Highlighted features

Installation

npm i @orama/orama

<html>
  <body>
    <script type="module">
      import { create, insert, search } from 'https://cdn.jsdelivr.net/npm/@orama/orama@latest/+esm'
    </script>
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</html>

import { create, search, insert } from 'npm:@orama/orama'

Orama Features

Usage

import { create, insert, remove, search, searchVector } from '@orama/orama'

const db = create({
  schema: {
    name: 'string',
    description: 'string',
    price: 'number',
    embedding: 'vector[1536]', // Vector size must be expressed during schema initialization
    meta: {
      rating: 'number',
    },
  },
})

insert(db, {
  name: 'Noise cancelling headphones',
  description: 'Best noise cancelling headphones on the market',
  price: 99.99,
  embedding: [0.2432, 0.9431, 0.5322, 0.4234, ...],
  meta: {
    rating: 4.5
  }
})

const results = search(db, {
  term: 'Best headphones'
})

// {
//   elapsed: {
//     raw: 21492,
//     formatted: '21μs',
//   },
//   hits: [
//     {
//       id: '41013877-56',
//       score: 0.925085832971998432,
//       document: {
//         name: 'Noise cancelling headphones',
//         description: 'Best noise cancelling headphones on the market',
//         price: 99.99,
//         embedding: [0.2432, 0.9431, 0.5322, 0.4234, ...],
//         meta: {
//           rating: 4.5
//         }
//       }
//     }
//   ],
//   count: 1
// }

Vector and Hybrid Search Support

import { create, insertMultiple, search } from '@orama/orama'

const db = create({
  schema: {
    title: 'string',
    embedding: 'vector[5]', // we are using a 5-dimensional vector.
  },
});

insertMultiple(db, [
  { title: 'The Prestige', embedding: [0.938293, 0.284951, 0.348264, 0.948276, 0.56472] },
  { title: 'Barbie', embedding: [0.192839, 0.028471, 0.284738, 0.937463, 0.092827] },
  { title: 'Oppenheimer', embedding: [0.827391, 0.927381, 0.001982, 0.983821, 0.294841] },
])

const results = search(db, {
  // Search mode. Can be 'vector', 'hybrid', or 'fulltext'
  mode: 'vector',
  vector: {
    // The vector (text embedding) to use for search
    value: [0.938292, 0.284961, 0.248264, 0.748276, 0.26472],
    // The schema property where Orama should compare embeddings
    property: 'embedding',
  },
  // Minimum similarity to determine a match. Defaults to `0.8`
  similarity: 0.85,
  // Defaults to `false`. Setting to 'true' will return the embeddings in the response (which can be very large).
  includeVectors: true,
})

import { create } from '@orama/orama'
import { pluginEmbeddings } from '@orama/plugin-embeddings'
import '@tensorflow/tfjs-node' // Or any other appropriate TensorflowJS backend, like @tensorflow/tfjs-backend-webgl

const plugin = await pluginEmbeddings({
  embeddings: {
    // Schema property used to store generated embeddings
    defaultProperty: 'embeddings',
    onInsert: {
      // Generate embeddings at insert-time
      generate: true,
      // properties to use for generating embeddings at insert time.
      // Will be concatenated to generate a unique embedding.
      properties: ['description'],
      verbose: true,
    }
  }
})

const db = create({
  schema: {
    description: 'string',
    // Orama generates 512-dimensions vectors.
    // When using @orama/plugin-embeddings, set the property where you want to store embeddings as `vector[512]`.
    embeddings: 'vector[512]'
  },
  plugins: [plugin]
})

// Orama will generate and store embeddings at insert-time!
await insert(db, { description: 'Classroom Headphones Bulk 5 Pack, Student On Ear Color Varieties' })
await insert(db, { description: 'Kids Wired Headphones for School Students K-12' })
await insert(db, { description: 'Kids Headphones Bulk 5-Pack for K-12 School' })
await insert(db, { description: 'Bose QuietComfort Bluetooth Headphones' })

// Orama will also generate and use embeddings at search time when search mode is set to "vector" or "hybrid"!
const searchResults = await search(db, {
  term: 'Headphones for 12th grade students',
  mode: 'vector',
  similarity: 0.75,
})

RAG and Chat Experiences with Orama

import { create, insert } from '@orama/orama'
import { pluginSecureProxy } from '@orama/plugin-secure-proxy'

const secureProxy = await pluginSecureProxy({
  apiKey: 'my-api-key',
  defaultProperty: 'embeddings',
  models: {
    // The chat model to use to generate the chat answer
    chat: 'openai/gpt-4o-mini'
  }
})

const db = create({
  schema: {
    name: 'string'
  },
  plugins: [secureProxy]
})

insert(db, { name: 'John Doe' })
insert(db, { name: 'Jane Doe' })

const session = new AnswerSession(db, {
  // Customize the prompt for the system
  systemPrompt: 'You will get a name as context, please provide a greeting message',
  events: {
    // Log all state changes. Useful to reactively update a UI on a new message chunk, sources, etc.
    onStateChange: console.log,
  }
})

const response = await session.ask({
  term: 'john'
})

console.log(response) // Hello, John Doe! How are you doing?

Official Docs

Official Orama Plugins

License