Locality of Interest — Facebook is heavily dependent on centralized U.S. data centers to provide consistent service to users all over the world. Therefore, users outside the United States experience slow response time. Also, a lot of unnecessary traffic is generated on the Internet backbone.Wittie et al. [8] investigate the detailed causes of these two problems and identify mitigation opportunities. It is found that Online Social Networks state is amenable to partitioning, and its fine-grained distribution and processing can significantly improve performance without loss in service consistency. Based on simulations of reconstructed Facebook traffic over measured Internet paths, it is shown that user requests can be processed 79 percent faster and use 91 percent less bandwidth. Therefore, the partitioning of Online Social Networks state is an attractive scaling strategy for Online Social Networks service providers.