Magento – Magento CE 1.7.0.2 + Varnish + Turpentine : cache for each visitor

On a setup with :
– Magento 1.7.0.2
– Memcache
– apache 2 with APC
– Varnish
– Turpentine

It appears that the 1st time you load a page (homepage for ex.), it's being loaded from Apache (takes time …)

Then, Pressing F5 gives an instant load, with Varnish tag in the HTTP header, illustrating that varnish is here, doing his job.

Thing is : If you load the homepage again from another IP address, it's taking a while again.

It appears that Varnish makes a cache copy of every page, AND for every different visitor…

I was wondering what was the parameter I could alter to change this behaviour.
Except for my ESI blocks (that are well loaded thanks to Turpentine), the 50 websites on my Magento setup is pretty static and I thought it would be part of the same cache ?

I thought someone visiting a page, will make it cached in Varnish for everybody else ?!

Looks like it's not, and I'd be very glad if you could indicate me where to look.

Thanks,

Sorcy

The VCL source

C{
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <pthread.h>
static pthread_mutex_t lrand_mutex = PTHREAD_MUTEX_INITIALIZER;
void generate_uuid(char* buf) {
pthread_mutex_lock(&lrand_mutex);
long a = lrand48();
long b = lrand48();
long c = lrand48();
long d = lrand48();
pthread_mutex_unlock(&lrand_mutex);
sprintf(buf, "frontend=%08lx-%04lx-%04lx-%04lx-%04lx%08lx",
a,
b & 0xffff,
(b & ((long)0x0fff0000) >> 16) | 0x4000,
(c & 0x0fff) | 0x8000,
(c & (long)0xffff0000) >> 16,
d
);
return;
}
}C
import std;
backend default {
.host = "127.0.0.1";
.port = "8080";
.first_byte_timeout = 300s;
.between_bytes_timeout = 300s;
}
backend admin {
.host = "127.0.0.1";
.port = "8080";
.first_byte_timeout = 21600s;
.between_bytes_timeout = 21600s;
}
acl crawler_acl {
"127.0.0.1";
}
acl debug_acl {
"XXXXXX";
"XXXXXX";
}
sub remove_cache_headers {
unset beresp.http.Cache-Control;
unset beresp.http.Expires;
unset beresp.http.Pragma;
unset beresp.http.Cache;
unset beresp.http.Age;
}
sub remove_double_slashes {
set req.url = regsub(req.url, "(.*)//+(.*)", "\1/\2");
}
sub generate_session {
if (req.url ~ ".*[&?]SID=([^&]+).*") {
set req.http.X-Varnish-Faked-Session = regsub(
req.url, ".*[&?]SID=([^&]+).*", "frontend=\1");
} else {
C{
char uuid_buf [50];
generate_uuid(uuid_buf);
VRT_SetHdr(sp, HDR_REQ,
"\030X-Varnish-Faked-Session:",
uuid_buf,
vrt_magic_string_end
);
}C
}
if (req.http.Cookie) {
std.collect(req.http.Cookie);
set req.http.Cookie = req.http.X-Varnish-Faked-Session +
"; " + req.http.Cookie;
} else {
set req.http.Cookie = req.http.X-Varnish-Faked-Session;
}
}

sub generate_session_expires {
C{
time_t now = time(NULL);
struct tm now_tm = *gmtime(&now);
now_tm.tm_sec += 3600;
mktime(&now_tm);
char date_buf [50];
strftime(date_buf, sizeof(date_buf)-1, "%a, %d-%b-%Y %H:%M:%S %Z", &now_tm);
VRT_SetHdr(sp, HDR_RESP,
"\031X-Varnish-Cookie-Expires:",
date_buf,
vrt_magic_string_end
);
}C
}

sub vcl_recv {

//redirects if www is missing
if( !req.http.host ~ "^www" ) {
    error 750 regsub(req.http.host, "^(w+\.)?", "http://www.") + req.url;
}

