Thank you for this. I implemented multiversion concurrency control in Java with threads but I want to raise it to multimachine. The problem I have is that the

Thank you for this. I implemented multiversion concurrency control in Java with threads but I want to raise it to multimachine. The problem I have is that the read and write timestamps need to be available to detect if a transaction between machines conflicts. How do I synchronize read and write timestamps with minimal latency? When a database replica receives a transaction for key X, it needs (a) a timestamp that is globally accurate (b) needs to tell other replicas about it so they can detect dangerous read-write dependencies. I feel it inherently requires serialisation of timestamps to accurately determine what other nodes are doing with data. Otherwise you get dangerous read-write skew. (See the whitepaper "Serializable Snapshot Isolation") Load balancers don't do much work, except shift traffic. I wonder if a load balancer that collects timestamps and enriches requests with timestamp information would be a scalable solution?