Redis is a single point of failure, which we can not easily backup.
I think mysql should be the canonical store of data.
Ignore hits that would have come form one of the many bot armies
We select the bot unicorn based upon the user agent string in the
request string. By checking if this enviroment variable is set and
ignoring hits if this is the case then setting the variable in the
case of the bot unicorn.
Merge pull request #1654 from zz9pzza/issue_3200

Issue 3200