Systems and methods are disclosed for replicating data. An example method includes receiving at a server a current data index and current data. The server is coupled to a first node and a second node, and the current data is responsive to a request from a client. The method also includes replicating the current data and the current data index to the second node. The method further includes receiving at the server a heartbeat message including the current data index and a client identifier. The heartbeat message is from the second node, and the client identifier identifies the client. The method also includes in response to receiving the heartbeat message, sending a notification indicating that the current data has been replicated to the second node to a load balancer.