How is the cloudlet usage calculated?

A single cloudlet = 128 MB RAM and CPU power of 200MHz. The utilization of resources is charged on an hourly basis on the basis of two factors:

  • The peak usage of RAM over a particular hour
  • The average CPU usage over a particular hour

This means when calculating the usage of cloudlets, we take into account the largest amount of RAM or CPU used during a particular hour (note that we use only one of the two, either RAM or CPU, and not both combined).

Types of cloudlets

  • Reserved

    Reserved cloudlets are ones that are reserved for users in advance, with the help of a topology wizard. As the cloudlets are reserved or dedicated exclusively for specific users, they have to pay for all the reserved cloudlets, irrespective of how much resources are used. One of the key advantages of reserved cloudlets is they are highly cost effective.

  • Dynamic

    Dynamic cloudlets are added and removed automatically, depending on the actual resources used by various applications. These cloudlets are useful to deal with a sudden increase or decrease in demand, and thus eliminate the need of advance planning or special codes. In dynamic cloudlets, users pay on the basis of their usage.


Which type of cloudlets are recommended?

At PaaS Provider, we recommend our clients to go for a combination of reserved and dynamic cloudlets. This way, you not only get cloudlets that are dedicated for your application at cost-effective rates, but you also get the flexibility of scaling up resources whenever there’s a need.

If you opt for a combination of the two types of cloudlets, you will see a scaling limit (a limit that defines your reserved cloudlets. This limit will help you in keeping a tab on your cloudlet usage.