rajeevkannav

1. Downloading

32 bits version

$ wget https://get.popcorntime.sh/build/Popcorn-Time-0.3.10-Linux-32.tar.xz -O popcorntime.tar.xz

64 bits version

rajeevkannav

System Design Cheatsheet

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

Basic Steps

1. Clarify and agree on the scope of the system

• 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?

rajeevkannav

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.

rajeevkannav

#first generate a key for your domain
openssl genrsa  -out yourdomain.com.key 2048

#then generate the request
openssl req -new -key yourdomain.com.key -out yourdomain.com.csr

rajeevkannav

FROM rails:4.2.3

MAINTAINER Renato Filho <renatosousafilho@gmail.com>

ENV HOME /home/app
ENV RAILS_ENV development

RUN useradd -m -s /bin/bash app

RUN gem install -N bundler

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#/bin/bash

##########################################################
### INTRODUCTION
##########################################################
: '
Install and configure R (Redis) + ELK server from scratch on CentOS 6.5.

* Logstash version 1.4.2
* Elasticsearch version 1.3.2

rajeevkannav

class API::V1::BaseController < ApplicationController

  skip_before_filter :verify_authenticity_token

  before_filter :cors_preflight_check
  after_filter :cors_set_access_control_headers

  def cors_set_access_control_headers
    headers['Access-Control-Allow-Origin'] = '*'
    headers['Access-Control-Allow-Methods'] = 'POST, GET, PUT, DELETE, OPTIONS'

rajeevkannav

Postgres 9.2 - Install, Setup and Quick Reference

Set the default template to UTF8

$ su postgres
$ psql -U postgres
psql (9.2.4)
Type "help" for help.

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#!/bin/sh

## Description:
##  install script of s3fs
##
## Usage: 
##  install-s3fs.sh [mountpoint] [bucketName] [accessKeyId] [secretAccessKey]

MOUNT_POINT=$1
BUCKET_NAME=$2

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Commands examples

If the namespace is not used then the commands will perform on top of the default database. bundle exec rake db:create bundle exec rake db:migrate

By using the namespace we are going to use all the configuration for our alternate DB. bundle exec rake store:db:create bundle exec rake store:db:migrate