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 (!true || req.http.Authorization ||
req.request !~ "^(GET|HEAD)$" ||
req.http.Cookie ~ "varnish_bypass=1") {
return (pipe);
}
call remove_double_slashes;
if (req.http.Accept-Encoding) {
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 {
unset req.http.Accept-Encoding;
}
}
if (req.http.User-Agent ~ "iP(?:hone|ad|od)|BlackBerry|Palm|Googlebot-Mobile|Mobile|mobile|mobi|Windows Mobile|Safari Mobile|Android|Opera (?:Mini|Mobi)") {
set req.http.X-Normalized-User-Agent = "mobile";
} else if (req.http.User-Agent ~ "MSIE") {
set req.http.X-Normalized-User-Agent = "msie";
} else if (req.http.User-Agent ~ "Firefox") {
set req.http.X-Normalized-User-Agent = "firefox";
} else if (req.http.User-Agent ~ "Safari") {
set req.http.X-Normalized-User-Agent = "safari";
} else if (req.http.User-Agent ~ "Chrome") {
set req.http.X-Normalized-User-Agent = "chrome";
} else if (req.http.User-Agent ~ "Opera") {
set req.http.X-Normalized-User-Agent = "opera";
} else {
set req.http.X-Normalized-User-Agent = "other";
}
if (req.url ~ "^(/)(?:(?:index|litespeed)\.php/)?") {
set req.http.X-Turpentine-Secret-Handshake = "1";
if (req.url ~ "^(/)(?:(?:index|litespeed)\.php/)?admin") {
set req.backend = admin;
return (pipe);
}
if (req.http.Cookie ~ "\bcurrency=") {
set req.http.X-Varnish-Currency = regsub(
req.http.Cookie, ".*\bcurrency=([^;]*).*", "\1");
}
if (req.http.Cookie ~ "\bstore=") {
set req.http.X-Varnish-Store = regsub(
req.http.Cookie, ".*\bstore=([^;]*).*", "\1");
}
if (req.url ~ "/turpentine/esi/getBlock/") {
set req.http.X-Varnish-Esi-Method = regsub(
req.url, ".*/method/(\w+)/.*", "\1");
set req.http.X-Varnish-Esi-Access = regsub(
req.url, ".*/access/(\w+)/.*", "\1");
if (req.http.X-Varnish-Esi-Method == "esi" && req.esi_level == 0 &&
!(false || client.ip ~ debug_acl)) {
error 403 "External ESI requests are not allowed";
}
}
if (req.http.Cookie !~ "frontend=") {
if (client.ip ~ crawler_acl ||
req.http.User-Agent ~ "^(?:ApacheBench/.*|.*Googlebot.*|JoeDog/.*Siege.*|magespeedtest\.com|Nexcessnet_Turpentine/.*)$") {
set req.http.Cookie = "frontend=crawler-session";
} else {
call generate_session;
}
}
if (true &&
req.url ~ ".*\.(?:css|js|jpe?g|png|gif|ico|swf)(?=\?|&|$)") {
unset req.http.Cookie;
unset req.http.X-Varnish-Faked-Session;
return (lookup);
}
if (req.url ~ "^(/)(?:(?:index|litespeed)\.php/)?(?:admin|api|cron\.php|checkout/cart|onepagecheckout|customer|paybox|contacts|paypal|amshopby)" ||
req.url ~ "\?.*__from_store=") {
return (pipe);
}

if (true &&
req.url ~ "(?:[?&](?:__SID|XDEBUG_PROFILE)(?=[&=]|$))") {
return (pass);
}
if (req.url ~ "[?&](utm_source|utm_medium|utm_campaign|gclid|cx|ie|cof|siteurl)=") {
set req.url = regsuball(req.url, "(?:(\?)?|&)(?:utm_source|utm_medium|utm_campaign|gclid|cx|ie|cof|siteurl)=[^&]+", "\1");
set req.url = regsuball(req.url, "(?:(\?)&|\?$)", "\1");
}
return (lookup);
}
}

sub vcl_pipe {
unset bereq.http.X-Turpentine-Secret-Handshake;
set bereq.http.Connection = "close";
}

