Hi Mohanraj, I recommend looking at the Scalability document in the MarkLogic Server Documentation (http://developer.marklogic.com/pubs/4.1/books/cluster.pdf) as a good place to get an overview of the clustering capabilities in MarkLogic Server.
Here is a 2-minute version: A MarkLogic Server cluster is logically divided into evaluator nodes (e-nodes) and data nodes (d-nodes). This is true no matter how large or small the cluster is (i.e., if there is a single host in the MarkLogic cluster or if there are 100 hosts). Any node can operate as an e-node, as a d-node, or both. To have more than 1 host, an Enterprise Edition license is required. The e-node(s)' job is to evaluate client requests (typically XQuery requests). The d-node(s)' job is to service forest data. The e-nodes and the d-nodes communicate with each other regularly. When a query comes into an e-node, it asks all of the d-nodes if they have any data that matches the query. The d-nodes each gather up any matching data they have and send it back to the e-node. The e-node then takes all of the data, filters it (if needed), and sends it back to the client. If you need more data capacity in a cluster (that is, more content), you can scale up the d-nodes. If you need more query capacity (that is, more client requests), you can scale up the e-nodes. It is quite easy to add new nodes to a cluster. Obviously, scalability and clustering is a big topic, so this discussion will not do it justice. -Danny -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mohanraj Sent: Thursday, September 24, 2009 9:00 AM To: [email protected] Subject: [MarkLogic Dev General] Regarding cluster environment in Marklogic!!! Hi Friends, I Hope All of you are very fine. Is there a cluster environment concept in Marklogic??? If so, Kindly give brief information on it. Thanks & Regards, Mohanraj Software Programmer Laserwords Private Limited +91-9445451318 _______________________________________________ General mailing list [email protected] http://xqzone.com/mailman/listinfo/general _______________________________________________ General mailing list [email protected] http://xqzone.com/mailman/listinfo/general
