The semaphore Package
Let’s learn how we can use the semaphore package to control the access of goroutines to shared resources.
We'll cover the following
What is a semaphore package?
The last lesson of this chapter presents the semaphore
package, which is provided by the Go team. A semaphore is a construct that can limit or control the access to a shared resource. As we are talking about Go, a semaphore can limit the access of goroutines to a shared resource but originally, semaphores were used for limiting access to threads. Semaphores can have weights that limit the number of threads or goroutines that can have access to a resource.
The process is supported via the Acquire()
and Release()
methods, which are defined as follows:
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