sub vcl_hash {
hash_data(req.url);
if (req.http.Host) {
hash_data(req.http.Host);
} else {
hash_data(server.ip);
}
hash_data(req.http.Ssl-Offloaded);
if (req.http.X-Normalized-User-Agent) {
hash_data(req.http.X-Normalized-User-Agent);
}
if (req.http.Accept-Encoding) {
hash_data(req.http.Accept-Encoding);
}
if (req.http.X-Varnish-Store || req.http.X-Varnish-Currency) {
hash_data("s=" + req.http.X-Varnish-Store + "&c=" + req.http.X-Varnish-Currency);
}
if (req.http.X-Varnish-Esi-Access == "private" &&
req.http.Cookie ~ "frontend=") {
hash_data(regsub(req.http.Cookie, "^.*?frontend=([^;]*);*.*$", "\1"));
}
return (hash);
}

sub vcl_hit {
}
sub vcl_fetch {
set req.grace = 15s;
if (req.url ~ "^(/)(?:(?:index|litespeed)\.php/)?") {
unset beresp.http.Vary;
set beresp.do_gzip = true;
if (beresp.status != 200 && beresp.status != 404) {
set beresp.ttl = 15s;
return (hit_for_pass);
} else {
if (beresp.http.Set-Cookie) {
set beresp.http.X-Varnish-Set-Cookie = beresp.http.Set-Cookie;
unset beresp.http.Set-Cookie;
}
call remove_cache_headers;
if (beresp.http.X-Turpentine-Esi == "1") {
set beresp.do_esi = true;
}
if (beresp.http.X-Turpentine-Cache == "0") {
set beresp.ttl = 15s;
return (hit_for_pass);
} else {
if (true &&
bereq.url ~ ".*\.(?:css|js|jpe?g|png|gif|ico|swf)(?=\?|&|$)") {
set beresp.ttl = 2592000s;
set beresp.http.Cache-Control = "max-age=2592000";
} elseif (req.http.X-Varnish-Esi-Method) {
if (req.http.X-Varnish-Esi-Access == "private" &&
req.http.Cookie ~ "frontend=") {
set beresp.http.X-Varnish-Session = regsub(req.http.Cookie,
"^.*?frontend=([^;]*);*.*$", "\1");
}
if (req.http.X-Varnish-Esi-Method == "ajax" &&
req.http.X-Varnish-Esi-Access == "public") {
set beresp.http.Cache-Control = "max-age=" + regsub(
req.url, ".*/ttl/(\d+)/.*", "\1");
}
set beresp.ttl = std.duration(
regsub(
req.url, ".*/ttl/(\d+)/.*", "\1s"),
300s);
if (beresp.ttl == 0s) {
set beresp.ttl = 15s;
return (hit_for_pass);
}
} else {
set beresp.ttl = 99999s;
}
}
}
return (deliver);
}
}

sub vcl_deliver {
if (req.http.X-Varnish-Faked-Session) {
call generate_session_expires;
set resp.http.Set-Cookie = req.http.X-Varnish-Faked-Session +
"; expires=" + resp.http.X-Varnish-Cookie-Expires + "; path=/";
if (req.http.Host) {
set resp.http.Set-Cookie = resp.http.Set-Cookie +
"; domain=" + regsub(req.http.Host, ":\d+$", "");
}
set resp.http.Set-Cookie = resp.http.Set-Cookie + "; httponly";
unset resp.http.X-Varnish-Cookie-Expires;
}
if (false || client.ip ~ debug_acl) {
set resp.http.X-Varnish-Hits = obj.hits;
set resp.http.X-Varnish-Esi-Method = req.http.X-Varnish-Esi-Method;
set resp.http.X-Varnish-Esi-Access = req.http.X-Varnish-Esi-Access;
set resp.http.X-Varnish-Currency = req.http.X-Varnish-Currency;
set resp.http.X-Varnish-Store = req.http.X-Varnish-Store;
} else {
unset resp.http.X-Varnish;
unset resp.http.Via;
unset resp.http.X-Powered-By;
unset resp.http.Server;
unset resp.http.X-Turpentine-Cache;
unset resp.http.X-Turpentine-Esi;
unset resp.http.X-Turpentine-Flush-Events;
unset resp.http.X-Turpentine-Block;
unset resp.http.X-Varnish-Session;
unset resp.http.X-Varnish-Set-Cookie;
}
}

sub vcl_error {

// catch missing www error
 if (obj.status == 750) {
       set obj.http.Location = obj.response;
       set obj.status = 301;
       return (deliver);
   }
}