title: Spring Boot Kafka newbie question on serializing / deserializing
body: <p>I'm new to Kafka (using Spring Boot 2.2.4) and I'm seeing samples where the KafkaTemplate's are String, String to just send a string. I was looking at sending Json objects and I'm seeing 2 different approaches there... some folks are using String, Object and some are using String, TheActualModelClass.</p>
  
  <p>Is there pros/cons between the two? I'm kind of assuming the main diff is that the typed template would only be good for one model whereas the object could send any type to any topic? Anything beyond that?</p>