说明

云主机1作为反向代理服务器

云主机1: 47.104.104.133(公网IP)
云主机2: 172.31.55.77(内网IP)

配置云主机1 nginx 配置

http {
    # 其他配置
    proxy_cache_path /ngx_tmp levels=1:2 keys_zone=test_cache:100m inactive=1d max_size=10g;

    upstream httpget {
        server 172.31.55.77:80;
    }
    
    server {
        # 其他配置
        location / {
                add_header Nginx-Cache "$upstream_cache_status";
                proxy_cache test_cache;
                proxy_cache_valid 24h;
                proxy_pass http://httpget;
        }
    }
}