In today's post we discuss, Wide-area data services
This is a term used to describe the set of issues that enterprise applications face in terms of network slowness, application performance, data coherency and other such data issues when the same enterprise applications are required to be shared by various branch offices and personnel. Think of a hypothetical example where a CAD software is being used to design a bridge by offices across the continents. The bridge will be modeled completely to the finest detail and at a pace where the engineers don't feel limited in the data they collaborate with to build the model. There is only one instance of the bridge and it is electronic at any given time.
Although the example serves to illustrate the context, wide-area data services are not restricted to one application. It is used to address data traffic issues that can improve such things as file sharing, email, backup, document management system, IT tools, as well as ERP and CRM solutions.
Together, the set of techniques used to achieve this speedup in the use of WAN applications is referred to as WAN optimization.
Riverbed is a pioneer in this area. We review the technical information on its optimization system as available on the Internet.
Riverbed's optimization System has four major components that address different technical concerns.
1) Data Streamlining - This looks into data deduplication so that the WAN bandwidth is reduced and applications can be prioritized by bandwidth and latency.
2) Transport Streamlining - This looks into different transport issues that removes inefficiencies when a data transfer must happen.
3) Application Streamlining - This looks into application protocol performance so that unnecessary round trips are avoided. Note that there is a line between mutating an existing application for performance improvement and reworking the application level protocol behavior. The former is neither allowed nor viable without source code and mere reverse engineering. The latter is non-invasive and more traffic oriented.
4) Management Streamlining - This looks into deployment and management and virtualizing branch office services.
Usually this solution is available in the form of a hardware appliance and a software client. The former works at the traffic level and the latter is installed at individual workstations.
By the way, wide area data services improvements are not restricted to applications but can also be applied to Cloud technologies including VMWare vSphere datacenter applications.


#codingexercise



Double  GetNthRootProductOddAndEvenRaisedPPlusQ (Double [] A,Double  p, Double q)


{


If ( A== null) return 0;


Return A.NthRootProductOddAndEvenRaisedPPlusQ(p, q);


}