@hellomouse/session-pouchdb-store
v0.3.3
Published
PouchDB express session store. Can do realtime session data synchronization via PouchDB server
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session-pouchdb-store
A PouchDB session store for express.js.
Features
- 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.
Installation
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:
const
express = require("express"),
session = require("express-session"),
PouchSession = require("session-pouchdb-store");
let app = express();
app.use(session({
secret: 'thisismysecret',
resave: false,
saveUninitialized: true,
store : new PouchSession()
}));
app.listen(3000, () => {
console.log(`Server ${process.pid} 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
app.use(session({
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'});
app.use(session({
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.
API
new PouchSession(pouchInstance, options)
Creates a new store instance. The first argument can be one of the following:
- null 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.
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
};