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http {
    server {
        location / {
            deny 192.168.1.1;
            allow all;
        }
    }
}

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±ÜÃâ¶ñÒâÇëÇó£ºÍ¨¹ýÉèÖÃÏÞÖÆÅþÁ¬ÊýºÍÏÞÖÆ»á¼ûƵÂÊ £¬¿ÉÒÔ±ÜÃâ¶ñÒâÇëÇóµÄ¹¥»÷ ¡ £¿ÉÒÔÔÚNginxµÄÉèÖÃÎļþÖÐʹÓÃlimit_connºÍlimit_reqÖ¸ÁîÀ´ÊµÏÖ £¬ÈçÏÂËùʾ£º

http {
    server {
        location / {
            limit_conn conn_limit_per_ip 10;
            limit_req zone=req_limit_per_ip burst=20 nodelay;
        }
    }
}

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http {
    server {
        location / {
            proxy_pass http://backend;
            proxy_set_header X-Real-IP $remote_addr;
        }
    }
    upstream backend {
        server backend1.example.com;
        server backend2.example.com;
    }
}

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ÉÏÊöÉèÖÃÖÐ £¬ÇëÇó»á±»·¢Ë͵½backend1.example.comºÍbackend2.example.com £¬Í¬Ê±½«Ô­Ê¼ÇëÇóµÄÕæʵIPÉèÖõ½HTTPÍ·²¿ÖÐ ¡£

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http {
    upstream backend {
        server backend1.example.com;
        server backend2.example.com;
    }
    server {
        location / {
            proxy_pass http://backend;
        }
    }
}

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ÉÏÊöÉèÖÃÖÐ £¬ÇëÇó»á±»Æ½ºâµØ·¢Ë͵½backend1.example.comºÍbackend2.example.comÖеÄЧÀÍÆ÷ÉÏ ¡£

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http {
    limit_req_zone $binary_remote_addr zone=req_limit_per_ip:10m rate=10r/s;
    server {
        location / {
            limit_req zone=req_limit_per_ip burst=20 nodelay;
        }
    }
}

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ÏÞÖÆÎļþÉÏ´«´óÐ ¡£ºÍ¨¹ýÉèÖÃNginxµÄclient_max_body_sizeÖ¸Áî £¬¿ÉÒÔÏÞÖÆÎļþÉÏ´«µÄ¾Þϸ £¬×èÖ¹ÉÏ´«´óÎļþÕ¼ÓÃЧÀÍÆ÷×ÊÔ´ ¡ £¿ÉÒÔʹÓÃÈçÏÂÉèÖôúÂ룺

http {
    server {
        client_max_body_size 10m;
        ...
    }
}

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ÉÏÊöÉèÖÃÖÐ £¬ÏÞÖÆÎļþÉÏ´«µÄ¾ÞϸΪ10MB ¡£

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server {
    listen 80;
    server_name example.com;
    return 301 https://$server_name$request_uri;
}
server {
    listen 443 ssl;
    server_name example.com;
    ssl_certificate /path/to/ssl_certificate.pem;
    ssl_certificate_key /path/to/ssl_certificate_key.pem;
    ...
}

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