PouchDB

danger

This adapter is still experimental and does not work with NextAuth.js 4 or newer. If you would like to help out upgrading it, please open a PR

This is the PouchDB Adapter for next-auth. This package can only be used in conjunction with the primary next-auth package. It is not a standalone package.

Depending on your architecture you can use PouchDB's http adapter to reach any database compliant with the CouchDB protocol (CouchDB, Cloudant, ...) or use any other PouchDB compatible adapter (leveldb, in-memory, ...)

Getting Started

Prerequisites: Your PouchDB instance MUST provide the pouchdb-find plugin since it is used internally by the adapter to build and manage indexes

1. Install next-auth and @next-auth/pouchdb-adapter

npm install next-auth @next-auth/pouchdb-adapter

2. Add this adapter to your pages/api/auth/[...nextauth].js next-auth configuration object

pages/api/auth/[...nextauth].js

import NextAuth from "next-auth"
import GoogleProvider from "next-auth/providers/google"
import { PouchDBAdapter } from "@next-auth/pouchdb-adapter"
import PouchDB from "pouchdb"

// Setup your PouchDB instance and database
PouchDB.plugin(require("pouchdb-adapter-leveldb")) // Any other adapter
  .plugin(require("pouchdb-find")) // Don't forget the `pouchdb-find` plugin

const pouchdb = new PouchDB("auth_db", { adapter: "leveldb" })

// For more information on each option (and a full list of options) go to
// https://next-auth.js.org/configuration/options
export default NextAuth({
  // https://next-auth.js.org/providers/overview
  providers: [
    GoogleProvider({
      clientId: process.env.GOOGLE_ID,
      clientSecret: process.env.GOOGLE_SECRET,
    }),
  ],
  adapter: PouchDBAdapter(pouchdb),
  // ...
})

Advanced

Memory-First Caching Strategy

If you need to boost your authentication layer performance, you may use PouchDB's powerful sync features and various adapters, to build a memory-first caching strategy.

Use an in-memory PouchDB as your main authentication database, and synchronize it with any other persisted PouchDB. You may do a one way, one-off replication at startup from the persisted PouchDB into the in-memory PouchDB, then two-way, continuous, retriable sync.

This will most likely not increase performance much in a serverless environment due to various reasons such as concurrency, function startup time increases, etc.

For more details, please see https://pouchdb.com/api.html#sync