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    0.4.1 • Public • Published


    A PouchDB session store for express.js.

    Build Status


    • Compatible with PouchDB and CouchDB (or any database that uses the CouchDB API).
    • Realtime session data synchronization between processes (if PouchDB/CouchDB server is used)
    • Default in-memory PouchDB instance.
    • Custom PouchDB instance.
    • Scavenge and purge invalid/expired sessions.


    npm install session-pouchdb-store --save

    This will install session-pouchdb-store and add it to your application's package.json file.

    Important Notes

    If you use a remote PouchDB server, make sure the database exists prior to start your application/s

    Basic Usage

    Use with your express session middleware, like this:

        express = require("express"),
        session = require("express-session"),
        PouchSession = require("session-pouchdb-store");
    let app = express();
      secret: 'thisismysecret',
      resave: false,
      saveUninitialized: true,
        store : new PouchSession()
    app.listen(3000, () => {
        console.log(`Server ${} started on port 3000`);

    By default, PouchSession creates an in-memory database for testing purposes. You can pass your own instance or connect to a remote PouchDB/CouchDB server:

    Remote PouchDB server

      secret: 'thisismysecret',
      resave: false,
      saveUninitialized: true,
        store : new PouchSession('http://pouchdbserver:port/sessions')

    Custom instance

    const PouchDB = require('pouchdb');
    let db = new PouchDB("sessions",{adapter:'leveldb'});
      secret: 'thisismysecret',
      resave: false,
      saveUninitialized: true,
        store : new PouchSession(db)

    Realtime synchronization

    In order to synchronize session data, the current version of the store requires a remote PouchDB server, so multiple express processes can connect to the same database and perform synchronization.


    new PouchSession(pouchInstance, options)

    Creates a new store instance. The first argument can be one of the following:

    • undefined If no arguments is passed, a default in-memory instance is created.
    • PouchDB instance The PouchDB instance that will be used by the store.
    • URL string A URL string to a remote PouchDB/CouchDB server.
    • string A simple string is used as a file path for leveldb storage

    Options is an object that allows overriding some store behaviours:

    • maxIdle Max time in ms a session can go idle. When this time exceeds, the session is remove from the store cache. Note that a session can be idle and still be a valid session; session expiration is defined by the express-session module. The purpose of this parameter is to release from memory sessions that are not being used.
    • scavenge Interval time in ms that the store will search and release maxIdle sessions.
    • purge Interval time in ms that the the store will remove expired sessions from the database.

    Default options are as follows:

    Here is a list of all available options:

    var options = {
        // Max idle time in ms
        maxIdle : 5*60*1000,
        // Scavenge period in ms
        scavenge : 1000,
        // Database purge period in ms
        purge : 5*60*1000


    npm i session-pouchdb-store

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