Is it possible to limit the total number of requests in Nginx?

Question

Nginx

In nginx, it is possible to set a limit on the number of requests from one ip:

limit_req_zone $binary_remote_addr zone=zzz:10m;
...
limit_req zone=zzz burst=1000 nodelay;

Is there a similar limit in nginx, but for the total number of requests, and not for one ip? And can it be considered as part of the DDOS protection system?