我对特定网站的清漆有持久性问题，其他网站有清漆（按照varnish-wordpress的官方指南正常工作）https://www.varnish-software.com/blog/step-step-speed-wordpress-varnish-software
在同一台服务器上有其他网站（没有cms），这个网站有来自varnish的缓存问题，在标题show max age = 0，所以没有缓存，很可能因为有一个cookie PHPSESSIONID，我在线测试每个指南，但没有解决方案。
这是我的标题：
HTTP/1.1 200 OK
Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/1.0.1e-fips
X-Powered-By: PHP/5.4.27
Set-Cookie: PHPSESSID=xxxxxxxxxxxxxxxxxxxxxx; path=/
Content-Type: text/html
Content-Length: 40627
Accept-Ranges: bytes
Date: Sat, 27 Jun 2015 10:56:14 GMT
X-Varnish: 1838947681
Age: 0
Via: 1.1 varnish
Connection: keep-alive
这是我的default.vcl：
# 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 default {
.host = "127.0.0.1";
.port = "82";
}
#
# 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 {
# 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 || req.http.Cookie) {
# /* Not cacheable by default */
# 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);
# }
#
# 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);
# }
# return (hash);
# }
#
# sub vcl_hit {
# return (deliver);
# }
#
# sub vcl_miss {
# return (fetch);
# }
#
# sub vcl_fetch {
# 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;
# return (hit_for_pass);
# }
# return (deliver);
# }
#
# sub vcl_deliver {
# 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);
# }
这个设置如下： 1）
sub vcl_recv {
// Remove all cookies except the session ID.
if (req.http.Cookie) {
set req.http.Cookie = ";" + req.http.Cookie;
set req.http.Cookie = regsuball(req.http.Cookie, "; +", ";");
set req.http.Cookie = regsuball(req.http.Cookie, ";(PHPSESSID)=", "; \1=");
set req.http.Cookie = regsuball(req.http.Cookie, ";[^ ][^;]*", "");
set req.http.Cookie = regsuball(req.http.Cookie, "^[; ]+|[; ]+$", "");
if (req.http.Cookie == "") {
// If there are no more cookies, remove the header to get page cached.
remove req.http.Cookie;
}
}
}
2）
sub vcl_fetch {
if (!(beresp.http.Set-Cookie ~ "LOGIN") && !(req.http.cookie ~ "LOGIN")) {
unset beresp.http.Pragma;
unset beresp.http.Set-Cookie;
set beresp.http.Cache-Control = "public; max-age=1800";
unset beresp.http.Expires;
set beresp.ttl = 30m;
return (deliver);
}
}
sub vcl_recv {
if (req.http.Cookie ~ "LOGIN") {
set req.http.Cookie = ";" req.http.Cookie;
set req.http.Cookie = regsuball(req.http.Cookie, "; +", ";");
set req.http.Cookie = regsuball(req.http.Cookie, ";(PHPSESSID|LOGIN)=", "; 1=");
set req.http.Cookie = regsuball(req.http.Cookie, ";[^ ][^;]*", "");
set req.http.Cookie = regsuball(req.http.Cookie, "^[; ]+|[; ]+$", "");
if (req.http.Cookie == "") {
remove req.http.Cookie;
}
} else {
remove req.http.Cookie;
}
}
以及：https://www.varnish-cache.org/trac/wiki/VCLExampleRemovingSomeCookies
其他想法？
答案 0 :(得分：0)
在我的情况下，这是由变化的标题引起的。
变化：接受编码 将为每个不同的接受编码标头
创建不同的缓存对象变化：用户代理 将为每个不同的用户代理创建一个不同的缓存对象
可以在https://www.maxcdn.com/blog/accept-encoding-its-vary-important/
找到对此的详细解释如果仅在Accept-encoding上使用vary头，请确保使用以下代码在vcl_rcv中将其标准化。 如https://www.varnish-cache.org/docs/3.0/tutorial/vary.html
所述### parse accept encoding rulesets to normalize
if (req.http.Accept-Encoding) {
if (req.url ~ "\.(jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|mp4|flv)$") {
# don't try to compress already compressed files
remove req.http.Accept-Encoding;
} elsif (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} elsif (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
# unkown algorithm
remove req.http.Accept-Encoding;
}
}