using redis in mongodb

Question

I have a default Express app, and my routes index.js file looks like this:

var user = require('../models/user');

exports.index = function(req, res){
  res.render('index', { title: 'Express', object: obj });
};

Now, suppose in my app.js file the client object that is the redis client connected to my redis-server, and I would like to be able to use that client object in my user model, for example to avoid repeated login attempts. How can I be able to access that object in my user model? Here is the code for that model

var mongoose = require('mongoose');

var userSchema = mongoose.Schema({
  email:    { type: String, required: true, index: { unique: true } },
  password: { type: String, required: true },
  name:     { type: String, required: true }
});

var User = mongoose.model('User', userSchema);

exports.canLogin = function(mIn, pIn, next){
  User.findOne({
    email: mIn
  }, function(err, user){
    if(!err){
      if(user.password == pIn)
        next(true);
        else next(false);
    } else next(false);
  });
};

suppose that in my canLogin function I want to check for something in redis. How do I access the 'client' object from there? — john smith, Aug 29 '13 at 17:48
Where is the `client` object created? In a module, exported? `canLogin` is just JavaScript, so I don't follow what you're trying to do. This doesn't seem to have any connection to MongoDB. — WiredPrairie, Aug 29 '13 at 18:27

Josh C. · Answer 1 · 2013-09-05T19:04:06.710

If you want to store your client in the session, you can use connect-redis to setup session storage in express like so

var express = require('express');
var app = express();
var RedisStore = require('connect-redis')(express);

app.use(express.cookieParser());
app.use(express.session({
  store: new RedisStore({
    host: 'localhost',
    port: 6379,
    db: 2,
    pass: 'RedisPASS'
  }),
  secret: '1234567890QWERTY'
}));

Now, you can access the session like this req.session.WHATEVER

(And you can do the same thing with mongo.)

If you just want some redis storage available when processing the request, you can use node_redis directly. There are plenty of examples on github

using redis in mongodb

1 Answers1