Channel buffering

Context

Buffered channels have a capacity. Sends to a buffered channel block only when the buffer is full; receives block when the buffer is empty. Use make(chan T, capacity).

Example

Send three values to a buffered channel without an immediate receiver.

Code example

package main

import "fmt"

func main() {
    ch := make(chan string, 2)
    ch <- "buffered"
    ch <- "channel"
    fmt.Println(<-ch)
    fmt.Println(<-ch)
}

Output

buffered
channel

Useful links

• Go by Example: Channel Buffering
• Go blog: Channels