Category: bufio
Package bufio implements buffered I/O. It wraps an io.Reader or io.Writer object, creating another object (Reader or Writer) that also implements the interface but provides buffering and some help for textual I/O.
Writer and Flush
What is a buffer?
Send data to a buffer (system memory) and will not write until it reaches the length. After which it writes the data and flushes the buffer.