varnish缓存安装使用

varnish PDF http://files.cnblogs.com/jimingsong/varnish.pdf

目前介绍CentOS6.4-64位系统 yum安装varnish：

配置varnish yum源, vim /etc/yum.repos.d/varnish.repo 添加如下内容保存

[varnish-3.0]
name=Varnish 3.0 for Enterprise Linux el6 - $basearch
baseurl=http://repo.varnish-cache.org/redhat/varnish-3.0/el6/$basearch
enabled=1
gpgcheck=0
#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-VARNISH

　更新本地yum源

yum clean all
yum repolist

　安装varnish3 - varnish3.0.5(目前稳定版)

yum  -y install varnish

文件介绍

/etc/init.d/varnish 启动脚本 - 默认不需要修改

/etc/varnish/default.vcl

###########后台代理服务器########
backend server_image {
        .host = "10.20.20.30";
        .port = "8081";
}

sub vcl_recv {

###########Image域########
if (req.http.host ~ "^image.zcyun.cn") {
        set req.backend = server_image;
        if (req.request != "GET" && req.request != "HEAD") {
                return(pipe);
                }
        else {
                return(lookup);
                }
}
###########Image域##########

else {
        error 404 "Sorry,Your request no found";
        return(lookup);
        }

}

sub vcl_fetch {

        set beresp.grace = 5m;

        if (beresp.status == 404 || beresp.status == 503 || beresp.status == 500) {
                set beresp.http.X-Cacheable = "NO: beresp.status";
                set beresp.http.X-Cacheable-status = beresp.status;
                return (hit_for_pass);
        }

        if (req.request == "GET" && req.url ~ "(?i)\.php($|\?)"){
                return (hit_for_pass);
         }

        if (req.request == "GET" && req.url ~ "(?i)\.ashx($|\?)"){
                return (hit_for_pass);
         }

         if (req.url ~ "\.(php|shtml|asp|aspx|jsp|js|ashx)$") {
                return (hit_for_pass);
         }

        if (req.url ~ "\.(js|css|jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf).*$") {
             set req.http.x-host = req.http.host;
             set req.http.x-url = req.url;
             set req.http.host = "image.xxxxx.cn";
             set req.url = regsub(req.url, "\?.*", "");
             set beresp.ttl = 7d;
             unset beresp.http.set-cookie;
        }

        if (beresp.ttl <= 0s) {
                set beresp.http.X-Cacheable = "NO: !beresp.cacheable";
                return (hit_for_pass);
        }
        else {
                unset beresp.http.expires;
        }

        if (req.url ~ "(.js|.css)$") {
                set beresp.ttl = 10m;
        }
        return (deliver);

}

sub vcl_deliver {

if (resp.http.magicmarker) {

     unset resp.http.magicmarker;

     set resp.http.age = "0";
 }

# add cache hit data
if (obj.hits > 0) {

   set resp.http.X-Cache = "HIT";
   set resp.http.X-Cache-Hits = obj.hits;
}
else {
     set resp.http.X-Cache = "MISS";
}

# hidden some sensitive http header returning to client, when the cache server received from backend server response
remove resp.http.X-Varnish;
remove resp.http.Via;
remove resp.http.Age;
remove resp.http.X-Powered-By;
remove resp.http.X-Drupal-Cache;

return (deliver);
}

sub vcl_error {
 if (obj.status == 503 && req.restarts < 5) {
   set obj.http.X-Restarts = req.restarts;
   return (restart);
 }
}

sub vcl_hit {

if (req.http.Cache-Control ~ "no-cache") {

  if (! (req.http.Via || req.http.User-Agent ~ "bot|MSIE")) {
      set obj.ttl = 0s;
      return (restart);
   }
}
  return(deliver);
}

　　

/etc/sysconfig/varnish

        NFILES=131072
        MEMLOCK=82000
        RELOAD_VCL=1
        VARNISH_VCL_CONF=/etc/varnish/default.vcl
        VARNISH_LISTEN_PORT=80
        VARNISH_ADMIN_LISTEN_ADDRESS=0.0.0.0
        VARNISH_ADMIN_LISTEN_PORT=6082
        VARNISH_MIN_THREADS=1
        VARNISH_MAX_THREADS=5000
        VARNISH_THREAD_TIMEOUT=120
        VARNISH_STORAGE_FILE=/var/lib/varnish/varnish_storage.bin
        VARNISH_STORAGE_SIZE=4G
        #KINEPOLIS_VARNISH_STORAGE="file,/var/lib/varnish/varnish_storage.bin,4G"
        KINEPOLIS_VARNISH_STORAGE="malloc,10240m"
        KINEPOLIS_CONNECT_TIMEOUT="connect_timeout=600"
        VARNISH_TTL=900
        DAEMON_OPTS="-a ${VARNISH_LISTEN_ADDRESS}:${VARNISH_LISTEN_PORT} \
                     -f ${VARNISH_VCL_CONF} \
                     -T ${VARNISH_ADMIN_LISTEN_ADDRESS}:${VARNISH_ADMIN_LISTEN_PORT} \
                     -t ${VARNISH_TTL} \
                     -w ${VARNISH_MIN_THREADS},${VARNISH_MAX_THREADS},${VARNISH_THREAD_TIMEOUT} \
                     -u varnish -g varnish \
                     -s ${KINEPOLIS_VARNISH_STORAGE} \
                     -p ${KINEPOLIS_CONNECT_TIMEOUT} \
                        -p sess_workspace=262144 \
                        -p thread_pools=2 \
                        -p thread_pool_min=200 \
                        -p thread_pool_max=5000 \
                        -p thread_pool_add_delay=2 \
                        -p http_req_size=131072 \
                        -p http_req_hdr_len=49152 "