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Varnish缓存服务配置
Xiaoshi Xu edited this page Jan 18, 2018
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# 下载rpm包,yum安装的是旧版本,所以需要手动下载rpm包。
vcl 4.0;
# 后端服务器配置
backend default {
.host = "127.0.0.1";
.port = "80"; # 端口
.connect_timeout = 600s;
.first_byte_timeout = 600s;
.between_bytes_timeout = 600s;
.max_connections = 300;
}
acl purge {
"127.0.0.1"/16; # 允许 Purge 的来源 IP
}
# vcl_recv 表示 Varnish 收到客户端请求的时候
sub vcl_recv {
# 当 HTTP 方法是 Purge 时,检查来源 IP,如果 IP 有效,则进行 Purge 操作
if (req.method == "PURGE") {
if (!client.ip ~ purge) {
return(synth(405, "This IP is not allowed to send PURGE requests."));
}
return (purge);
}
# 不缓存有密码控制的内容和 Post 请求
if (req.http.Authorization || req.method == "POST") {
return (pass);
}
# 不缓存管理员页面和预览页面
if (req.url ~ "wp-(login|admin)" || req.url ~ "preview=true") {
return (pass);
}
# 不缓存已登录用户的内容
if (req.http.Cookie ~ "wordpress_logged_in_") {
return (pass);
}
# 只缓存百度蜘蛛
#if (req.http.user-agent !~ "Baiduspider") {
# return (pass);
#}
# 不缓存主页
if (req.url == "/" ) {
return (pass);
}
# 蜘蛛和普通访问分开,移动和电脑分开
call normalize_useragent;
# 清除 cookie,因为 WordPress 会根据用户 cookie 在评论框中直接输出昵称
unset req.http.cookie;
# 进行 hash 操作,见下面的定义
return (hash);
}
sub vcl_pipe {
return (pipe);
}
sub vcl_pass {
return (fetch);
}
# 判断是不是百度蜘蛛
# 移动端和PC端页面缓存分开存
sub normalize_useragent {
if (req.http.user-agent ~ "Baiduspider") {
if (req.http.user-agent ~ "Android|webOS|iPhone|iPod|iPad|BlackBerry|Mobile") {
set req.http.X-UserAgent = "spider-mobile";
} else {
set req.http.X-UserAgent = "spider-pc";
}
} else {
if (req.http.user-agent ~ "Android|webOS|iPhone|iPod|iPad|BlackBerry|Mobile") {
set req.http.X-UserAgent = "normal-mobile";
} else {
set req.http.X-UserAgent = "normal-pc";
}
}
}
# 定义用于缓存的键
sub vcl_hash {
# 这里使用 URL 做为键,如果是多域名站点,则需要使用 req.http.host + req.url
hash_data(req.url);
# 将useragent的缩略一起hash
hash_data(req.http.X-UserAgent);
return (lookup);
}
# 处理后端服务器的响应
sub vcl_backend_response {
# 删掉一些没有用的项
unset beresp.http.X-Powered-By;
unset beresp.http.x-mod-pagespeed;
# 对于图片之类的静态内容,删掉 cookie 并且设置浏览器缓存时间为一个月
if (bereq.url ~ "\.(css|js|png|gif|jp(e?)g|swf|ico|txt|eot|svg|woff)") {
unset beresp.http.cookie;
set beresp.http.cache-control = "public, max-age=2700000";
}
# 不缓存管理员页面和预览页面
if (bereq.url ~ "wp-(login|admin)" || bereq.url ~ "preview=true") {
set beresp.uncacheable = true;
set beresp.ttl = 30s;
return (deliver);
}
# 这一段很重要,在用户提交评论的同时,立即清空该页面的缓存,这样用户可以加载到最新的页面
# if (bereq.url == "/wp-comments-post.php") {
# ban("req.url == " + regsub(beresp.http.Location, "^http(s)?://leonax\.net(/.*/)$"))
# }
# 不缓存 Post 请求和有密码的内容
if ( bereq.method == "POST" || bereq.http.Authorization ) {
set beresp.uncacheable = true;
set beresp.ttl = 120s;
return (deliver);
}
# 只缓存正常的响应和 404
if ( beresp.status != 200 && beresp.status != 404 ) {
set beresp.uncacheable = true;
set beresp.ttl = 120s;
return (deliver);
}
# 百度蜘蛛缓存48小时
if ( bereq.http.X-UserAgent ~ "spider" ) {
unset beresp.http.cookie;
unset beresp.http.set-cookie;
set beresp.ttl = 48h;
return (deliver);
}
# else {
# set beresp.uncacheable = true;
# set beresp.ttl = 120s;
# return (deliver);
#}
unset beresp.http.set-cookie;
# 默认缓存时间是 24 小时
set beresp.ttl = 5m;
set beresp.grace = 30s;
return (deliver);
}
sub vcl_deliver {
if(obj.hits > 0) {
set resp.http.X-Cache = "HIT";
} else {
set resp.http.X-Cache = "MISS";
}
#return (deliver);
}
sub vcl_init {
return (ok);
}
sub vcl_fini {
return (ok);
}