Ashrith Mekala ashrithr

##Install keydown:

gem install keydown

##Generate Template

keydown generate demo_presentation

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

Sinatra

Installation:

Dependencies: ruby

gem install sinatra

Storm

Storm is a distributed and fault-tolerant realtime computation system

###Features of storm:

Scalable and robust
Fault-tolrant (automatic reassigning of tasks)
Reliable (all messages are processed at least once)
Fast

Installing required convertors on mac:

HandBrake CLI for H.264/AAC/MP4

http://handbrake.fr/downloads2.php

ffmpeg for VP8/Vorbis/WebM

Start server on one machine using:

iperf -s -i 1

-i specifies the interval at which the output is specified
-s specified to start server

Start client on another machine using:

Time to generate 1 million hash entries:

Ruby hash = 3.5 secs
Redis = 91 secs
Postgres = 179 secs

Time to lookup 1 million entires in hash:

Ruby hash = 1.35 seconds
Redis = 71 secs

	#!/bin/bash

	function usage () {
	script=$0
	cat <<USAGE
	Creates scala project structure to be used with sbt

	Syntax
	`basename $script` project_name artifact_id

	Function CreateSheetIf(strSheetName As String) As Boolean
	'Returns false if does not creates a worksheet
	'Returns true if it creates a worksheet

	Dim wsTest As Worksheet
	CreateSheetIf = False

	'Check to see if the worksheet exist, if does not exists wsTest will be "Nothing"
	'otherwise wsTest will be assigned to the worksheet
	Set wsTest = Nothing

	package com.cloudwick.hdfs;

	import java.io.BufferedInputStream;
	import java.io.BufferedOutputStream;
	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;