A practical intro to web development with mongo db and nodejs when, why and how

ByJorge Garifuna

Professional Web [email protected]

213-915-4402

JGari.com/resume

Twitter: @jgarifuna

JGari.com/resumeSMS your name & email to: 213-985-4413

SMS your Name and Email to:

213-985-4413


1. A Database that stores data (documents)2. A NoSQL Database

1. NoSQL = Not only SQL3. Uses JSON for interaction

1. JSON = JavaScript Object Notation4. Managed by 10gen company


1. Scalable2. High performance3. Open source4. Written in C++5. Humongous


1. Document-Oriented Storage2. Full Index Support3. Replication & High Availability: Mirror across

LAN/WAN4. Auto-Sharding: Scale horizontally5. Map/Reduce: aggregation & data processing6. GridFS: Stire files of any size


1. A Relational Database2. Ideal for every scenario


1. Not a Relational Database (RDBMS)2. Not ideal for every scenario


id firstName

lastName

age

1 Jorge Garifuna 85

2 Jimmy Smith 30

id: 1firstName: JorgelastName: Garifunaage: 85

id: 2firstName: JimmylastName: Smithage: 30

id: 3firstName: AlanlastName: Jonesage: 25city: Los Angelesstate: CA

Relational Database Table/Records MongoDB Collection/Documents


1. I dig alpha products2. Beta products are my cut of tea3. I only consider stable products


Credit: Sanjeev Mishra


1. When you need flexibility in your data

2. When you want to easily scale3. When your dataset does not

have zillions of joins


Source: http://www.mongodb.org/display/DOCS/SQL+to+Mongo+Mapping+Chart


1. Download from 1. http://www.mongodb.org/downloads

2. Unzip package3. Run the following from terminal

1. sudo mkdir -p /data/db2. sudo chown `id -u` /data/db

4. Add to path1. Mac example: export PATH=/Users/jgarifuna/jg/net/Dev/db/mongodb-osx-x86_64-2.2.1-rc0/bin:$PATH

2. Linux example: PATH=/home/jgarifuna/mongo-linux-2.2.1/bin:$PATH


1. If added to path in command line type

1. mongod2. If not on path

1. Access the bin folder on mongo folder2. Type: ./mongod


1. If added to path in command line type

1. mongo2. If not on path

1. Access the bin folder on mongo folder2. Type: ./mongo


1. Databases are created automatically

2. Tables are created automatically3. Primary key is created

automatically


Source: http://www.mongodb.org/display/DOCS/SQL+to+Mongo+Mapping+Chart


Source: http://www.mongodb.org/display/DOCS/Replica+Sets


Source: http://www.mongodb.org/display/DOCS/Replica+Sets+-+Basics

On each mongodb instance start service with: mongod --rest --replSet myset



Connect to primary server: mongo --host PRIMARY_IP_OR_NAME

Initialize replica set rs.initiate()

Add secondary node to replica set rs.add(‘FIRST_SERVER_NAME_OR_IP’)

Add arbiter node to replica set rs.addArb(‘ARB_SERVER_NAME_OR_IP’)



Connect to primary server: mongo --host PRIMARY_IP_OR_NAME

Add a document db.foo.save({name: “Jorge Garifuna”})

Set secondary to slave (otherwise you wont be able to see data) rs.slaveOk()

Query secondary db.foo.find()


Some Node JS stuff


Platform built on Google Chrome’s JavaScript Runtime

For building fast, scalable network applications

Substitute for Apache/PHP But you create your own server code


Download from nodejs.org

Run installation


var http = require('http');http.createServer(function (req, res) { res.writeHead(200, {'Content-Type': 'text/plain'}); res.end('Hello World\n');}).listen(1337, '127.0.0.1');console.log('Server running at http://127.0.0.1:1337/');

1. Create new folder2. Create testserver.js file and place within

folder3. Run node

1. Node testserver.js4. On browser go to: http://127.0.0.1:1337


1. A Node JS Application Framework2. Uses MVC (model, view, controller)

pattern


1. From the command line run Node Package Manager

1. sudo npm install -g express


1. From the command line run1. Express ./YOUR_APP_NAME

2. Change into your new app folder1. cd ./YOUR_APP_NAME

3. Install depedencies1. npm install -d


1. Change into your new app folder1. cd ./YOUR_APP_NAME

2. Run app with node1. node app

3. On browser go to URL:1. http://localhost:3000


1. Download workout web api from1. https://github.com/donnfelker/workout-

tracker2. Checkout Develop a RESTful API Using

Node.js With Express and Mongoose1. http://pixelhandler.com/blog/2012/02/09/

develop-a-restful-api-using-node-js-with-express-and-mongoose/

While you think… Sign up to LAMPsig’s mailing list at:▪ http://lampsig.org

Join LAMPsig on Meetup at:▪ http://www.meetup.com/LAMPsig

Jorge Garifuna▪ [email protected]▪ @jgarifuna


1. http://www.mongodb.org2. http://nodejs.org3. http://expressjs.com4. http://pixelhandler.com/blog/

2012/02/09/develop-a-restful-api-using-node-js-with-express-and-mongoose

5. http://lampsig.org6. http://www.meetup.com/LAMPsig


A practical intro to web development with mongo db and nodejs when, why and how

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