1.负载均衡

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在http模块下添加
upstream  videoapi {   
    #weigth参数表示权值，权值越高被分配到的几率越大
    server  localhost:8080  weight=1; 
    server  localhost:8082  weight=2;  
}     

修改
server {  
    listen       80; 
    server_name  videoapi.site;  

    #反代
    location / {  
    	#访问http://videoapi
        proxy_pass http://videoapi;  
        proxy_redirect default;  
    }   
}

2.字符替换

通过sub_filter 替换相应的字符
之前想调试某个网站，但他加了反调试代码，通过我的服务器反代，删除代码，轻松解决

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location /video/playUrl {
	proxy_pass http://localhost:8082/video/playUrl;
	#去除防debug
	sub_filter "\x73\x65\x74\x49\x6e\x74\x65\x72\x76\x61\x6c\x28\x66\x75\x6e\x63\x74\x69\x6f\x6e\x28\x29\x7b\x5f\x30\x78\x31\x63\x38\x66\x36\x63\x28\x29\x7d\x2c\x34\x30\x30\x30\x29\x3b\x76\x61\x72\x20\x5f\x30\x78\x31\x63\x38\x66\x36\x63\x3d\x66\x75\x6e\x63\x74\x69\x6f\x6e\x28\x29\x7b\x66\x75\x6e\x63\x74\x69\x6f\x6e\x20\x5f\x30\x78\x34\x37\x63\x37\x39\x65\x28\x5f\x30\x78\x35\x39\x65\x62\x31\x39\x29\x7b\x69\x66\x28\x28\x22\x22\x2b\x5f\x30\x78\x35\x39\x65\x62\x31\x39\x2f\x5f\x30\x78\x35\x39\x65\x62\x31\x39\x29\x5b\x22\x6c\x65\x6e\x67\x74\x68\x22\x5d\x21\x3d\x3d\x31\x7c\x7c\x5f\x30\x78\x35\x39\x65\x62\x31\x39\x25\x32\x30\x3d\x3d\x3d\x30\x29\x7b\x28\x66\x75\x6e\x63\x74\x69\x6f\x6e\x28\x29\x7b\x7d\x5b\x22\x63\x6f\x6e\x73\x74\x72\x75\x63\x74\x6f\x72\x22\x5d\x28\x22\x64\x65\x62\x75\x67\x67\x65\x72\x22\x29\x28\x29\x29\x7d\x65\x6c\x73\x65\x7b\x28\x66\x75\x6e\x63\x74\x69\x6f\x6e\x28\x29\x7b\x7d\x5b\x22\x63\x6f\x6e\x73\x74\x72\x75\x63\x74\x6f\x72\x22\x5d\x28\x22\x64\x65\x62\x75\x67\x67\x65\x72\x22\x29\x28\x29\x29\x7d\x5f\x30\x78\x34\x37\x63\x37\x39\x65\x28\x2b\x2b\x5f\x30\x78\x35\x39\x65\x62\x31\x39\x29\x7d\x74\x72\x79\x7b\x5f\x30\x78\x34\x37\x63\x37\x39\x65\x28\x30\x29\x7d\x63\x61\x74\x63\x68\x28\x5f\x30\x78\x32\x62\x66\x38\x38\x61\x29\x7b\x7d\x7d\x3b\x5f\x30\x78\x31\x63\x38\x66\x36\x63\x28\x29\x3b" '';
}

3.以json返回网站目录下文件信息

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location /conf/ {
	autoindex on;
	autoindex_format json;
}