WSO2 API Manager can be configured to track run time statistics for API invocations through Google Analytics. Google analytics is a service which allows you to track vists to a web site and generate detailed statistics based on that.
This guide explains how to setup API Manager in order to feed runtime statistics to Google analytics.
1. Setup a Google analytics account.
If you already have a google account, Sign-In. Else Create a New Google Account and Sign-In.
Then go to http://www.google.com/analytics/ and Sign-In
Click on the Admin Icon on top right
Then Click Create New Account as highlighted in below image.
http://java-wisdom.blogspot.com/2012/12/google-analytics-tracking-for-wso2-api.html