AWS SDK Version 3 for .NET
API Reference

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A complex type that describes the default cache behavior if you do not specify a CacheBehavior element or if files don't match any of the values of PathPattern in CacheBehavior elements. You must create exactly one default cache behavior.

Inheritance Hierarchy

System.Object
  Amazon.CloudFront.Model.DefaultCacheBehavior

Namespace: Amazon.CloudFront.Model
Assembly: AWSSDK.CloudFront.dll
Version: 3.x.y.z

Syntax

C#
public class DefaultCacheBehavior

The DefaultCacheBehavior type exposes the following members

Constructors

NameDescription
Public Method DefaultCacheBehavior()

Properties

NameTypeDescription
Public Property AllowedMethods Amazon.CloudFront.Model.AllowedMethods

Gets and sets the property AllowedMethods.

Public Property Compress System.Boolean

Gets and sets the property Compress.

Whether you want CloudFront to automatically compress certain files for this cache behavior. If so, specify true; if not, specify false. For more information, see Serving Compressed Files in the Amazon CloudFront Developer Guide.

Public Property DefaultTTL System.Int64

Gets and sets the property DefaultTTL.

The default amount of time that you want objects to stay in CloudFront caches before CloudFront forwards another request to your origin to determine whether the object has been updated. The value that you specify applies only when your origin does not add HTTP headers such as Cache-Control max-age, Cache-Control s-maxage, and Expires to objects. For more information, see Specifying How Long Objects and Errors Stay in a CloudFront Edge Cache (Expiration) in the Amazon CloudFront Developer Guide.

Public Property ForwardedValues Amazon.CloudFront.Model.ForwardedValues

Gets and sets the property ForwardedValues.

A complex type that specifies how CloudFront handles query strings and cookies.

Public Property LambdaFunctionAssociations Amazon.CloudFront.Model.LambdaFunctionAssociations

Gets and sets the property LambdaFunctionAssociations.

A complex type that contains zero or more Lambda function associations for a cache behavior.

Public Property MaxTTL System.Int64

Gets and sets the property MaxTTL.

Public Property MinTTL System.Int64

Gets and sets the property MinTTL.

The minimum amount of time that you want objects to stay in CloudFront caches before CloudFront forwards another request to your origin to determine whether the object has been updated. For more information, see Specifying How Long Objects and Errors Stay in a CloudFront Edge Cache (Expiration) in the Amazon Amazon CloudFront Developer Guide.

You must specify 0 for MinTTL if you configure CloudFront to forward all headers to your origin (under Headers, if you specify 1 for Quantity and * for Name).

Public Property SmoothStreaming System.Boolean

Gets and sets the property SmoothStreaming.

Indicates whether you want to distribute media files in the Microsoft Smooth Streaming format using the origin that is associated with this cache behavior. If so, specify true; if not, specify false. If you specify true for SmoothStreaming, you can still distribute other content using this cache behavior if the content matches the value of PathPattern.

Public Property TargetOriginId System.String

Gets and sets the property TargetOriginId.

The value of ID for the origin that you want CloudFront to route requests to when a request matches the path pattern either for a cache behavior or for the default cache behavior.

Public Property TrustedSigners Amazon.CloudFront.Model.TrustedSigners

Gets and sets the property TrustedSigners.

A complex type that specifies the AWS accounts, if any, that you want to allow to create signed URLs for private content.

If you want to require signed URLs in requests for objects in the target origin that match the PathPattern for this cache behavior, specify true for Enabled, and specify the applicable values for Quantity and Items. For more information, see Serving Private Content through CloudFront in the Amazon Amazon CloudFront Developer Guide.

If you don't want to require signed URLs in requests for objects that match PathPattern, specify false for Enabled and 0 for Quantity. Omit Items.

To add, change, or remove one or more trusted signers, change Enabled to true (if it's currently false), change Quantity as applicable, and specify all of the trusted signers that you want to include in the updated distribution.

Public Property ViewerProtocolPolicy Amazon.CloudFront.ViewerProtocolPolicy

Gets and sets the property ViewerProtocolPolicy.

The protocol that viewers can use to access the files in the origin specified by TargetOriginId when a request matches the path pattern in PathPattern. You can specify the following options:

  • allow-all: Viewers can use HTTP or HTTPS.

  • redirect-to-https: If a viewer submits an HTTP request, CloudFront returns an HTTP status code of 301 (Moved Permanently) to the viewer along with the HTTPS URL. The viewer then resubmits the request using the new URL.

  • https-only: If a viewer sends an HTTP request, CloudFront returns an HTTP status code of 403 (Forbidden).

For more information about requiring the HTTPS protocol, see Using an HTTPS Connection to Access Your Objects in the Amazon CloudFront Developer Guide.

The only way to guarantee that viewers retrieve an object that was fetched from the origin using HTTPS is never to use any other protocol to fetch the object. If you have recently changed from HTTP to HTTPS, we recommend that you clear your objects' cache because cached objects are protocol agnostic. That means that an edge location will return an object from the cache regardless of whether the current request protocol matches the protocol used previously. For more information, see Specifying How Long Objects and Errors Stay in a CloudFront Edge Cache (Expiration) in the Amazon CloudFront Developer Guide.

Version Information

.NET Standard:
Supported in: 1.3

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms