public sealed class WeightedBackendService : IMessage<WeightedBackendService>, IEquatable<WeightedBackendService>, IDeepCloneable<WeightedBackendService>, IBufferMessage, IMessage
Reference documentation and code samples for the Compute Engine v1 API class WeightedBackendService.
In contrast to a single BackendService in HttpRouteAction to which all matching traffic is directed to, WeightedBackendService allows traffic to be split across multiple backend services. The volume of traffic for each backend service is proportional to the weight specified in each WeightedBackendService
The full or partial URL to the default BackendService resource. Before forwarding the request to backendService, the load balancer applies any relevant headerActions specified as part of this backendServiceWeight.
public HttpHeaderAction HeaderAction { get; set; }
Specifies changes to request and response headers that need to take effect for the selected backendService. headerAction specified here take effect before headerAction in the enclosing HttpRouteRule, PathMatcher and UrlMap. headerAction is not supported for load balancers that have their loadBalancingScheme set to EXTERNAL. Not supported when the URL map is bound to a target gRPC proxy that has validateForProxyless field set to true.
Specifies the fraction of traffic sent to a backend service, computed as weight / (sum of all weightedBackendService weights in routeAction) . The selection of a backend service is determined only for new traffic. Once a user's request has been directed to a backend service, subsequent requests are sent to the same backend service as determined by the backend service's session affinity policy. Don't configure session affinity if you're using weighted traffic splitting. If you do, the weighted traffic splitting configuration takes precedence. The value must be from 0 to 1000.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the \u003ccode\u003eWeightedBackendService\u003c/code\u003e class within the Google Cloud Compute Engine v1 API for .NET.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eWeightedBackendService\u003c/code\u003e allows the splitting of traffic across multiple backend services, where the proportion of traffic directed to each service is determined by its assigned weight.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of \u003ccode\u003eWeightedBackendService\u003c/code\u003e available is 3.6.0, and there are many versions, with options ranging from versions 1.0.0 to 3.6.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eWeightedBackendService\u003c/code\u003e class includes properties like \u003ccode\u003eBackendService\u003c/code\u003e, \u003ccode\u003eHeaderAction\u003c/code\u003e, and \u003ccode\u003eWeight\u003c/code\u003e, allowing configuration of header actions and traffic distribution.\u003c/p\u003e\n"],["\u003cp\u003eThis class is used within \u003ccode\u003eHttpRouteAction\u003c/code\u003e and is part of the \u003ccode\u003eGoogle.Cloud.Compute.V1\u003c/code\u003e namespace, located in the \u003ccode\u003eGoogle.Cloud.Compute.V1.dll\u003c/code\u003e assembly.\u003c/p\u003e\n"]]],[],null,["# Compute Engine v1 API - Class WeightedBackendService (3.13.0)\n\nVersion latestkeyboard_arrow_down\n\n- [3.13.0 (latest)](/dotnet/docs/reference/Google.Cloud.Compute.V1/latest/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.12.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.12.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.11.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.11.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.10.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.10.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.9.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.9.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.8.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.8.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.7.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.7.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.6.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.6.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.5.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.5.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.4.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.4.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.3.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.3.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.2.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.2.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.1.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.1.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [3.0.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/3.0.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.17.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.17.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.16.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.16.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.15.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.15.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.14.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.14.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.13.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.13.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.12.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.12.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.11.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.11.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.10.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.10.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.9.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.9.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.8.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.8.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.7.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.7.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.6.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.6.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.5.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.5.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.4.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.4.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.3.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.3.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.2.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.2.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.1.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.1.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [2.0.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/2.0.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [1.4.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/1.4.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [1.3.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/1.3.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [1.2.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/1.2.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [1.1.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/1.1.0/Google.Cloud.Compute.V1.WeightedBackendService)\n- [1.0.0](/dotnet/docs/reference/Google.Cloud.Compute.V1/1.0.0/Google.Cloud.Compute.V1.WeightedBackendService) \n\n public sealed class WeightedBackendService : IMessage\u003cWeightedBackendService\u003e, IEquatable\u003cWeightedBackendService\u003e, IDeepCloneable\u003cWeightedBackendService\u003e, IBufferMessage, IMessage\n\nReference documentation and code samples for the Compute Engine v1 API class WeightedBackendService.\n\nIn contrast to a single BackendService in HttpRouteAction to which all matching traffic is directed to, WeightedBackendService allows traffic to be split across multiple backend services. The volume of traffic for each backend service is proportional to the weight specified in each WeightedBackendService \n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e WeightedBackendService \n\nImplements\n----------\n\n[IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1.html)[WeightedBackendService](/dotnet/docs/reference/Google.Cloud.Compute.V1/latest/Google.Cloud.Compute.V1.WeightedBackendService), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[WeightedBackendService](/dotnet/docs/reference/Google.Cloud.Compute.V1/latest/Google.Cloud.Compute.V1.WeightedBackendService), [IDeepCloneable](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1.html)[WeightedBackendService](/dotnet/docs/reference/Google.Cloud.Compute.V1/latest/Google.Cloud.Compute.V1.WeightedBackendService), [IBufferMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage.html), [IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage.html) \n\nInherited Members\n-----------------\n\n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\nNamespace\n---------\n\n[Google.Cloud.Compute.V1](/dotnet/docs/reference/Google.Cloud.Compute.V1/latest/Google.Cloud.Compute.V1)\n\nAssembly\n--------\n\nGoogle.Cloud.Compute.V1.dll\n\nConstructors\n------------\n\n### WeightedBackendService()\n\n public WeightedBackendService()\n\n### WeightedBackendService(WeightedBackendService)\n\n public WeightedBackendService(WeightedBackendService other)\n\nProperties\n----------\n\n### BackendService\n\n public string BackendService { get; set; }\n\nThe full or partial URL to the default BackendService resource. Before forwarding the request to backendService, the load balancer applies any relevant headerActions specified as part of this backendServiceWeight.\n\n### HasBackendService\n\n public bool HasBackendService { get; }\n\nGets whether the \"backend_service\" field is set\n\n### HasWeight\n\n public bool HasWeight { get; }\n\nGets whether the \"weight\" field is set\n\n### HeaderAction\n\n public HttpHeaderAction HeaderAction { get; set; }\n\nSpecifies changes to request and response headers that need to take effect for the selected backendService. headerAction specified here take effect before headerAction in the enclosing HttpRouteRule, PathMatcher and UrlMap. headerAction is not supported for load balancers that have their loadBalancingScheme set to EXTERNAL. Not supported when the URL map is bound to a target gRPC proxy that has validateForProxyless field set to true.\n\n### Weight\n\n public uint Weight { get; set; }\n\nSpecifies the fraction of traffic sent to a backend service, computed as weight / (sum of all weightedBackendService weights in routeAction) . The selection of a backend service is determined only for new traffic. Once a user's request has been directed to a backend service, subsequent requests are sent to the same backend service as determined by the backend service's session affinity policy. Don't configure session affinity if you're using weighted traffic splitting. If you do, the weighted traffic splitting configuration takes precedence. The value must be from 0 to 1000."]]
