Azure Cosmos DB NoSQL 语义集成

import {
  AzureCosmosDBNoSQLConfig,
  AzureCosmosDBNoSQLSemanticCache,
} from "@langchain/azure-cosmosdb";
import { ChatOpenAI, OpenAIEmbeddings } from "@langchain/openai";

const embeddings = new OpenAIEmbeddings();
const config: AzureCosmosDBNoSQLConfig = {
  databaseName: "<DATABASE_NAME>",
  containerName: "<CONTAINER_NAME>",
  // 使用端点通过托管身份初始化客户端
  connectionString: "<CONNECTION_STRING>",
};

/**
 * 设置基于向量距离返回缓存结果的阈值相似度分数。
 * 仅当相似度分数达到或超过此阈值时才返回缓存输出；
 * 否则，将生成新结果。默认值为 0.6，可通过构造函数调整
 * 以适应各种距离函数和用例。
 * (参见：https://aka.ms/CosmosVectorSearch)。
 */

const similarityScoreThreshold = 0.5;
const cache = new AzureCosmosDBNoSQLSemanticCache(
  embeddings,
  config,
  similarityScoreThreshold
);

const model = new ChatOpenAI({ model: "gpt-5.4-mini", cache });

// 调用模型执行操作
const response1 = await model.invoke("Do something random!");
console.log(response1);
/*
  AIMessage {
    content: "Sure! I'll generate a random number for you: 37",
    additional_kwargs: {}
  }
*/

const response2 = await model.invoke("Do something random!");
console.log(response2);
/*
  AIMessage {
    content: "Sure! I'll generate a random number for you: 37",
    additional_kwargs: {}
  }
*/