本文主要解析一下ngx_http_core_module、ngx_http_limit_conn_module以及ngx_http_limit_req_module中的limit相關(guān)配置參數(shù)。

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limit_rate

名稱	默認(rèn)配置	作用域	官方說明	中文解讀	模塊
limit_rate	limit_rate 0;	http, server, location, if in location	Limits the rate of response transmission to a client. The rate is specified in bytes per second. The zero value disables rate limiting. The limit is set per a request, and so if a client simultaneously opens two connections, the overall rate will be twice as much as the specified limit.	指定每秒該連接能下載的bytes,主要用來(lái)限制個(gè)別請(qǐng)求的帶寬	ngx_http_core_module
limit_rate_after	limit_rate_after 0;	http, server, location, if in location	Sets the initial amount after which the further transmission of a response to a client will be rate limited.	設(shè)置多少bytes過后將啟動(dòng)limit計(jì)數(shù),如果小于此值則不限速	ngx_http_core_module
limit_except	沒有默認(rèn)值	location	Limits allowed HTTP methods inside a location. The method parameter can be one of the following: GET, HEAD, POST, PUT, DELETE, MKCOL, COPY, MOVE, OPTIONS, PROPFIND, PROPPATCH, LOCK, UNLOCK, or PATCH. Allowing the GET method makes the HEAD method also allowed	設(shè)置除了指定的http methods外其他method將被限制，允許GET就自動(dòng)允許HEAD方法	ngx_http_core_module

實(shí)例

 location /downloads {
      limit_rate_after 1m;
      limit_rate 500k;
    }

    location / {
      proxy_pass http://localhost:3000;
      limit_except GET {
        deny all;
      }
    }

當(dāng)前標(biāo)題：解讀nginx中l(wèi)imit配置參數(shù)-創(chuàng)新互聯(lián)
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