattern used to manage the creation, destruction, and to reuse of threads. The thread pool maintains multiple threads that can be used to execute tasks. After the task is completed, the thread is not immediately destroyed, but returns to the thread pool to wait for the next task. This can reduce the overhead of thread creation and destruction and improve system performance.

Thread pool principle: The principle of thread pool is to maintain a thread queue and task queue, and threads get tasks from the thread queue and execute them. When the number of tasks is greater than the number of threads, the task will wait; when the number of threads is greater than the number of tasks, the thread will wait. This can avoid the overhead of frequent creation and destruction of threads.

Implementation: In Golang, since its native concurrency model is based on Goroutines, Golang does not directly provide the concept of thread pools. However, we can achieve thread pool-like functionality by creating multiple coroutines and reusing them.