建立脈絡快取

建立脈絡快取，減少含有相同詞元數輸入內容的重複要求，進而降低成本。

程式碼範例

C#

在試用這個範例之前，請先按照「使用用戶端程式庫的 Vertex AI 快速入門導覽課程」中的 C# 設定說明操作。詳情請參閱 Vertex AI C# API 參考說明文件。

如要向 Vertex AI 進行驗證，請設定應用程式預設憑證。詳情請參閱「為本機開發環境設定驗證機制」。

using Google.Cloud.AIPlatform.V1Beta1;
using Google.Protobuf.WellKnownTypes;
using System;
using System.Threading.Tasks;

public class CreateContextCache
{
    public async Task<CachedContentName> Create(string projectId)
    {
        var client = await new GenAiCacheServiceClientBuilder
        {
            Endpoint = "us-central1-aiplatform.googleapis.com"
        }.BuildAsync();

        var request = new CreateCachedContentRequest
        {
            Parent = $"projects/{projectId}/locations/us-central1",
            CachedContent = new CachedContent
            {
                Model = $"projects/{projectId}/locations/us-central1/publishers/google/models/gemini-2.5-flash",
                SystemInstruction = new Content
                {
                    Parts =
                    {
                        new Part { Text = "You are an expert researcher. You always stick to the facts in the sources provided and"
                            + " never make up new facts. Now look at these research papers, and answer the following questions." }
                    }
                },
                Contents =
                {
                    new Content
                    {
                        Role = "USER",
                        Parts =
                        {
                            new Part { FileData = new() { MimeType = "application/pdf", FileUri = "gs://cloud-samples-data/generative-ai/pdf/2312.11805v3.pdf" } },
                            new Part { FileData = new() { MimeType = "application/pdf", FileUri = "gs://cloud-samples-data/generative-ai/pdf/2403.05530.pdf" } }
                        }
                    }
                },
                Ttl = Duration.FromTimeSpan(TimeSpan.FromMinutes(60))
            }
        };

        var cachedContent = await client.CreateCachedContentAsync(request);
        Console.WriteLine($"Created cache: {cachedContent.CachedContentName}");
        return cachedContent.CachedContentName;
    }
}

後續步驟

如要搜尋及篩選其他 Google Cloud 產品的程式碼範例，請參閱Google Cloud 範例瀏覽工具。