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[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["이해하기 어려움","hardToUnderstand","thumb-down"],["잘못된 정보 또는 샘플 코드","incorrectInformationOrSampleCode","thumb-down"],["필요한 정보/샘플이 없음","missingTheInformationSamplesINeed","thumb-down"],["번역 문제","translationIssue","thumb-down"],["기타","otherDown","thumb-down"]],[],[],[],null,["# Update context cache expiration\n\nExtend the expiration date of a context cache so that the cache can continue to be used.\n\nCode sample\n-----------\n\n### C#\n\n\nBefore trying this sample, follow the C# setup instructions in the\n[Vertex AI quickstart using\nclient libraries](/vertex-ai/docs/start/client-libraries).\n\n\nFor more information, see the\n[Vertex AI C# API\nreference documentation](/dotnet/docs/reference/Google.Cloud.AIPlatform.V1/latest).\n\n\nTo authenticate to Vertex AI, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n using https://cloud.google.com/dotnet/docs/reference/Google.Cloud.AIPlatform.V1Beta1/latest/Google.Cloud.AIPlatform.V1Beta1.html;\n using https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.WellKnownTypes.html;\n using System;\n using System.Threading.Tasks;\n\n public class UpdateContextCache\n {\n public async Task\u003cTimestamp\u003e UpdateExpireTime(https://cloud.google.com/dotnet/docs/reference/Google.Cloud.AIPlatform.V1Beta1/latest/Google.Cloud.AIPlatform.V1Beta1.CachedContentName.html name)\n {\n var client = await new https://cloud.google.com/dotnet/docs/reference/Google.Cloud.AIPlatform.V1Beta1/latest/Google.Cloud.AIPlatform.V1Beta1.GenAiCacheServiceClientBuilder.html\n {\n Endpoint = \"us-central1-aiplatform.googleapis.com\"\n }.BuildAsync();\n\n var cachedContent = await client.GetCachedContentAsync(new https://cloud.google.com/dotnet/docs/reference/Google.Cloud.AIPlatform.V1Beta1/latest/Google.Cloud.AIPlatform.V1Beta1.GetCachedContentRequest.html\n {\n CachedContentName = name\n });\n Console.WriteLine($\"Original expire time: {cachedContent.ExpireTime}\");\n\n // Update the expiration time by 2 hours\n cachedContent.Ttl = https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.WellKnownTypes.Duration.html.https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.WellKnownTypes.Duration.html#Google_Protobuf_WellKnownTypes_Duration_FromTimeSpan_System_TimeSpan_(TimeSpan.FromHours(2));\n\n var updatedCachedContent = await client.UpdateCachedContentAsync(new https://cloud.google.com/dotnet/docs/reference/Google.Cloud.AIPlatform.V1Beta1/latest/Google.Cloud.AIPlatform.V1Beta1.UpdateCachedContentRequest.html\n {\n CachedContent = cachedContent\n });\n\n Console.WriteLine($\"Updated expire time: {updatedCachedContent.ExpireTime}\");\n\n return updatedCachedContent.ExpireTime;\n }\n }\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=generativeaionvertexai)."]]