bitly/asyncmongo — pull request #59 by bufferx (2013-04-11 12:34:00+00:00)
Title: Branch1.2.2

**Issue**
The Blocking IO Connection will causing that the tornado service can not respond new HTTP Request, when MongoDB server goes down(Error: no route to host).

**New Feature**
create Non-blocking connection to mongodb service, support for connection timeout and request timeout, when using tornado as the Async Backend