Tomcat takes around 1.5 minutes to get sessions from Next Active Couchbase Node when one Couchbase Nodes goes down

#1

When a couchbase node goes down in a cluster The tomcat waits for around 1.5 minutes to get sessoins from the next active node from the Couchbase cluster. Is there any configuration change to be done to reduce this delay

please find the configuration used

Can couchbase handle immediate failover

Thanks a lot