SB caching

[vermegi]

Service Bus connection caching: people who wait 10+ minutes lose the ability to send messages in Lab 5. Workaround (from a learner): Add the cache disability to the code. It works better this way. In PetClinicVisitRequestSender you add an import org.springframework.jms.connection.CachingConnectionFactory; and then : CachingConnectionFactory connectionFactory = (CachingConnectionFactory) jmsTemplate.getConnectionFactory(); connectionFactory.setCacheProducers(false); Workaround links:

• https://stackoverflow.com/questions/64917959/azure-service-bus-javax-jms-illegalstateexception-the-messageproducer-was-close
• https://stackoverflow.com/questions/59248234/azure-service-bus-amqp-idle-timeout-condition-amqplinkdetach-forced