语法: secs = ngx.req.start_time()
环境: set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*
返回当前请求创建时的时间戳，格式为浮点数，其中小数部分代表毫秒值。
以下用 Lua 代码模拟计算了 $request_time 变量值 (由 ngx_http_log_module 模块生成)
local request_time = ngx.now() - ngx.req.start_time()这个函数在 v0.7.7 版本中首次引入。
更多使用方法请参考 ngx.now 和 ngx.update_time。
English Source
syntax: secs = ngx.req.start_time()
context: set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*
Returns a floating-point number representing the timestamp (including milliseconds as the decimal part) when the current request was created.
The following example emulates the $request_time variable value (provided by ngx_http_log_module) in pure Lua:
local request_time = ngx.now() - ngx.req.start_time()This function was first introduced in the v0.7.7 release.
See also ngx.now and ngx.update_time.