Locking and the sync Package
Explore how to manage concurrent access in Go using the sync package's locking mechanisms such as Mutex and RWMutex. Understand how to prevent race conditions by locking critical sections when accessing shared variables, and learn about techniques to synchronize threads safely in Go programs.
We'll cover the following...
A major problem
In more complex programs, different parts of the application may execute simultaneously (or concurrently as this is technically called), usually by executing each part of the program in a different thread of the operating system. When these different parts share and work with the same variables, problems are likely to occur. The order in which these shared variables are updated cannot be predicted, and hence, their values are also unpredictable! This is commonly called a race condition. The threads race for the updates of the variables. This is, of course, intolerable in a correct program, so how do we solve this issue?
The classic approach is to let only one thread at a time change ...
