Nginx RPS

user www-data;
worker_processes auto;
pid /run/nginx.pid;
worker_rlimit_nofile 4096;
events {
        worker_connections 1024;
        use epoll;
}
http {

        proxy_cache_path /var/spool/nginx/proxy keys_zone=IMAGES:10m levels=1:2 inactive=3h;
        fastcgi_cache_path /var/spool/nginx/fastcgi keys_zone=PHP:10m levels=1:2 inactive=3h;

        client_body_timeout 1m;
        client_header_timeout 1m;
        send_timeout 1m;
        proxy_read_timeout 60s;
        client_max_body_size 5000m;
        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;
         server_tokens off;
        include /etc/nginx/mime.types;
        default_type application/octet-stream;
        ssl_prefer_server_ciphers on;
        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;
        gzip on;
        gzip_disable "msie6";
         gzip_comp_level 4;
         gzip_buffers 65 8k;
         gzip_http_version 1.1;
         gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
}

server {
    listen 80;
    server_name nit.dev;
        root /var/http/public/nit;
        index index.php index.htm index.html;
        location / {
                try_files $uri $uri/ /index.php;
        }
    location ~ \.(gif|jpg|png)$ {
        proxy_pass http://127.0.0.1:81;
        include proxy_params;
        proxy_cache IMAGES;
        proxy_cache_valid any valid 1h;
        add_header X-Cache $upstream_cache_status;
    }

        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_pass unix:/run/php/php7.0-fpm.sock;
                fastcgi_index index.php;
                include fastcgi_params;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                fastcgi_cache PHP;
                fastcgi_cache_valid any valid 1h;
                }
}

weighttp -c 100 -n 100000 http://www.dev/

finished in 1950 sec, 334 millisec and 956 microsec, 51 req/s, 2230 kbyte/s
requests: 100000 total, 100000 started, 100000 done, 100000 succeeded, 0 failed, 0 errored
status codes: 100000 2xx, 0 3xx, 0 4xx, 0 5xx
traffic: 4455000150 bytes total, 48700000 bytes http, 4406300150 bytes data