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相关配置参数。
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limit_rate
| 名称 |
默认配置 |
作用域 |
官方说明 |
中文解读 |
模块 |
| 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. |
指定每秒该连接能下载的bytes,主要用来限制个别请求的带宽 |
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. |
设置多少bytes过后将启动limit计数,如果小于此值则不限速 |
ngx_http_core_module |
| limit_except |
没有默认值 |
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 |
设置除了指定的http methods外其他method将被限制，允许GET就自动允许HEAD方法 |
ngx_http_core_module |
实例
location /downloads {
limit_rate_after 1m;
limit_rate 500k;
}
location / {
proxy_pass http://localhost:3000;
limit_except GET {
deny all;
}
}
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