This proof-of-concept project showcases how to use PubNub and Node.js for global, multi-data center MongoDB replication, although it is not yet production-ready. It involves setting up MongoDB with replication sets, where one node is designated as primary and secondary nodes can be promoted if the primary fails, and using the oplog to track changes. Users need a PubNub account to access unique keys for running the sample code, which includes configuring a test MongoDB instance and initiating a replication client to listen to the oplog and send updates to a PubNub channel. While the project aims to inspire and facilitate discussions, it has not undergone scale testing, and feedback is sought for future improvements to make the code more robust and production-ready.