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ModusDB is a high-performance, transactional database system. It's designed to be type-first, schema-agnostic, and portable. ModusDB provides object-oriented APIs that makes it simple to build new apps, paired with support for advanced use cases through the Dgraph Query Language (DQL). A dynamic schema allows for natural relations to be expressed in your data with performance that scales with your use case.

ModusDB is available as a Go package for running in-process, providing low-latency reads, writes, and vector searches. We’ve made trade-offs to prioritize speed and simplicity.

The modus framework is optimized for apps that require sub-second response times. ModusDB augments polyglot functions with simple to use data and vector storage. When paired together, you can build a complete AI semantic search or retrieval-augmented generation (RAG) feature with a single framework.

Quickstart

package main

import (
  "github.com/hypermodeinc/modusdb"
)

type User struct {
  Gid  uint64 `json:"gid,omitempty"`
  Id   string `json:"id,omitempty" db:"constraint=unique"`
  Name string `json:"name,omitempty"`
  Age  int    `json:"age,omitempty"`
}

func main() {
  db, err := New(NewDefaultConfig("/tmp/modusdb"))
  if err != nil {
    panic(err)
  }
  defer db.Close()

  gid, user, err := modusdb.Upsert(db, User{
    Id:   "123",
    Name: "A",
    Age:  10,
  })
  if err != nil {
    panic(err)
  }
  fmt.Println(user)

  _, queriedUser, err := modusdb.Get[User](db, gid)
  if err != nil {
    panic(err)
  }
  fmt.Println(queriedUser)

  _, _, err = modusdb.Delete[User](db, gid)
  if err != nil {
    panic(err)
  }
}

Open Source

The modus framework, including modusDB, is developed by Hypermode as an open-source project, integral but independent from Hypermode.

We welcome external contributions. See the CONTRIBUTING.md file if you would like to get involved.

Modus and its components are Copyright 2025 Hypermode Inc., and licensed under the terms of the Apache License, Version 2.0. See the LICENSE file for a complete copy of the license. If you have any questions about modus licensing, or need an alternate license or other arrangement, please contact us at [email protected].

Acknowledgements

ModusDB builds heavily upon packages from the open source projects of Dgraph (graph query processing and transaction management), Badger (data storage), and Ristretto (cache). We expect the architecture and implementations of modusDB and Dgraph to expand in differentiation over time as the projects optimize for different core use cases, while maintaining Dgraph Query Language (DQL) compatibility.