Web Role Detailed

In this article we can summarize the points on Web Role deployed in previous article.

Virtual Machine Size

The virtual machine size provides the resource capacity of the virtual machine. The parameters varying with virtual machine size are:

  • CPU Speed
  • Memory (RAM)
  • Instance Storage (Hard Disk)
  • I/O Performance

The sizes for virtual machine are:

  • Extra Small
  • Small
  • Medium
  • Large
  • Extra Large

The cost of billing will be varying depending on the virtual machine size.

The ServiceDefinition.csdef file can be used to specify the VM size.

<?xml version=”1.0″ encoding=”utf-8″?>

<ServiceDefinition name=”WebRoleExample” xmlns=”http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceDefinition”>

<WebRole name=”WebRole1 vmsize=Small>

<Sites>

<Site name=”Web”>

<Bindings>

<Binding name=”Endpoint1″ endpointName=”Endpoint1″ />

</Bindings>

</Site>

</Sites>

<Endpoints>

<InputEndpoint name=”Endpoint1″ protocol=”http” port=”80″ />

</Endpoints>

<Imports>

<Import moduleName=”Diagnostics” />

</Imports>

</WebRole>

</ServiceDefinition>

Instance Count

The number of instances of the Web Role can be specified using the instance count option. The number of instances will be managed by a Load Balancer automatically by the cloud.

The ServiceConfiguration.cscfg file can be used to specify the instance count.

<?xml version=”1.0″ encoding=”utf-8″?>

<ServiceConfiguration serviceName=”WebRoleExample” xmlns=”http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration” osFamily=”1″ osVersion=”*”>

<Role name=”WebRole1″>

<Instances count=”1″ />

<ConfigurationSettings>

<Setting name=”Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString” value=”UseDevelopmentStorage=true” />

</ConfigurationSettings>

</Role>

</ServiceConfiguration>

Locating the files

From the solution explorer we can locate the files as shown below:

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