connection limit

每一ip最多50連線數

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limit_conn_zone $binary_remote_addr zone=connlimit:10m;
server {
    # ...
    location / {
      limit_conn connlimit 50;
      # ...
    }
    # ...
 }

bandwith limit

當流量超過500k時限制速度為50k

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limit_conn_zone $binary_remote_addr zone=connlimit:10m;
server {
    # ...
    location / {
      limit_rate 50k;
      limit_rate_after 500k;
      # ...
    }
 }

rate limit

每秒最多50 request

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limit_req_zone $binary_remote_addr zone=one:10m rate=50r/s;
server {
    # ...
    location / {
      limit_req zone=one burst=5 nodelay;
      # ...
    }
    # ...
 }