Varnish+Nginx 配置----Varnish

Varnish+Nginx 配置----Varnish

分类： 缓存2013-04-17 14:53 3746人阅读 评论(0) 收藏 举报

NginxVarnish缓存

最近项目引入反向代理和缓存，熟悉了一下Squid、Apache、Valish、Nginx，根据项目实际进行选择，客观来说，采用Linux系统部署最好，也没有什么难度，但实际情况必须采用Windows系统（本着方案要结合现实的原则,研究要以Windows平台为主）。


一 Varnish启动:

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e:

cd e:\varnish\bin

set PATH=%CD%;%PATH%

varnishd -a :7575 -T :11212 -f /etc/varnish_cst_cfg.vcl -s file,E:/var/varnish/tg/cache/jjtg,1024M -p thread_pool_max=5000 -p thread_pool_min=100

REM pause

二 Varnish配置:

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# This is a basic VCL configuration file for varnish. See the vcl(7)

# man page for details on VCL syntax and semantics.

#

# Default backend definition. Set this to point to your content

# server.

backend tgweb {

.host = "192.168.45.45";

.port = "7574";

.connect_timeout = 20s;

.first_byte_timeout = 20s;

.between_bytes_timeout = 20s;

}

#允许刷新缓存的规则

#acl purgeAllow {

# #只能本机进行刷新

# "localhost";

#}

# Below is a commented-out copy of the default VCL logic. If you

# redefine any of these subroutines, the built-in logic will be

# appended to your code.

sub vcl_recv {

#判断请求主机,跳转到相应后端服务器

if(req.http.host ~ "^(.*)(tg.stockjyb.com:7575)")

{

set req.backend=tgweb;

}else{

error 408 "Hostname not found";

}

#grace缓存过期仍存放

# 若backend是健康的，则仅grace 5s，如果backend不健康，则grace 1m。

# 这里，5s的目的是为了提高高并发时的吞吐率；

# 1m的目的是，backend挂了之后，还能继续服务一段时间，期望backend挂的不要太久。。。

if (req.backend.healthy) {

set req.grace = 5s;

} else {

set req.grace = 1m;

}

#刷新缓存的处理

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

# if(!client.ip ~ purgeAllow) {

# error 405 "Not allowed.";

# }

# #转到hit或者miss处理

# return (lookup);

#}

#移除一些特定格式的cookie

if (req.url ~ "^(.*)\.(jpg|png|gif|jpeg|flv|bmp|gz|tgz|bz2|tbz|js|css|html|htm)($|\?)" ) {

#移除cookie,以便能缓存到varnish

unset req.http.cookie;

}

#Accept-Encoding 是浏览器发给服务器,声明浏览器支持的编码类型的

#修正客户端的Accept-Encoding头信息

#防止个别浏览器发送类似 deflate, gzip

if (req.http.Accept-Encoding) {

if (req.url ~ "^(.*)\.(jpg|png|gif|jpeg|flv|bmp|gz|tgz|bz2|tbz)($|\?)" ) {

remove req.http.Accept-Encoding;

}else if (req.http.Accept-Encoding ~ "gzip"){

set req.http.Accept-Encoding = "gzip";

} else if (req.http.Accept-Encoding ~ "deflate"){

set req.http.Accept-Encoding = "deflate";

} else if (req.http.Accept-Encoding ~ "sdch"){

#chrome新增加的压缩

set req.http.Accept-Encoding = "sdch";

}else {

remove req.http.Accept-Encoding;

}

}

#首次访问增加X-Forwarded-For头信息,方便后端程序获取客户端ip

if (req.restarts == 0) {

if (req.http.x-forwarded-for) {

set req.http.X-Forwarded-For =

req.http.X-Forwarded-For + ", " + client.ip;

} else {

set req.http.X-Forwarded-For = client.ip;

}

}

#if (req.request != "GET" &&

# req.request != "HEAD" &&

# req.request != "PUT" &&

# req.request != "POST" &&

# req.request != "TRACE" &&

# req.request != "OPTIONS" &&

# req.request != "DELETE") {

# /* Non-RFC2616 or CONNECT which is weird. */

# return (pipe);

#}

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

/* We only deal with GET and HEAD by default */

return (pass);

}

if (req.http.Authorization) {

/* Not cacheable by default */

return (pass);

}

#js,css文件都有Cookie,不能每次都去后台服务器去取

#if (req.http.Cookie) {

# /* Not cacheable by default */

# return (pass);

#}

#如果请求的是动态页面直接转发到后端服务器

if (req.url ~ "^(.*)\.(aspx|asmx|ashx)($|.*)") {

return (pass);

}

return (lookup);

