Points To Remember You can call the method getLifecycleService().isRunning() to check if the hazelcast clinet is up and running. Auto Reconnect to Hazelcast Server You can use the following code to reconnect to Hazelcast server, in case the hazelcast client looses the connection to the hazelcast server. if(!(hazelcastInstance!=null && hazelcastInstance.getLifecycleService().isRunning())){ // create a new hazelcast connection } return hazelcast instance