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 = "8080";
}
acl purge {
"localhost";
"127.0.0.1";
}

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 {
# Only cache the following site
if (req.http.host ~ "(mydomain.com)") {
set req.backend = default;
} else {
return (pass);
}
if (req.request == "PURGE") {
if (!client.ip ~ purge) {
error 405 "Not allowed.";
}
return (lookup);
}

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);
 }


 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 {
if (req.request == "PURGE") {
purge;
error 200 "Purged.";
}
return (deliver);
}

sub vcl_miss {
if (req.request == "PURGE") {
purge;
error 200 "Purged.";
}
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);
 }

set beresp.ttl = 7d;
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);
}

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SUB return purge

varnish 缓存规则 求助