revington

syntax on
filetype plugin indent on

let g:ale_fixers = {'php': ['phpcs --standard=PSR2']}
let g:ale_echo_msg_error_str = 'E'
let g:ale_echo_msg_warning_str = 'W'
let g:ale_echo_msg_format = '[%linter%] %s [%severity%]'

let g:erl_author="Pedro Narciso García Revington"

revington

'use strict';
// simple feistel network
function feistel(input) {
    var l1, l2, r1, r2, i = 0;
    l1 = (input >> 16) & 65535;
    r1 = input & 65535;
    for (i = 0; i < 3; i++) {
        l2 = r1;
        r2 = l1 ^ ((((1366 * r1 + 150889) % 1114111) / 1114111.0) * 32767);
        l1 = l2;

revington

{
  "scripts": {                                                                
    "test": "istanbul cover node_modules/mocha/bin/_mocha -- --bail --check-leaks test",
    "bundle": "rm -rf node_modules; git rm -rf --cached node_modules; npm install --production --ignore-scripts && git add -f node_modules && npm rebuild && (cd node_modules/aerospike/aerospike-client-c/; rm -r include lib lua package/usr package/aerospike-client-c-libuv-*) && git add -f node_modules/aerospike/aerospike-client-c"
  } 
}

revington

#!/bin/bash

MYSQL_ROOT_PASSWORD=root

function docker_container_ip {                                        
  docker inspect "$1" | jq -r '.[0] | .NetworkSettings | .IPAddress'  
}            

echo "Run mysql container"                                                  
mysql_id=$(docker run -d -e MYSQL_ROOT_PASSWORD=$MYSQL_ROOT_PASSWORD mysql) 

revington

#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?

revington

"use strict";
var express = require('express'),
    nano = require('nano'),
    path = require('path'),
    compression = require('compression'),
    favicon = require('serve-favicon'),
    logger = require('morgan'),
    cookieParser = require('cookie-parser'),
    session = require('express-session'),
    bodyParser = require('body-parser'),

revington

#!/bin/bash
export IP=$(/sbin/ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}')
echo "setting up ip ${IP}"

check_service(){
  echo `upnpc -l | grep $1'->' | grep -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b"`
}

register(){
  local service_name=$1

revington

#!/bin/bash                                                               
                                                                          
while read  -r line; do                                                   
  curl -X DELETE http://localhost:5984/$line                              
done  < <( curl http://localhost:5984/_all_dbs  2> /dev/null |  node -e " 
process.stdin.setEncoding('utf8');                                        
process.stdin.resume();                                                   
var buf = '';                                                             
process.stdin.on('data', function(chunk){                                 
  buf += chunk;                                                           

revington

#!/usr/bin/env sh
trap 'killall' INT

killall() {
    trap '' INT TERM     # ignore INT and TERM while shutting down
    echo "**** Shutting down... ****"     # added double quotes
    kill -TERM 0         # fixed order, send TERM not INT
    wait
    echo DONE
}

revington

ssh -Ni ./my_key.pem -L 5984:127.0.0.1:5984 ec2-user@xxxxxxamazon-instance.compute.amazonaws.com