The benefit of Zend Server Monitoring

I was sitting at my computer this morning when an email came in notifying me that there was an error indexing my Lucene content.  This error was generated by the Zend Server event monitoring system.  I went to the site and tried doing a search but saw that the results were coming up double.

I re-ran the indexing task and the searches started coming up the way they should.  Mean time to resolution? 5 minutes.  Customer impact?  Zero.  Why?  Because I knew there was a problem before anyone coming to the site did.  THAT is the benefit of Zend Server Event Monitoring.