tch-nedb-session

A session store for express.js. Data is stored using NeDB on file system.

Installation

Add to your application via npm:

npm install tch-nedb-session --save

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

Important Notes

The package was developed and tested using Express v4 with Node v8 and Node v10.

While using NeDB I found out that in my apps TTL index on collections does not work. Therefore I decided to develop this session store and implement option to use interval instead. If you have issue with TTL index on sessions not working for you too, then use interval expirationType. If TTL index works in your app, you can still use it with this session store too, it is set as default.

How to Use

Use as Express middleware:

const express = require ('express');
const session = require ('express-session');
const nedbStorage = require ('tch-nedb-session') (session);

let app = express ();

let expiration = 24 * 60 * 60 * 1000;
let sessionStore = new nedbStorage ({
	filename: 'path_to_sessions.db',
	expiration: expiration,
	expirationType: 'interval',
	autoCompactInterval: 15 * 60 * 1000,
	expirationInterval: 24 * 60 * 60 * 1000
});

app.use (session ({
	secret: 'your_secret',
	cookie: {
		maxAge: expiration
	},
	resave: false,
	saveUninitialized: false,
	store: sessionStore
}));

Options

List of default options:

let defaults = {
	// NeDB collection file location
	filename: 'var/nedb/sessions.db',
	// How to expire expired session, ttl uses NeDB index, interval should be used if ttl does not work
	expirationType: 'ttl', // ttl | interval
	// How long should the session live, milliseconds
	expiration: 24 * 60 * 60 * 1000,
	// How often should NeDB compact the collection, milliseconds
	autoCompactInterval: 15 * 60 * 1000,
	// If expirationType is interval, the how often it should run, milliseconds
	expirationInterval: 24 * 60 * 60 * 1000,
	// Optional function to run on load success of the collection
	onLoad: undefined
};