Milvus

Milvus 是一个为嵌入相似性搜索和 AI 应用构建的向量数据库。

兼容性

仅在 Node.js 上可用。

设置

1. 在您的计算机上使用 Docker 运行 Milvus 实例 文档

2. 安装 Milvus Node.js SDK。

   npm

   npm install -S @zilliz/milvus2-sdk-node

   Yarn

   yarn add @zilliz/milvus2-sdk-node

   pnpm

   pnpm add @zilliz/milvus2-sdk-node

3. 在运行代码之前设置 Milvus 的环境变量

   3.1 OpenAI

   export OPENAI_API_KEY=YOUR_OPENAI_API_KEY_HERE
   export MILVUS_URL=YOUR_MILVUS_URL_HERE # for example http://localhost:19530

   3.2 Azure OpenAI

   export AZURE_OPENAI_API_KEY=YOUR_AZURE_OPENAI_API_KEY_HERE
   export AZURE_OPENAI_API_INSTANCE_NAME=YOUR_AZURE_OPENAI_INSTANCE_NAME_HERE
   export AZURE_OPENAI_API_DEPLOYMENT_NAME=YOUR_AZURE_OPENAI_DEPLOYMENT_NAME_HERE
   export AZURE_OPENAI_API_COMPLETIONS_DEPLOYMENT_NAME=YOUR_AZURE_OPENAI_COMPLETIONS_DEPLOYMENT_NAME_HERE
   export AZURE_OPENAI_API_EMBEDDINGS_DEPLOYMENT_NAME=YOUR_AZURE_OPENAI_EMBEDDINGS_DEPLOYMENT_NAME_HERE
   export AZURE_OPENAI_API_VERSION=YOUR_AZURE_OPENAI_API_VERSION_HERE
   export AZURE_OPENAI_BASE_PATH=YOUR_AZURE_OPENAI_BASE_PATH_HERE
   export MILVUS_URL=YOUR_MILVUS_URL_HERE # for example http://localhost:19530

索引和查询文档

提示

请参阅此部分，了解有关安装集成包的通用说明。

npm

npm install @langchain/openai @langchain/core

Yarn

yarn add @langchain/openai @langchain/core

pnpm

pnpm add @langchain/openai @langchain/core

import { Milvus } from "langchain/vectorstores/milvus";
import { OpenAIEmbeddings } from "@langchain/openai";

// text sample from Godel, Escher, Bach
const vectorStore = await Milvus.fromTexts(
  [
    "Tortoise: Labyrinth? Labyrinth? Could it Are we in the notorious Little\
            Harmonic Labyrinth of the dreaded Majotaur?",
    "Achilles: Yiikes! What is that?",
    "Tortoise: They say-although I person never believed it myself-that an I\
            Majotaur has created a tiny labyrinth sits in a pit in the middle of\
            it, waiting innocent victims to get lost in its fears complexity.\
            Then, when they wander and dazed into the center, he laughs and\
            laughs at them-so hard, that he laughs them to death!",
    "Achilles: Oh, no!",
    "Tortoise: But it's only a myth. Courage, Achilles.",
  ],
  [{ id: 2 }, { id: 1 }, { id: 3 }, { id: 4 }, { id: 5 }],
  new OpenAIEmbeddings(),
  {
    collectionName: "goldel_escher_bach",
  }
);

// or alternatively from docs
const vectorStore = await Milvus.fromDocuments(docs, new OpenAIEmbeddings(), {
  collectionName: "goldel_escher_bach",
});

const response = await vectorStore.similaritySearch("scared", 2);

从现有集合查询文档

import { Milvus } from "langchain/vectorstores/milvus";
import { OpenAIEmbeddings } from "@langchain/openai";

const vectorStore = await Milvus.fromExistingCollection(
  new OpenAIEmbeddings(),
  {
    collectionName: "goldel_escher_bach",
  }
);

const response = await vectorStore.similaritySearch("scared", 2);

相关

• 向量数据库概念指南
• 向量数据库操作指南