Question

With Spring ApplicationContextRegistry, I understand that in the bean definition, scope is singleton by default. So, in the example below, the scope property is redundant.

<bean id="heartbeatHandler" class="org.cybersecurity.ewf.HeartbeatHandler" scope="singleton"/>

But in the ‘to uri’ below, I want to confirm whether we need to explicitly set cache=true?

<to uri="bean:heartBeatHandler?method=respondToHeartBeat&cache=true"/>

Why do we need to set at 2 places?

Answer 1

You don’t need to set either scope="singleton" or cache=true to use singleton beans. It’s default.

The cache just caches the registry lookup.