Link to blog is broken

On [andyinthecloud blog](https://andyinthecloud.com/2015/10/18/setup-audit-trail-api-in-winter16/), I found this [link](https://www.safaribooksonline.com/blog/2013/11/04/auditforce-native-surfacing-of-the-salesforce-setup-audit-trail/) but the link just goes to the Oreilly home page

Do you have doc on this tool?