nginx 緩存設置

瀏覽器緩存原理

瀏覽器緩存

HTTP協議定義的緩存機制(如:Expires;Cache-control等)html

二、瀏覽器無緩存nginx

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三、客戶端有緩存web

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校驗過時機制

校驗是否過時                Expires、Cache-Control(max-age)瀏覽器

協議中Etag頭信息校驗        Etag緩存

Last-Modified頭信息校驗     Last-Modifiedapp

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五、配置語法-expires

添加    Cache-Control、Expires頭code

Syntax:    expires [modified]  time;server

           expires epoch|max|off;htm

Default:   expires off;                 # 靜態緩存blog

Context:   http,server,location,if in location

    location ~ .*\.(htm|html)$ {
        expires 24h;
        root  /opt/app/code;
    }

動態緩存設置

    upstream imooc {
        server 116.62.103.228:8001;
        server 116.62.103.228:8002;
        server 116.62.103.228:8003;
    }

    proxy_cache_path /opt/app/cache levels=1:2 keys_zone=imooc_cache:10m max_size=10g inactive=60m use_temp_path=off;

server {
    listen       80;
    server_name  web01.fadewalk.com;

    access_log  /var/log/nginx/test_proxy.access.log  main;


    location / {
        proxy_cache off;
        proxy_pass http://imooc;

        proxy_cache_valid 200 304 12h;
        proxy_cache_valid any 10m;
        proxy_cache_key $host$uri$is_args$args;
        add_header  Nginx-Cache "$upstream_cache_status";

        proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
        include proxy_params;
    }


}

查看

490f6cbe-bba6-4fd5-bc78-2a530a5b97f7

304 Not Modified

216a4705-d89a-4106-99bf-fea50a691b1f

0228a7cd-2983-4192-bc53-5cf217c5cc1f

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