Get Redis Replication Right: Multi Data Center Support

This tutorial provides a proof-of-concept for global, multi-data center Redis replication using PubNub and NodeJS, targeting low throughput and high volume scenarios. It describes the challenges of Redis replication, including TCP windowing and kernel tuning, and outlines a two-phase replication process involving an initial RDB stream dump followed by real-time updates. The guide emphasizes that the current implementation is not production-ready, supports a limited subset of Redis write commands, and has not undergone scale testing. Users are encouraged to experiment with the code, which involves setting up a Redis replicator, listener, and proxy using PubNub channels, with the aim of fostering inspiration and discussion around further development and bug fixing.