Bolt-On Global Consistency for the Cloud
Zhe Wu, Wijaya Edward, Muhammed Uluyol, Harsha V. Madhyastha · 2018
Web services that enable users in multiple regions to collaborate can increase availability and decrease latency by replicating data across data centers. If such a service spreads its data across multiple cloud providers---for the associated performance, cost, and reliability benefits---it cannot rely on cloud providers to keep the data globally consistent.