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Distributed Computing

August 5, 2009
Distributed computing:
Distributed Computing is a methodology in which a single program or application is processed by two or more computers interacting with each other over the network.
By using Distributed Computing methodology, we can reduce the burden on a single computer in the processing the program and so the efficiency and speed increases.
Distributed Computing can be viewed a virtual Supercomputer made of many individual computers.
Grid Computing:
Grid Computing is a process of using more computers effectively for a particular process. The concept is same as Distributed computing. But grid computing has some extra characteristics of how to effectively utilize the system resources.
The best example for Grid computing is SETI@Home project where thousands of people are voluntarily provided the unused process cycles of their pc¬タルs for the search of radio signals from other space to discover the intelligence life elsewhere in the universe.
To know more about SETI@Home project refer to the below link
http://whatis.techtarget.com/definition/0,,sid9_gci214195,00.html
Clustering:
Clustering is group of two or more computer so that they work together as a single computer. These computer in most cases are interconnected through fast local area network
There are two types of Clustering
Failover Clustering:
This type is providing the redundancy of services. The back server takes off in case it the current provides fails. This type maintains the state of the client.
Load Balancing Clustering:
These types of clusters get the user request and distribute it evenly with the backend ones. They don¬タルt maintain the client state.
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