backend node1 {
.host = "XXX.XXX.XXX.XXX";
.port = "80";
.connect_timeout = 600s;
}
director default_director round-robin {
{ .backend = node1; }
}
sub vcl_recv {
set req.backend = default_director;
set req.grace = 5m;
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.http.Accept-Encoding) {
if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|mp4|swf)$")
{
# No point in compressing these
remove req.http.Accept-Encoding;
} else if (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} else if (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
# unknown algorithm
remove req.http.Accept-Encoding;
}
}
if (req.request != "GET" &&
req.request != "HEAD" &&
req.request != "PUT" &&
req.request != "POST" &&
req.request != "TRACE" &&
req.request != "OPTIONS" &&
req.request != "DELETE") {
/* Non-RFC2616 or CONNECT which is weird. */
return (pipe);
}
if (req.request != "GET" && req.request != "HEAD") {
/* We only deal with GET and HEAD by default */
return (pass);
}
return (lookup);
}
sub vcl_pipe {
set req.http.connection = "close";
return (pipe);
}
sub vcl_pass {
return (pass);
}
sub vcl_hash {
}
sub vcl_hit {
if (!obj.cacheable) {
return (pass);
}
return (deliver);
}
sub vcl_miss {
return (fetch);
}
sub vcl_fetch {
# Grace to allow varnish to serve content if backend is lagged
set beresp.grace = 5m;
# These status codes should always pass through and never cache.
if (beresp.status == 404 || beresp.status == 503 || beresp.status == 500 || !beresp.cacheable) {
return (pass);
}
if (req.url ~ "\.(png|gif|jpg|swf|css|js|mp3|mp4)$") {
unset beresp.http.set-cookie;
}
return (deliver);
}
sub vcl_deliver {
return (deliver);
}
sub vcl_error {
set obj.http.Content-Type = "text/html; charset=utf-8";
synthetic {"
"} obj.status " " obj.response {"
Error "} obj.status " " obj.response {"
"} obj.response {"
Guru Meditation:
XID: "} req.xid {"
Varnish cache server
"};
return (deliver);
}