This post originated from an RSS feed registered with Java Buzz by Brian McCallister. Original Post: Topology Aware Consistency Policies Feed Title: Waste of Time Feed URL: http://kasparov.skife.org/blog/index.rss Feed Description: A simple waste of time and weblog experiment Latest Java Buzz Posts Latest Java Buzz Posts by Brian McCallister Latest Posts From Waste of Time

I am increasingly fascinated by consistency options, in a distributed storage system, made available by topology awareness on the client. For example, if you consider a write committed iff the write has been made to a majority of all storage nodes and a majority of the local nodes, where local would typically be "same datacenter," it allows you to achieve repeatable read read what you wrote consistency locally when a majority of local nodes have responded to a read request with a matching response, while still providing overall consistency across the entire system.