Nginx Limit connections edit in block?

Hi

I just add this to the global nginx.conf file:

Code:

limit_conn_zone $binary_remote_addr zone=alpha:8m;

and now i want to ad this to the domain config under the server {

Code:

limit_conn alpha 5;

But on this file i have two blocks starting with server {
On which one i must add it?

---

Code:

server {
  listen  80;
  server_name mydomain.com;
  return 301 $scheme://www.mydomain.com$request_uri;
  }

server {
  server_name www.mydomain.com;

Thanks

 

My main problem is that when i try siege from another server and hit my server it is going very slow and i want to limit the requests so i can get an error or wait status after x connections

So i can avoid others do this to my server ...

Is this ok what i try to do for this scenario?

 

Ok i add it and test it but it is slow again.... and server load in 5 minutes goes up to 18

values that i use:

main config:

Code:

http {
...
limit_conn_zone $binary_remote_addr zone=alpha:8m;
limit_req_zone $binary_remote_addr zone=delta:8m rate=80r/s;
...

Domain config:

Code:

server {
...
limit_conn alpha 15;
limit_req zone=delta burst=100 nodelay;
...

Is there any other way?