title: Service mesh and Async services
body: <p>I am planning to introduce K8s/Istio into my infra.
  Right now I have plenty of services which communicate with each other using RabbitMQ.</p>
  
  <p>Service mesh concept seems to assume all services should be synchronous.</p>
  
  <p>I'd like to keep at least some of my services async and take advantage of Mutual TLS Authentication which istio provides and also aggregated monitoring.</p>
  
  <p>Is there any tools/methods which can help me to streamline management of both Sync and Async services?</p>
  
  <p>Thanks,</p>