title: JAXB creating context and marshallers cost
body: <p>The question is a bit theoretical, what is the cost of creating JAXB context, marshaller and unmarshaller?</p>
  
  <p>I've found that my code could benefit from keeping the same JAXB context and possibly the same marshaller for all marshaling operations rather than creating context and marshaller on each marshaling.</p>
  
  <p>So what is the cost of creating JAXB context and marshaller/unmarshaller? Is it okay to create context+marshaller for each marshaling operation or it's better to avoid it?</p>