2017/03/02 - Nodejs -> Express-generator, Express , MogoDB , Session , and Jade

Express-generator

Express-generator can build a web project quickly.

$npm install express-generator

Then we can use express to build a project.

$express Note-taking-system
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Express 1

Express is a minimal and flexible Node.js web application framework that provides a robust set of features to develop web and mobile applications. It facilitates the rapid development of Node based Web applications.

Features:

  1. Allows to set up middlewares to respond to HTTP Requests.

  2. Defines a routing table which is used to perform different actions based on HTTP Method and URL.

  3. Allows to dynamically render HTML Pages based on passing arguments to templates.

MongoDB

NoSQL database.

Store data in JSON format.

In Node.js, we need mongoose module to access MongoDB.

Session 2

Two type of session : (Database) Session and Cookie-based Session.

Database Session :

  • Store their data server side.

  • One of your web servers handles the first request, other web servers in your cluster will not have the stored information.

  • Data doesn’t have to travel from client to server on each request (clients just need to send an ID and the data is loaded from the local file).

  • Can be any size.

Cookie-based Session :

  • Store their data on the client/user end

  • Work smoothly when you have a cluster of web servers.

  • Cookies can be set to a long lifespan, which means that data stored in a cookie can be stored for months if not years (Users can clear cookies though).

  • Browsers typically limit cookies to a maximum size of around 4KB per domain.

Jade 3

Jade is an elegant templating engine, primarily used for server-side templating in Nodejs. In plain words, Jade gives you a powerful new way to write markup, with a number of advantages over plain HTML.

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Summary

I use these module in Nodejs to build the Note-taking system project. I try to use express-generator module because I want to learn about the concept of MVC(Model-View-Controller). MVC separates every module clearly , this may help me to maintain this system easily and efficiently in the future.