A Redis backed Express-session wrapper for sharing the session store under the same root domain between different servers
const app = express();
app.use(commonSession({
secret: 'secret_to_sign_session_id',
saveUninitialized: true,
ttl: '3600', // second
url: 'redis://redis_url:6379/0',
prefix: 'session_store_prefix',
domain: 'root-domain.io',
}));All servers set with the same option will share the same session store.