问题描述
想基于nginx日志统计某一接口如秒杀的最大并发数 nginx日志格式是这样配置的
log_format： $remote_addr [$time_local] '$request' $status $upstream_response_time $body_bytes_sent
Nginx官方文档是这样定义time_local的
$time_local
local time in the Common Log Format
现在不确定这是请求过来的时间 还是请求处理完毕后记录此条日志的时间 只有是前者才能基于该时间统计最大并发数吧
问题解答
回答1：摘自：http://serverfault.com/questi...
The $local_time variable contains the time when the log entry is written.
when the HTTP request header is read, nginx does a lookup of the associated virtual server configuration. If the virtual server is found, the request goes through six phases:
server rewrite phase
location phase
location rewrite phase (which can bring the request back to the previous phase)
access control phase
try_files phase
log phase
Since the log phase is the last one, $local_time variable is much more colse to the end of the request than it’s start.
