Shiva kumar rshiva

These are the Kickstarter Engineering and Data role definitions for both teams.

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Note: I'm currently taking a break from this course to focus on my studies so I can finally graduate



	class UserMailer < ApplicationMailer
	default from: "[email protected]"

	def send_to_kindle((kindle_mail, file_name, file_path)
	attachments["#{file_name}"] = File.read(file_path)
	mail(to: kindle_mail,
	subject: "Send",
	mime_type: 'application/x-mobipocket-ebook'

	require 'openssl'

	def encrypt_string(str)
	cipher_salt1 = 'some-random-salt-'
	cipher_salt2 = 'another-random-salt-'
	cipher = OpenSSL::Cipher.new('AES-128-ECB').encrypt
	cipher.key = OpenSSL::PKCS5.pbkdf2_hmac_sha1(cipher_salt1, cipher_salt2, 20_000, cipher.key_len)
	encrypted = cipher.update(str) + cipher.final
	encrypted.unpack('H*')[0].upcase
	end

	input {
	file {
	path => "file_name.csv"
	start_position => "beginning"
	sincedb_path => "/tmp/mysincedbfile"
	}
	}
	filter {
	csv {
	separator => ","

	#bin/logstash-plugin install logstash-input-elasticsearch
	#bin/logstash-plugin install logstash-output-csv

	input {
	elasticsearch {
	hosts => "localhost:9200"
	index => "shop_inventory*"
	scroll => "5m"
	docinfo => true
	query => '{ "query": {"match_all": {} }}'

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<title>Welcome to Nginx</title>
	</head>
	<body>
	<h1> Hello World</h1>
	<p> This is static page served using nginx. </p>

	</body>

	pip install selenium #install selenium Driver



	from selenium import webdriver
	from selenium.webdriver.common.keys import Keys

	for i in range(100): #100 times it will run in loop
	driver = webdriver.Firefox()
	driver.get("https://www.youtube.com/watch?v=37dnlvHfZjE") #paste the url link which you want to see certain number of times