nginx可否将经常访问的网站的图片信息之类缓存下来，当内部用户访问相同网站时，优先从nginx服务器取数据。?

# 文件： /etc/nginx/nginx.conf

# For more information on configuration, see:

#   * Official English Documentation: http://nginx.org/en/docs/

#   * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;

worker_processes auto;

error_log /var/log/nginx/error.log;

pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/nginx/README.dynamic.

include /usr/share/nginx/modules/*.conf;

events {

    worker_connections 1024;

}

http {

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '

                      '$status $body_bytes_sent "$http_referer" '

                      '"$http_user_agent" "$http_x_forwarded_for" "$request_time"';

    access_log  /var/log/nginx/access.log  main buffer=32k flush=30s;

    server_tokens       off;

    client_max_body_size 100m;

    sendfile            on;

    tcp_nopush          on;

    tcp_nodelay         on;

    keepalive_timeout   65;

    types_hash_max_size 2048;

    include             /etc/nginx/mime.types;

    default_type        application/octet-stream;

    # ssl配置

    ssl_protocols TLSv1.2 TLSv1.3;

    ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384;

    ssl_ecdh_curve secp384r1;

    ssl_prefer_server_ciphers on;

    ssl_session_cache shared:SSL:10m;

    ssl_session_timeout 10m;

    ssl_session_tickets off;

    ssl_stapling on; # Requires nginx >= 1.3.7

    ssl_stapling_verify on; # Requires nginx => 1.3.7

    add_header Strict-Transport-Security "max-age=63072000; preload";

    #add_header X-Frame-Options DENY;

    add_header X-Frame-Options SAMEORIGIN;

    add_header X-Content-Type-Options nosniff;

    add_header X-XSS-Protection "1; mode=block";

    # 请按照自己的需求更改

    fastcgi_cache_path /var/cache/nginx/tlanyan levels=1:2 keys_zone=tlanyan:10m inactive=30m use_temp_path=off; 

    fastcgi_cache_key $request_method$scheme$host$request_uri;

    # note: can also use HTTP headers to form the cache key, e.g.

    #fastcgi_cache_key $scheme$request_method$host$request_uri$http_x_custom_header;

    #fastcgi_cache_lock on;

    fastcgi_cache_use_stale error timeout invalid_header updating http_500;

    fastcgi_cache_valid 200 301 302 10h;

    fastcgi_cache_valid 404 10m;

    fastcgi_ignore_headers Expires Set-Cookie Vary;

    # gzip 配置

    gzip on;

    gzip_min_length  1k;

    gzip_buffers     4 16k;

    gzip_comp_level 7;

    gzip_types

        text/css

        text/plain

        text/javascript

        application/javascript

        application/json

        application/x-javascript

        application/xml

        application/xml+rss

        application/xhtml+xml

        application/x-font-ttf

        application/x-font-opentype

        application/vnd.ms-fontobject

        image/svg+xml

        image/x-icon

        application/rss+xml

        application/atom_xml

        image/jpeg

        image/gif

        image/png

        image/icon

        image/bmp

        image/jpg;

    gzip_vary on;

    # Load modular configuration files from the /etc/nginx/conf.d directory.

    # See http://nginx.org/en/docs/ngx_core_module.html#include

    # for more information.

    include /etc/nginx/conf.d/*.conf;

}

server {

    listen 80;

    listen [::]:80;

    server_name www.tlanyan.me tlanyan.me; # 请换成自己的域名

    rewrite ^(.*) https://$server_name$1 permanent;

}

server {

    listen       443 ssl http2;

    listen       [::]:443 ssl http2;

    server_name www.tlanyan.me tlanyan.me; # 请换成自己的域名

    charset utf-8;

    ssl_certificate /etc/nginx/conf.d/tlanyan.pem;  # 请换成自己的证书和密钥

    ssl_certificate_key /etc/nginx/conf.d/tlanyan.key;

    set $host_path "/var/www/tlanyan";  # 请改成自己的路径

    access_log  /var/log/nginx/tlanyan.access.log  main buffer=32k flush=30s;

    error_log /var/log/nginx/tlanyan.error.log;

    root   $host_path;

    # 缓存标记

    set $skip_cache 0;

    if ($query_string != "") {

        set $skip_cache 1;

    }

    if ($request_uri ~* "/wp-admin/|/xmlrpc.php|wp-.*.php|/feed/|sitemap(_index)?.xml") {

        set $skip_cache 1;

    }

    # 登录用户或发表评论者

    if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in") {

        set $skip_cache 1;

    }

    location = / {

        index  index.php index.html;

        try_files /index.php?$args /index.php?$args;

    }

    location / {

        index  index.php index.html;

        try_files $uri $uri/ /index.php?$args;

    }

    location ~ ^/\.user\.ini {

            deny all;

    }

    location ~ \.php$ {

        try_files $uri =404;

        fastcgi_index index.php;

        fastcgi_pass   127.0.0.1:9000;

        fastcgi_cache tlanyan;

        fastcgi_cache_valid 200 301 302 30m;

        fastcgi_cache_valid 404 10m;

        fastcgi_cache_bypass $skip_cache;

        fastcgi_no_cache $skip_cache;

        fastcgi_cache_lock on;

        include fastcgi_params;

        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;

    }

    location ~ \.(js|css|png|jpg|gif|swf|ico|pdf|mov|fla|zip|rar|jpeg)$ {

        expires max;

        access_log off;

        try_files $uri =404;

    }

}