语法: ngx.update_time()
环境: init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*
强行更新Nginx当前时间缓存。此调用会涉及到一个系统调用，因此会有一些系统开销，所以不要滥用。
这个API最早出现在 v0.3.1rc32 版本中。
English Source
syntax: ngx.update_time()
context: init_worker_by_lua*, set_by_lua*, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.*
Forcibly updates the Nginx current time cache. This call involves a syscall and thus has some overhead, so do not abuse it.
This API was first introduced in v0.3.1rc32.