mongodb Error: failed to connect to [localhost:27017]

source:

  http://www.cnblogs.com/CccccYj/p/3548967.html

  or might be a permission issue try sudo mongod to fix it.

Use node.js to handle image by gm

resource:

  http://aheckmann.github.io/gm/docs.html

MongoDB shell usage

1. Install mongodb.

2. excute mongo

        ==>   show dbs.

3. mongo xxx  ==> connect to xxx database.

Use BackBone.js and Node.js to build web application

Source:

 Lesson1: http://hop2croft.wordpress.com/2012/04/14/basic-node-js-and-backbone-js-application-i/

Lesson2: http://hop2croft.wordpress.com/2012/04/15/basic-node-js-and-backbone-js-application-ii/



Node js slide:

    https://speakerdeck.com/josephj/node-dot-js-web-qian-duan-cheng-shi-kai-fa-shi-wu

Deploy your web app on heroku

Sources1:

http://casear.blogspot.tw/2012/06/heroku-nodejs.html

Source2:
http://embeddedfun.blogspot.tw/2011/11/heroku-nodejs-mongolab.html

How to use mongoDB on heroku

Start Learning Grunt Task manager

Source: slide 1

             slide 2

 hello grunt sample code:

   github

How to fix MongoDB connect fail

Steps as shown below:

 sudo rm /var/lib/mongodb/mongod.lock   

sudo -u mongodb mongod -f /etc/mongodb.conf --repair 
sudo service mongodb start