Package org.cloudsimplus.autoscaling

Provides classes to enable horizontal and vertical scaling of VMs in order to, respectively, adapt resource requirements to current workload and to balance load across different VMs.

These scaling mechanisms define a Predicate that define the condition to fire the scaling mechanism. The DatacenterBroker that the VM belongs to is accountable to evaluate the predicate and then request the scaling mechanism to act.

Author:

Manoel Campos da Silva Filho

Interface Summary

Interface	Description
HorizontalVmScaling	A Vm Horizontal Scaling mechanism used by a DatacenterBroker to dynamically create VMs according to the arrival of Cloudlets, in order to enable load balancing.
VerticalVmScaling	A Vm Vertical Scaling mechanism used by a DatacenterBroker to request the dynamic scale of VM resources up or down, according to the current resource usage.
VmScaling	An interface to allow implementing horizontal and vertical scaling of Vms.

Class Summary

Class	Description
HorizontalVmScalingSimple	A HorizontalVmScaling implementation that allows defining the condition to identify an overloaded VM, based on any desired criteria, such as current RAM, CPU and/or Bandwidth utilization.
VerticalVmScalingSimple	A VerticalVmScaling implementation which allows a DatacenterBroker to perform on demand up or down scaling for some Vm resource, such as Ram, Pe or Bandwidth.
VmScalingAbstract	A base class for implementing HorizontalVmScaling and VerticalVmScaling.