我对特定网站的 Varnish 和其他网站的 Varnish 一直存在问题(按照 Varnish -wordpress的官方指南工作正常)https://www.varnish-software.com/blog/step-step-speed-wordpress-varnish-software
在同一台服务器上有其他站点(没有cms),该站点在 Varnish 缓存方面存在问题,在标题中显示最大年龄= 0,所以没有缓存,可能是因为有一个cookie PHPSESSIONID,我已经在线测试了每个指南,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);
# }
一些设置如下: 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;
}
}
还有这个:https://www.varnish-cache.org/trac/wiki/VCLExampleRemovingSomeCookies
还有其他想法吗?
最佳答案
就我而言,这是由变化 header 引起的。
变化:接受编码 会为每个不同的accept编码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不同的缓存对象
对此的一个很好的解释可以在 https://www.maxcdn.com/blog/accept-encoding-its-vary-important/ 找到。
当您仅在 Accept-encoding 上更改 header 时,请务必使用以下代码在 vcl_rcv 中对其进行规范化。 如 https://www.varnish-cache.org/docs/3.0/tutorial/vary.html 中所述
### 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;
}
}
关于php - 如何从 Varnish 缓存中删除 PHPSESSIONID,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31088129/