The road so far….

February 1, 2013

Mongo, the silent killer!!

Filed under: java — Tags: , , — Rahul Sharma @ 6:22 pm

I was pretty much convinced that Mongo db is not the best choice for an application.  But a recent incident makes me believe that it is a silent killerof the application. As you work with it and  increase the amount of data/ concurrency  you realize  its one or more pain points.

Our application was working fine,  and one fine day one of the bugs got reported signup is not working as expected. It was creating user but could not login them. The app was not updated from quite some time, no changes to the schema how could this happen. So then we searched for logs, and it was sparkling clean !!! But still no user creation and other db operations, for some reason. After some debugging we realized that saves are getting called but data is not available in mongo after the operations and surprisingly it does not throw errors. WTF !!!