What are the differences between buffered and unbuffered channels?

Buffered channels (Option 1) in Go allow multiple values to be sent into the channel without causing the sending Goroutine to block until another Goroutine receives the value. They have a fixed capacity, and once the capacity is reached, further sends will block until space becomes available. Unbuffered channels, on the other hand, are synchronous (Option 2). When a value is sent on an unbuffered channel, it will block until another Goroutine is ready to receive the value. This synchronous behavior is useful for ensuring communication and synchronization between Goroutines.