One real-world use case is differential synchronization. Here's a Google Tech Talk on the subject: https://www.youtube.com/watch?v=S2Hp_1jqpY8 https://www.yout

One real-world use case is differential synchronization. Here's a Google Tech Talk on the subject: https://www.youtube.com/watch?v=S2Hp_1jqpY8 https://www.youtube.com/watch?v=S2Hp_1jqpY8 This is for real-time collaborative editing or replication of structured data (unlike Operational Transformation, which is optimized for text). Sending patches back and forth is at the core of the protocol.