You are right, Only one node will be active at any point of time. Here the HA is like Active and Standby. If one goes down the other one will become active. ** If this helps addressing your query, Do mark this as 'Accepted'. 🙂 ... View more

Eva Xiao , Messages are processed in the order they are received by Atlas. If message#1 has any error , only then message#2 is processed and action#3 specified by you can happen. ... View more