[ActiveMQ]How to setup fault-tolerant consumer node?

I have a consumer node that consumes messages from a ActiveMQ topic server, and I want to add a backup consumer node in case the primary consumer node is down. But how to setup these two consumer nodes to make them work together? -- View this message in context: http://activemq.2283324.n4.nabbl

Will the consumer of a low speed lost messages?

I made a simple program that pushes message to a topic at a very high speed, and in the other end there is a consumer with lower processing speed(work in sync mode), so will the consumer lost messages? According to my test, if I push messages to the topics, my consumer only processed about 12