[Nginx] 解读nginx中limit配置参数

location /downloads {
   limit_rate_after 1m;
   limit_rate 500k;
   }
 
   location / {
   proxy_pass http://localhost:3000;
   limit_except GET {
     deny all;
   }
   }

http {
  limit_conn_zone $binary_remote_addr zone=ips:10m;
  limit_conn_zone $server_name zone=servers:10m;
  limit_conn_log_level notice;
  server {
  # these limits apply to the whole virtual server
  limit_conn ips 10;
 
  # only 1000 simultaneous connections to the same server_name
  limit_conn servers 1000;
  }
}

http {
 limit_req_zone $binary_remote_addr zone=myreqzone:10m
 limit_req_log_level warn;
 server {
  ## 每个ip限定10个连接数
  ## 正常一个浏览器给每个host开两到三个连接
  ## 触发的话会返回503
  ## nodelay表示一上来就直接计算,不经过一些预热后再计算
  limit_req zone=myreqzone burst=10 nodelay;
 }
}