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June 30, 2008

clustering: http load balancer sticky session mode NOT session replication

Configure Liferay to use a clustered cache, Configure Liferay’s embedded Jackrabbit implementation for clustering.


virtual hosting->load balancer -> tomcat cluserting -> Database clustering


Clustering is not load balancing.

XXX load balancer  balance’s the load between 2 BBB servers

clustering : Group of servers for increased scalability and high availability

Increased scalability is provided by load balancing requests across the ‘clustered’ servers.
Increased availability is provided by session replication and component replication across the ‘clustered’ servers.
Increased scalability can also be provided by a hardware or software Load balancer that lives outside the server cluster.

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