Wide Area Tentative Scaling (WATS) for Quick Response in Distributed Cloud Computing
June 6, 2014
Grazed from Hitachi. Author: Editorial Staff.
Business applications (e.g., CRM and ERP) in private cloud computing systems are accessed from all over the world owing to modern-day globalization. This makes it difficult for the cloud to deliver a good response time in fact, the response time can be hundreds or even thousands of milliseconds if terminals access the applications from a great distance.
This exceeds the maximum response time for end users to use applications without deteriorated usability. Contents delivery networks reduce the response time of static (i.e., read-only) Web content, but it does not work for dynamic (i.e., read/write) content such as business applications. To lower the response time, applications and data should be replicated at datacenters (DCs) in the same geographical regions as the terminals by federating multiple clouds. Most terminals are globally distributed, while most DC locations provided by a cloud servicer are typically limited to a few regions…
To overcome this limitation, federation or interconnection of multiple clouds is a promising technology that enables the utilization of the multiple clouds including public clouds. Common standards and policies to provide a universal environment for clouds have recently been formulated…
Read more from the source @ http://www.hitachi.com/rd/portal/conf/2014/ccw/index.html