hugodias

Technical questions

1. What techniques would you use to make sure an API is reliable and scalabe for reading operations to support 1M requests a day with peak of 2000 concurrent users?
2. You have just been put in charge of a legacy code project which is difficult to maintain – what would you plan to improve in order to make the project easier to maintain in the long-term?
3. What is an acceptable response time for a ready-only API GET method in your opinion?
4. What is dependency injection? What are the benefits of using it?
5. Do you test your applications? What are the importance of tests in software development and the difference between each type of test? (Unit tests, E2E, Integration tests, Load Test)

Role-specific questions

1. What metrics do you use to monitor a backend application performance?
2. What metrics do you use to monitor your teams performance?

hugodias

<?php

/**
 * @param $tag
 *
 * @return string
 */
function close_tag($tag)
{
    return "</" . $tag . ">";

hugodias

1. Install homebrew
2. Update homebrew with brew update
3. Add josegonzales tap running: brew tap josegonzalez/php
4. Install mcrypt running brew install php54-mcrypt --without-homebrew-php (php54 => php 5.4.x ; php54 => php 5.3.x, etc ...)
5. Open your PHP.ini and add extension="/usr/local/Cellar/php54-mcrypt/5.4.24/mcrypt.so"
6. Restart your apache

hugodias

import React from 'react'
import {
  ApolloClient,
  ApolloProvider,
  InMemoryCache,
  createHttpLink,
} from '@apollo/client'

import { setContext } from '@apollo/link-context'
import Loading from './components/Loading'

hugodias

Post-mortem (incident #1)

Date

2019-03-18

Status

Completed

Summary

hugodias

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /

RewriteRule ^(br|en|es)$ index.php?lang=$0 [L,QSA]

RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

hugodias

<script>
function RecurringTimer(callback, delay) {
    var timerId, start, remaining = delay;

    this.pause = function() {
        window.clearTimeout(timerId);
        remaining -= new Date() - start;
    };

    var resume = function() {

hugodias

<IfModule mod_headers.c>
  Header always set X-XSS-Protection "1; mode=block"
  Header always set X-Frame-Options "SAMEORIGIN"
  Header always set X-Content-Type-Options "nosniff"
  Header always edit Set-Cookie (.*) "$1; HTTPOnly"
  Header always edit Set-Cookie (.*) "$1; Secure"
</IfModule>

hugodias

# app/models/mymodel.rb
# include Tokenable
###
# app/models/concerns/tokenable.rb
module Tokenable
  extend ActiveSupport::Concern

  included do
    before_create :generate_token
  end

hugodias

func enableCorsJson(fn http.HandlerFunc) http.HandlerFunc {
  return func(w http.ResponseWriter, r *http.Request) {
    w.Header().Set("Content-Type", "application/json")
    w.Header().Add("Access-Control-Allow-Origin", "*")
    fn(w, r)
  }
}