http://forum.space4j.org/posts/list/2.page JForum - http://www.jforum.net
To create a Space4J cluster is very easy and simple. Refer to the [url="http://www.space4j.org/phonebookcluster.jsp"]PhoneBookCluster.java[/url] program for an example. We also have a [url="http://s4j.mentaframework.org/posts/list/4.page"]stress program[/url] to test the cluster feature.

The source code for PhoneBookCluster.java is below:
[code]
package org.space4j.examples.phonebook;


import org.space4j.Space4J;
import org.space4j.implementation.MasterSpace4J;
import org.space4j.implementation.SlaveSpace4J;


/**
* This is to show you how simple it is to make a Space4J cluster!
*
* To make a cluster, open up two shells (or DOS) and execute in the first:
*
* java org.space4j.demos.phonebook.PhoneBookCluster master
*
* and in the second:
*
* java org.space4j.demos.PhoneBookCluster slave 127.0.0.1
*
* You can also use two different machines. Just pass the master IP address to the slave instead of 127.0.0.1.
* IMPORTANT: If you use two different machines, you must have the main Space4J dir (space4j_db) mounted, so
* both machines can have access to it.
*/
public class PhoneBookCluster extends PhoneBookIndexing {

public PhoneBookCluster(Space4J space4j) throws Exception {

super(space4j);

}

static Space4J createSpace4J(String master, String master_ip) throws Exception {

Space4J space4j = null;

if (master.equals("-master")) {

space4j = new MasterSpace4J("PhoneBook");

} else if (master.equals("-slave")) {

if (master_ip != null) {

space4j = new SlaveSpace4J("PhoneBook", master_ip);

} else {

space4j = new SlaveSpace4J("PhoneBook", "127.0.0.1");

}
}

return space4j;
}

public static void main(String[] args) throws Exception {

if (args.length < 1 || args.length > 2) {

System.out.println(
"format: java PhoneBookCluster [-master|-slave] <IP def: 127.0.0.1>");

return;
}

Space4J space4j = createSpace4J(args[0],
args.length > 1 ? args[1] : null);

PhoneBookCluster book = new PhoneBookCluster(space4j);

run(book);
}
}
[/code]



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