codeami

Crisp-DM on AWS

Six phase of DM

Phase 1: Business Understanding

Amazon ec2 LAMP and FTP installation and setup

Tutorial: Installing a LAMP Web Server on Amazon Linux

Go through this amazon link http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/install-LAMP.html

Associate and Elastic IP address to your EC2 instance.

http://guides.rubyonrails.org/getting_started.html

STEP 1 create new project (creates scaffolding)

$ rails new JMDMega

$ bin/rails server--> Check localhost:3000 -> Stop ctrl +C

STEP 2 create a controller, an action, a view, 2 routes,

Pry Cheat Sheet

Youtube Tutorial 2013

Command Line

pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
pry -r ./config/environment.rb - load your rails into a pry session

Debugger

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
Scaling Twitter: Making Twitter 10000 Percent Faster

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

JavaScript Asynchronous Execution Concepts: Callbacks vs Promises - Concepts and History

Dated 10/15/2016

Please read these excellent articles/threads online (presented in order I feel is best for basic understanding) After reading the excertps presented here; please flow the links and read them, esp the comments on each QnA on SO (stackOverflow)

Sync vs Async

http://stackoverflow.com/questions/748175/asynchronous-vs-synchronous-execution-what-does-it-really-mean

	function executeReferencedRequest({ collectionUUID, requestName }, callback) {
	var _ = require('lodash');

	//Please refer Postman docs on how to generate an API KEY https://go.pstmn.io/docs-pro-api-intro
	const API_KEY = "<API-KEY>";

	/*
	Here we are making an API call to Postman (Refer: https://api.getpostman.com) using pm.sendRequest from the script,
	to fetch the collection from which we need to reuse the request.
	*/

	//Jasmine test // AUT = app under test // HCS = some resouce to be created multiple times to test pagination
	// defaultData has 11 defaultHCSID in array

	describe ("Test: Create 11 HCSes to test pagination", function () {
	beforeAll(function (done) {
	AUT.api.defaultHCS.create(defaultData).then(()=> {
	done();
	//setTimeout(function () {done();}, AUT.API_TIMEOUT);
	});
	});