CODEWITHSUNDEEP
javaspringspring-mvccachinghazelcast
R.Katnaan
R.Katnaan

Reputation: 2526

Hazelcast :: Configure for only one host with Spring

Now, I am working with spring mvc and hazel cast.

Everything is working well with my application.

For better performance, we would like to use caching method.

We can't use EhCache because we have 2 application in same server with single database.

So, we shifted to Hazelcast and we already configure and it is working.

We got what we want but the problem is hazelcast looking for other server and other server can join our server in caching process.

That is the problem.

We would like to use hazelcast for only one server and no incoming request and outgoing request to join on multicast.

We only want to share data only in our one server.

But we can't find the right configuration for it.

Our current config is as shown below:

In Java Config

Config config = new Config("instance");

NetworkConfig network = config.getNetworkConfig();

JoinConfig join = network.getJoin();

join.getMulticastConfig().setEnabled(false);

join.getTcpIpConfig().setEnabled(false);

In spring-application-context.xml

<cache:annotation-driven cache-manager="cacheManager" />

<bean id="cacheManager" class="com.hazelcast.spring.cache.HazelcastCacheManager">
    <constructor-arg ref="instance"/>
</bean> 

<hz:hazelcast id="instance">
    <hz:config>
        <hz:group name="dev" password="password"/>
    </hz:config>
</hz:hazelcast>

Caching is working well with the above codes but it join multiple server.

Please, help me to configure it for only one server, no external join.

Thanks

Upvotes: 0

Views: 809

Answers (1)

Neil Stevenson
Neil Stevenson

Reputation: 3150

Multicast is the only discovery mechanism enabled by default, so turning it off should be all that's required to stop this server joining others.

In spring-application-context.xml try

    <hz:hazelcast id="instance">
        <hz:config>
            <hz:group name="dev" password="password"/>
            <hz:network port="5701" port-auto-increment="false">
                <hz:join>
                    <hz:multicast enabled="false"/>
                </hz:join>
            </hz:network>
        </hz:config>
    </hz:hazelcast>

The Java config looks good too, but I don't see where it's used.

As proof also, change the group name to something other than "dev". "dev" is the default, so if you use a different name temporarily and you see the new name in the logs, you know your configuration is being used.

Upvotes: 1

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