I am needing analytics data for our sites, but we they all use APC for opcode and WP object caching, along with Varnish for over-all site caching.
Is there anything I need to modify in my APC or Varnish configurations to allow your plugin to work correctly? From all of my research, Varnish will not break the default GA asynchronous code because all of the tracking is occurring on the client side in their browser.
BUT, your plugin seems to be doing more complex things than the default GA code, so I thought that there may be some compatibility issues. Varnish is stripping most cookies before sending requests to the back-end. (apache/php)
Here's my WordPress specs:
PHP 5.4.10 w/ php-fpm
Varnish 3.0.3 (running on port 80 in from of apache/php)