Migrating data can be automatic: https://github.com/crowdtap/promiscuous/ https://github.com/crowdtap/promiscuous/ We use this tool to replicate data across ou

Migrating data can be automatic: https://github.com/crowdtap/promiscuous/ https://github.com/crowdtap/promiscuous/ We use this tool to replicate data across our main MongoDB database, and a PostgreSQL one (eventually consistent). We haven't wrote a comprehensive readme yet. The only documentation we have so far are slides: http://viennot.biz/promiscuous http://viennot.biz/promiscuous Stay tuned :)