how to scale microservice (service fabric) instance when queue length increass
[Update] Microsoft just released the new Service Fabric SDK (1.5.175), with support for Azure Scale Sets. Ref: https://blogs.msdn.microsoft.com/azureservicefabric/2016/02/23/service-fabric-sdk-v1-5-175-and-the-adoption-of-virtual-machine-scale-sets/
At this time service fabric does not support autoscale, it will in the near future:
service-fabric-cluster-scale-up-down
Auto-scale Service Fabric clusters
At this time, Service Fabric clusters do not support auto-scaling. In the near future, clusters will be built on top of virtual machine scale sets, at which time auto-scaling will become possible and will behave similarly to the auto-scale behavior available in cloud services.