This chapter addressed many important topics related to goroutines. Mainly, however, it clarified the power of the select statement. Additionally, it demonstrated the use of the context standard Go package.
Due to the capabilities of the select statement, channels are the preferred Go way for interconnecting the components of a Go program.
There are many rules in concurrent programming; however, the most important rule is that you should avoid sharing things unless you have a pretty good reason to do so. Shared data is the root of all nasty bugs in concurrent programming.
What you must remember from this chapter is that although shared memory used to be the only way for exchanging data over the threads of the same process, Go offers better ways for goroutines to communicate with each other. So think in Go terms before deciding to use shared memory in your Go code. Nonetheless, if you really have to use shared memory, you might want to use a monitor goroutine instead.
The primary subjects...