Cspan

Abstract

Existing cloud computing platforms leave it up to applications to deal with the complexities associated with data replication and propagation across data centers. In our work, we propose the CSPAN key-value store to instead export a unified view of storage services in several geographically distributed data centers. To minimize the cost incurred by application providers, we combine two principles. First, CSPAN spans the data centers of multiple cloud providers. Second, CSPAN judiciously trades off the lower latencies and the higher storage and data propagation costs based on an application's anticipated workload, latency goals, and consistency requirements.

Efficient Multi-Cloud Storage Using Online Dynamic Replication and Placement Algorithms for Online Social Networks

“…However, Milani et al in [7] and Wu et al in [8] have stated that replicating objects among multiple datacenters increases the overhead of replication management and results in higher hosting costs. Using full static replication of OSN objects worldwide to ensure high availability and reduce access latency is exceptionally costly.…”