vcache – 主机软件博客

yum方式安装

rpm --nosignature -i http://repo.varnish-cache.org/redhat/el5/noarch/varnish-release-2.1-2.noarch.rpm
yum install varnish

1 2	rpm --nosignature -i http://repo.varnish-cache.org/redhat/el5/noarch/varnish-release-2.1-2.noarch.rpm yum install varnish

vcl.conf

backend main { 
       set backend.host = "192.168.0.5"; 
       set backend.port = "80"; 
}

acl purge {
       "localhost";
       "127.0.0.1";
       "192.168.1.0"/24;
}

sub vcl_recv {
       if (req.request == "PURGE") {
               if (!client.ip ~ purge) {
                       error 405 "Not allowed.";
               }
               lookup;
       }

       if (req.http.host ~ "^blog.s135.com") {
               set req.backend = main; 
               if (req.request != "GET" && req.request != "HEAD") {
                       pipe;
               }
               else {
                       lookup;
               }
       }
       else {
               error 404 "Cache Server"; 
               lookup;
       }
}

sub vcl_hit {
       if (req.request == "PURGE") {
               set obj.ttl = 0s;
               error 200 "Purged.";
       }
}

sub vcl_miss {
       if (req.request == "PURGE") {
               error 404 "Not in cache.";
       }
}

sub vcl_fetch {
       if (req.request == "GET" && req.url ~ "\.(txt|js)$") {
               set obj.ttl = 3600s;
       }
       else {
               set obj.ttl = 30d;
       }
}

backend main {

set backend.host = "192.168.0.5";

set backend.port = "80";

}

acl purge {

"localhost";

"127.0.0.1";

"192.168.1.0"/24;

}

sub vcl_recv {

if (req.request == "PURGE") {

if (!client.ip ~ purge) {

error 405 "Not allowed.";

}

lookup;

}

if (req.http.host ~ "^blog.s135.com") {

set req.backend = main;

if (req.request != "GET" && req.request != "HEAD") {

pipe;

}

else {

lookup;

}

else {

error 404 "Cache Server";

lookup;

}

sub vcl_hit {

if (req.request == "PURGE") {

set obj.ttl = 0s;

error 200 "Purged.";

}

sub vcl_miss {

if (req.request == "PURGE") {

error 404 "Not in cache.";

}

sub vcl_fetch {

if (req.request == "GET" && req.url ~ "\.(txt|js)$") {

set obj.ttl = 3600s;

}

else {

set obj.ttl = 30d;

}

这里，我对这段配置文件解释一下：
　　(1)、Varnish通过反向代理请求后端IP为192.168.0.5，端口为80的web服务器；
　　(2)、Varnish允许localhost、127.0.0.1、192.168.0.***三个来源IP通过PURGE方法清除缓存；
　　(3)、Varnish对域名为blog.s135.com的请求进行处理，非blog.s135.com域名的请求则返回“Zhang Yan Cache Server”；
　　(4)、Varnish对HTTP协议中的GET、HEAD请求进行缓存，对POST请求透过，让其直接访问后端Web服务器。之所以这样配置，是因为POST请求一般是发送数据给服务器的，需要服务器接收、处理，所以不缓存；
　　(5)、Varnish对以.txt和.js结尾的URL缓存时间设置1小时，对其他的URL缓存时间设置为30天。

　　5、启动Varnish

ulimit -SHn 51200
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on


ulimit -SHn 51200
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &


/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 help

ulimit -SHn 51200

/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on

ulimit -SHn 51200

/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &

/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 help

引用
Available commands:
ping [timestamp]
status
start
stop
stats
vcl.load
vcl.inline
vcl.use
vcl.discard
vcl.list
vcl.show
param.show [-l] []
param.set
help [command]
url.purge
dump.pool

标签： vcache

varnish Cache 配置

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