thanks have figured it out.

Another concern is, Say the processing time of LUA file is 10 seconds and the request completes in 4 seconds. So will the total time NGINX take will be 10 secs or 14 secs ?


Here is how i have structured my conf

http {

server {

location / {
proxy_pass http://upstream123;
post_action @loglua;
}

location @loglua {
set $log '';
rewrite_by_lua_file /nginx/mylua.lua;
logformat format1 '$log';
access_log /var/log/nginx/newlog.log format1;
}
}
}