摘要： 作者在bio.c的头注释中对设计进行了详细的介绍/* Background I/O service for Redis. 这个文件是redis后台IO服务的实现 * * This file implements operations that we need to perform in the background. * Currently there is only a single operation, that is a background close(2) * system call. This is needed as when the process is the last .. 阅读全文