Go by Example: Channel Buffering

By default channels are unbuffered, meaning that they will only accept sends (`chan <-`) if there is a corresponding receive (`<- chan`) ready to receive the sent value. Buffered channels accept a limited number of values without a corresponding receiver for those values.
	`package main`
	`import "fmt"`
	`func main() {`
Here we `make` a channel of strings buffering up to 2 values.	`messages := make(chan string, 2)`
Because this channel is buffered, we can send these values into the channel without a corresponding concurrent receive.	`messages <- "buffered" messages <- "channel"`
Later we can receive these two values as usual.	`fmt.Println(<-messages) fmt.Println(<-messages) }`

$ go run channel-buffering.go 
buffered
channel