For this demo, I'm assuming a clean install of 64-bit Ubuntu Server 11.10 so you may need to change some package names or configuration file locations for other distributions. This repo is laid out as if it was starting from the root of the filesystem, so you can theoretically just extract it as is and go.

The ISO is available here: http://www.ubuntu.com/download/server/download

Add an entry for sf2-demo.local in your /etc/hosts of whatever machine you're using to access the installation.

All commands will assume you are starting from the top-level directory of the repo.

Install:

• Varnish: https://www.varnish-cache.org/
• nginx: http://nginx.org/
• PHP-FPM: http://php-fpm.org/

sudo apt-get install varnish nginx php5-fpm php5-cli php-apc php5-xdebug php5-sqlite

Note: This current Ubuntu bug (https://bugs.launchpad.net/ubuntu/+source/php5/+bug/875262) means you will probably want to comment out all the lines in /etc/php5/conf.d/sqlite.ini:

; configuration for php SQLite module
; extension=sqlite.so

Symfony has been extracted into the repo using the 2.0.12 version available here: http://symfony.com/download?v=Symfony_Standard_Vendors_2.0.12.tgz

The .gitignore file has entries matching the Symfony instructions here: http://symfony.com/doc/current/cookbook/workflow/new_project_git.html

You will need to set permissions in a way inspired by the documentation: http://symfony.com/doc/current/book/installation.html#configuration-and-setup

cd var/www/Symfony/
sudo rm -rf app/cache/*
sudo rm -rf app/logs/*
sudo chown -R :www-data  app/cache/ app/logs/
sudo chmod -R ug+rwX  app/cache/ app/logs/

Note: Using the shared storage on VMs does seem to be a bit flaky, especially with the cache files. So, try re-running the above or if in doubt, try turning it off and turning it back on again.

Remove the default site, create the logging files, and enable the new site.

sudo mkdir /var/log/php5/
sudo touch /var/log/php5/fpm.log
sudo chown www-data /var/log/php5/fpm.log
sudo rm /etc/nginx/sites-enabled/default
sudo mkdir -p /var/log/nginx/sf2-demo.local
sudo touch /var/log/nginx/sf2-demo.local/access.log /var/log/nginx/sf2-demo.local/error.log
sudo ln -s ../sites-available/sf2-demo.local /etc/nginx/sites-enabled/sf2-demo.local
sudo /etc/init.d/php5-fpm restart
sudo /etc/init.d/nginx restart

If you're running in development mode, you should now be able to access the Welcome page by visiting: http://sf2-demo.local:8080/ If you're in production mode, you should still be able to get a successful 404 response.

Assuming you're using the provided etc/default/varnish file, then Varnish is already listening on port 80. You should be able to see the same Welcome page or 404 response on: http://sf-2demo.local

The remaining changes have been made as per: http://symfony.com/doc/current/cookbook/cache/varnish.html

The Symfony configuration files have been updated as per: http://symfony.com/doc/current/book/http_cache.html#edge-side-includes

You can see the changes in:

• var/www/Symfony/app/config/config.yml
• var/www/Symfony/app/config/routing.yml

Automatically starting the session has also been disabled in config.yml to prevent sending cookies on all requests.

The example bundle has been generated using:

cd var/www/Symfony
php app/console generate:bundle --namespace=Ibuildings/EsiDemoBundle --format=yml

The use of ESI is enabled through Twig's render tag. To demonstrate this, an additional action called included has been added to the default controller along with a matching template.

• var/www/Symfony/src/Ibuildings/EsiDemoBundle/Controller/DefaultController.php
• var/www/Symfony/src/Ibuildings/EsiDemoBundle/Resources/views/Default/index.html.twig
• var/www/Symfony/src/Ibuildings/EsiDemoBundle/Resources/views/Default/included.html.twig

By setting different values for s-maxage in the cache-control header we can see that each individual section is cached for a different amount of time.

You can sit and watch the responses using curl as a way to amuse yourself:

watch curl -vs http://sf2-demo.local/esi-demo/hello/developers