Useful Buffers for Golang
A buffer of bytes that implements the Reader and Writer interfaces that will block if Read is called when the buffer is empty, until another Goroutine calls Write with some data.
I use this to simulate the behaviour of net.Conn's Read & Write in tests to block until IO is ready. (Fake net.Conn)
Buffered channels in Go are fixed size when created. This type is a drop-in replacement for a buffered channel that can grow in size at runtime as needed.
This means that a Goroutine that sends to this type will never block.