Introduction
If you want to use Varnish with Virtual Hosts, you may face the problem of Varnish showing only the default site and not all other virtual sites.
Do not try to fix it tweaking Varnish, as this is something you need to solve in Apache or Nginx configuration, depending on which of them is behind varnish.
In this post I'll show you how to configure both of them Nginx and Apache.
How to c
I am setting up a single Debian server serving Magento with Mysql. High load is expected (millions of hits per day). I've been reading various people's comments and found so many different setups but I am not sure what to do if I want to. Load balancing between several servers would of course be nice but I have only one server.
On Debian I have Varnish cache in front of apache and get 503 error when I try to get urls which are rarely fetched.
Currently I migrating my environment with Varnish + Apache + mod_php to
Varnish + Nginx + php-fpm.
When i set up new env Nginx + Varnish + php_fpm, ESI not work's
varnish.cfg ESI
vcl_fetch sub {
set beresp.do_esi = true;
set beresp.ttl = 5s;
}
Do I need to run additional ESI module in nginx?
Introduction
OK, you now have varnish installed on your server and you started to catch the pages on it, so your webserver is now missing the hits to your pages.
Well, that is great for your webserver load, but not too good for your statistics analysis, because /var/log/apache/access_log will miss the hit.
In case you don’t know yet about Varnish, here is something about it from Wikipedia:
My site uses nginx, varnish, jboss. And some url will be cached by varnish, it depends a response header from jboss.
The first time, jboss tells varnish doesn't cache this url. Then the second request, jboss tells varnish to cache, but varnish won't cache it.
We are currently spiking a Varnish implementation to see if it would be appropriate to sit in front of our Rails application.
We want Varnish to cache the results of an API call and only hit the application when the client's ETag doesn't match the one stored in Varnish or the client's modified date is before Varnish's.
So far, I have not seen Varnish take these values into account.
We only get
Every time I attempt to add an extra back end into our VCL file, it's fails.
Here is the DAEMON_OPTS we are running off:
DAEMON_OPTS="-a :80 \
-T localhost:6082 \
-f /etc/varnish/custom.vcl \
-u varnish -g varnish \
-S /etc/varnish/secret \
-s malloc,10G"
And here is the offending backend(s)
backend b1 {
.host = "114.123.456.78
Putting Varnish In Front Of Apache On Ubuntu/Debian
Varnish is an open source "web accelerator" which you can use to
speed up your website. It can cache certain static elements, such as images or javascript
but you can also use it for other purposes such as Loadbalancing or some
additional security.
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