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Java IoT: Blog Post

How Does In Memory Data Grid IMDG Solve the Scalability Problem?

WebSphere eXreme Scale - WXS is a IMDG - In Memory Data Grid implementation

Understanding Scalability
In understanding the scalability challenge addressed by WebSphere eXtreme Scale, let us first define and understand scalability.

Wikipedia defines scalability as a "desirable property of a system, a network, or a process, which indicates its ability to either handle growing amounts of work in a graceful manner, or to be readily enlarged. For example, it can refer to the capability of a system to increase total throughput under an increased load when resources (typically hardware) are added."

  • Scalability in a system is about the ability to do more, whether it is processing more data or handling more traffic, resulting in higher transactions
  • Scalability poses great challenges to database and transaction systems
  • An increase in data can expose demand constraints on back-end database servers
  • This can be a very expensive and short term approach to solving the problem of processing ever growing data and transactions

At some point, either due to practical, fiscal or physical limits, enterprises are unable to continue to "scale out" by simply adding hardware. The progressive approach then adopted is to "scale out" by adding additional database servers and using a high speed connection between the database servers to provide a fabric of database servers. This approach while viable, poses some challenges around keeping the databases servers synchronized. It is important to ensure that the databases are kept in sync for data integrity and crash recovery.

Solution: In-Memory Data Grid or IBM's WebSphere eXtreme Scale
WebSphere eXtreme Scale compliments the database layer to provide a fault tolerant, highly available and scalable data layer that addresses the growing concern around the data and eventually the business.

  • Scalability is never an IT problem alone. It directly impacts the business applications and the business unit that owns the applications.
  • Scalability is treated as a competitive advantage.
  • The applications that are scalable can easily accommodate growth and aid
  • The business functions in analysis and business development.

WebSphere eXtreme Scale provides a set of interconnected java processes that holds the data in memory, thereby acting as shock absorbers to the back end databases. This not only enabled faster data access, as the data is accessed from memory, but also reduces the stress on database.

more on this.....later.

More Stories By Nitin Gaur

Nitin Gaur, is currently working in capacity of Senior WebSphere Consulting IT Specialist with IBMs S&D Organization. Prior to teaming with IBM S&D organization, Nitin spend several years with WebSphere OEM team, a SWG entity and AIX support – ITS/IGS entity. In his 11 years with IBM he has achieved various industry recognized certifications and enriched his career by doing more than required by the defined job responsibilities. Prior to beginning his career with IBM, he was graduate student at University of Maryland University College. Apart from excelling in his normal job responsibilities, Nitin has been involved with many on going projects at IBM Austin. To name a few, Nitin has been an active member of Austin TVC – Technical Vitality Council, an IBM Academy affiliate since 2002.

As a technical leader Nitin has been involved in various technical paper presentations in various conferences at IBM and outside. The range of the topics presented by him span from software architectures to improvement of management processes. Nitin, has been focused on staying close to customer and always attuned to their needs and problems. One of his primary job responsibilities includes positioning WebSphere infrastructure products and providing technical solution and support to field sales teams. He is relentless in researching skills and presenting the industry best practices of IT Infrastructure. Performing advance technical research and providing IBM clients with strategic solutions on WebSphere offerings is one his forte.

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