Material for the gocon-india 24 talk
Questioning database claims_ Design patterns of storage engines (Presented).pdf
The recording of the talk is available here.
The article describing the journey of my talk - from brainstorming the topic and building the presentation to running mock sessions and delivering the final talk, is available here.
I made a mistake with MongoDB. Phil Eaton pointed it out that the default write concern "majority" actually implies "j: true" which means data is synchronized (i.e. fsync-ed) before returning a success to a client.