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Clustering and Load Balancing
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vikasids sharma
Ranch Hand
Joined: Aug 01, 2003
Posts: 157
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can anybody explain me the difference between clustering and load balancing?
Thanks in advance
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Thanks
Vikas Sharma
SCJP(1.4)
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Pradeep bhatt
Ranch Hand
Joined: Feb 27, 2002
Posts: 8876
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Cluster is a group of servers that appears as single unit to the client.
The advantages of a clusters are
1. Scalability : There are more servers to process requests. It is possible to add more servers without any client interruptions.
2.High avaliablity : This arises because of redundancy. If one of the servers in the cluster fails another one can take over.
Load balacing is a means of distributing client request among the servers in the cluster. We make of algorithms like DNS ROUND ROBIN, Hard ware load balancing for load balancing.
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Groovy
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Lasse Koskela
author
Sheriff
Joined: Jan 23, 2002
Posts: 11962
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Clustering is about combining a group of servers into a single managed unit while load balancing is the act of delegating incoming load (e.g. HTTP requests) to one of the server instances in the cluster.
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Author of Test Driven (2007) and Effective Unit Testing (2013) [Blog] [HowToAskQuestionsOnJavaRanch]
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subject: Clustering and Load Balancing
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