ServiceThrottlingBehavior Class
Configures run-time throughput settings that enable you to tune service performance.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
The ServiceThrottlingBehavior type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | ServiceThrottlingBehavior | Initializes a new instance of the ServiceThrottlingBehavior class. |
| Name | Description | |
|---|---|---|
![]() | MaxConcurrentCalls | Gets or sets a value that specifies the maximum number of messages actively processing across a ServiceHost. |
![]() | MaxConcurrentInstances | Gets or sets a value that specifies the maximum number of InstanceContext objects in the service that can execute at one time. |
![]() | MaxConcurrentSessions | Gets or sets a value that specifies the maximum number of sessions a ServiceHost object can accept at one time. |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | IServiceBehavior::AddBindingParameters | Configures the bindings to support the service behavior. |
![]() ![]() | IServiceBehavior::ApplyDispatchBehavior | Configures the service to support the service behavior. |
![]() ![]() | IServiceBehavior::Validate | Validates that the service and host can support the service behavior. |
Use the ServiceThrottlingBehavior class to control various throughput settings that help prevent your application from running out of memory.
The MaxConcurrentCalls property limits the number of messages that currently process across a ServiceHost.
The MaxConcurrentInstances property limits the number of InstanceContext objects that execute at one time across a ServiceHost.
The MaxConcurrentSessions property limits the number of sessions a ServiceHost object can accept.
Because run-time load balancing requires experience running the application, using the ServiceThrottlingBehavior through an application configuration file is the most common method of modifying execution to maximize service performance.
Note |
|---|
A trace is written every time the value of these properties is reached. The first trace is written as a warning. |
You can also set the values of this attribute by using the <serviceThrottling> element in an application configuration file.
The following code example shows the use of ServiceThrottlingBehavior from an application configuration file that sets the MaxConcurrentSessions, MaxConcurrentCalls, and MaxConcurrentInstances properties to 1 as an example. Real-world experience determines what the optimal settings are for any particular application.
<configuration>
<appSettings>
<!-- use appSetting to configure base address provided by host -->
<add key="baseAddress" value="http://localhost:8080/ServiceMetadata" />
</appSettings>
<system.serviceModel>
<services>
<service
name="Microsoft.WCF.Documentation.SampleService"
behaviorConfiguration="Throttled" >
<host>
<baseAddresses>
<add baseAddress="http://localhost:8080/SampleService"/>
</baseAddresses>
</host>
<endpoint
address=""
binding="wsHttpBinding"
contract="Microsoft.WCF.Documentation.ISampleService"
/>
<endpoint
address="mex"
binding="mexHttpBinding"
contract="IMetadataExchange"
/>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="Throttled">
<serviceThrottling
maxConcurrentCalls="1"
maxConcurrentSessions="1"
maxConcurrentInstances="1"
/>
<serviceMetadata
httpGetEnabled="true"
httpGetUrl=""
/>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
</configuration>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