}

sub vcl_pipe {

# Note that only the first request to the backend will have

# X-Forwarded-For set. If you use X-Forwarded-For and want to

# have it set for all requests, make sure to have:

# set bereq.http.connection = "close";

# here. It is not set by default as it might break some broken web

# applications, like IIS with NTLM authentication.

return (pipe);

}

#放过,让其直接去后台服务器请求数据

sub vcl_pass {

return (pass);

}

sub vcl_hash {

hash_data(req.url);

if (req.http.host) {

hash_data(req.http.host);

} else {

hash_data(server.ip);

}

#支持压缩的要增加,防止发送给不支持压缩的浏览器压缩的内容

if(req.http.Accept-Encoding){

hash_data(req.http.Accept-Encoding);

}

return (hash);

}

#缓存服务器lookup查找命中:hit

sub vcl_hit {

#刷新缓存的请求操作,设置TTL为0,返回处理结果代码

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

# set obj.ttl = 0s;

# error 200 "Purged.";

# }

//#缓存服务器命中后(查找到了)

return (deliver);

}

#缓存服务器lookup查找没有命中:miss

sub vcl_miss {

#刷新缓存的请求操作,

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

# error 404 "Not in cache.";

#}

//#缓存服务器没有命中(去后台服务器取)

return (fetch);

}

#从后台服务器取回数据后,视情况是否进行缓存

sub vcl_fetch {

#如果请求的是动态页面直接发转发

#动态请求回来的,一定要放在前面处理

if (req.url ~ "^(.*)\.(aspx|asmx|ashx)($|.*)") {

set beresp.http.Cache-Control="no-cache, no-store";

unset beresp.http.Expires;

return (deliver);

}

# 仅当该请求可以缓存时，才设置beresp.grace，若该请求不能被缓存，则不设置beresp.grace

if (beresp.ttl > 0s) {

set beresp.grace = 1m;

}

if (beresp.ttl <= 0s ||

beresp.http.Set-Cookie ||

beresp.http.Vary == "*") {

/*

* Mark as "Hit-For-Pass" for the next 2 minutes

*/

set beresp.ttl = 120 s;

#下次请求时不进行lookup,直接pass

return (hit_for_pass);

}

#设置从后台服务器获得的特定格式文件的缓存TTL

if (req.url ~ "^(.*)\.(pdf|xls|ppt|doc|docx|xlsx|pptx|chm|rar|zip)($|\?)")

{

#移除服务器发送的cookie

unset beresp.http.Set-Cookie;

#加上缓存时间

set beresp.ttl = 30d;

return (deliver);

}else if(req.url ~ "^(.*)\.(bmp|jpeg|jpg|png|gif|svg|png|ico|txt|css|js|html|htm)($|\?)"){

#移除服务器发送的cookie

unset beresp.http.Set-Cookie;

#加上缓存时间

set beresp.ttl = 15d;

return (deliver);

}else if(req.url ~ "^(.*)\.(mp3|wma|mp4|rmvb|ogg|mov|avi|wmv|mpeg|mpg|dat|3pg|swf|flv|asf)($|\?)"){

#移除服务器发送的cookie

unset beresp.http.Set-Cookie;

#加上缓存时间

set beresp.ttl = 30d;

return (deliver);

}

#从后台服务器返回的response信息中,没有缓存的,不缓存

if (beresp.http.Pragma ~"no-cache" || beresp.http.Cache-Control ~"no-cache" || beresp.http.Cache-Control ~"private") {

return (deliver);

}

return (deliver);

}

#缓存服务器发送到客户端前调用

sub vcl_deliver {

#下面是添加一个Header标识，以判断缓存是否命中。

if (obj.hits > 0) {

set resp.http.X-Cache = "HIT from TG.varnish-cache.jjcj.com";

#set resp.http.X-Varnish = "HIT from TG.varnish-cache.jjcj.com";

} else {

set resp.http.X-Cache = "MISS from TG.varnish-cache.jjcj.com";

#set resp.http.X-Varnish = "MISS from TG.varnish-cache.jjcj.com";

}

#去掉不是必须的header

unset resp.http.Vary;

unset resp.http.X-Powered-By;

unset resp.http.X-AspNet-Version;

return (deliver);

}

sub vcl_error {

set obj.http.Content-Type = "text/html; charset=utf-8";

set obj.http.Retry-After = "5";

synthetic {"

<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html>

<head>

<title>"} + obj.status + " " + obj.response + {"</title>

</head>

<body>

<h1>Error "} + obj.status + " " + obj.response + {"</h1>

<p>"} + obj.response + {"</p>

<h3>Guru Meditation:</h3>

<p>XID: "} + req.xid + {"</p>

<hr>

<p>Varnish cache server</p>

</body>

</html>

"};

return (deliver);

}

sub vcl_init {

return (ok);

}

sub vcl_fini {

return (ok);

}