Load balancing with sticky sessions (source IP distribution mode for load balancing) in Cloud Services
When a load-balanced set changes (removing or adding an instance), the distribution of client requests is recomputed. Cannot depend on new connections from existing clients ending up at the same server. Whenever a new vm is added to the pool make it ready to accept only requests from new clients rather than having requests from existing clients end up on the different server. Make the load balancer to route the same client to the same application server while scaling up/down
Thank you for the feedback. What you’re suggesting is not possible in today’s platform and cannot be implemented at this time. Longer term, we may make enhancements to make this possible and I appreciate this feedback for planning purposes. I would like to encourage you to take a look a the other load balancing options in Azure, which include Application Gateway as a fully managed product or any of the 3rd party offers.