razorcd

# AWS specific install of Docker
sudo yum update -y
sudo yum install -y docker
sudo service docker start
sudo usermod -a -G docker ec2-user

# exit the SSH session, login again

# Docker
docker run -d --hostname my-rabbit --name some-rabbit -p 4369:4369 -p 5671:5671 -p 5672:5672 -p 15672:15672 rabbitmq

razorcd

Below are the Big O performance of common functions of different Java Collections.


List                 | Add  | Remove | Get  | Contains | Next | Data Structure
---------------------|------|--------|------|----------|------|---------------
ArrayList            | O(1) |  O(n)  | O(1) |   O(n)   | O(1) | Array
LinkedList           | O(1) |  O(1)  | O(n) |   O(n)   | O(1) | Linked List
CopyOnWriteArrayList | O(n) |  O(n)  | O(1) |   O(n)   | O(1) | Array

razorcd

Install ElasticSearch and Java

1  wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-1.0.1.deb
2  sudo dpkg -i elasticsearch-1.0.1.deb
3  sudo update-rc.d elasticsearch defaults 95 10
4  sudo add-apt-repository ppa:webupd8team/java
5  sudo apt-get update
6  sudo apt-get install oracle-java7-installer
7  java -version

razorcd

MySQL

Getting started:

• http://www.sqlteaching.com/
• https://www.codecademy.com/courses/learn-sql

Related tutorials:

• MySQL-CLI: https://www.youtube.com/playlist?list=PLfdtiltiRHWEw4-kRrh1ZZy_3OcQxTn7P
• Analyzing Business Metrics: https://www.codecademy.com/learn/sql-analyzing-business-metrics

razorcd

<!--
    HTML5 data- attributes using RESTful approach
    HTML5 specifies extensible attributes like data-foo=“bar” (or as in Twitter Bootstrap data-toggle=“modal”), which poses two problems for Rails.
    
    First, if you’re using symbol notation in link_to (for instance) to specify attributes, this fails (dash is not a valid symbol character), so:
-->
    <% link_to('Edit', '../main.html', :class => "btn", :data-toggle => "modal") %> <!-- INVALID!! -->

<!--
    There are two solutions: