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copied!<p>it sounds very exotic, that after <code>fs.mkdir</code> your session erased. (I found your other SO question)</p> <p>But back to the question, here's a little code snippet how you can use sessions (redis).</p> <pre><code>var express = require('express') , fs = require('fs') , http = require('http') , RedisStore = require('connect-redis')(express) , sessionStore = new RedisStore() , app = express() ; app.configure(function(){ app.set('port', 3000); app.use(express.bodyParser()); app.use(express.methodOverride()); app.use(express.cookieParser('secret')); app.use(express.session({ store: sessionStore })); app.use(express.static(__dirname + '/public')); app.use(express.errorHandler({ dumpExceptions: true, showStack: true })); }); app.get( '/', function(req, res){ res.setHeader("Content-Type", "text/html"); console.log( req.session ); console.log( '------------------------' ); res.end( 'root' ); }); app.get( '/dir/:id', function(req, res){ console.log( req.session ); console.log( '------------------------' ); fs.mkdir( req.params.id ); if ( req.session.dirs === undefined ) req.session.dirs = []; req.session.dirs.push( req.params.id ); console.log( req.session ); console.log( '------------------------' ); res.setHeader("Content-Type", "text/html"); res.end( 'dir' ); }); server = http.createServer(app).listen(3000); </code></pre> <p>you should read the docs of <a href="http://expressjs.com" rel="nofollow">express</a>, and browse the <a href="https://github.com/visionmedia/express/tree/master/examples/session" rel="nofollow">examples</a> of express</p>

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