I have been waiting for this since a long time. Having implemented an OLTP application using MongoDB (luckily their write loads were low), I stopped using Mongo

I have been waiting for this since a long time. Having implemented an OLTP application using MongoDB (luckily their write loads were low), I stopped using Mongo 2 years back because of the write bottleneck (it was still good for OLAP though). Good decision by the MongoDB team since they already have the market traction.