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Pedro Belo pedro

  • San Francisco, CA
  • @ped
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View ruby-graphql-enum.diff
+++ b/app/graph/types/day_of_the_week_enum.rb
@@ -0,0 +1,10 @@
+DayOfTheWeekEnum = GraphQL::EnumType.define do
+ name "Day of the week"
+ value("MONDAY", "Monday", value: 1)
+ value("TUESDAY", "Tuesday", value: 2)
+ value("WEDNESDAY", "Wednesday", value: 3)
+ value("THURSDAY", "Thursday", value: 4)
+ value("FRIDAY", "Friday", value: 5)
+ value("SATURDAY", "Saturday", value: 6)
View parsing.html
<!DOCTYPE html>
<TITLE>JSON Parsing Tests</TITLE>
<LINK rel="stylesheet" type="text/css" href="style.css">
<META charset="UTF-8">
pedro / RCTPushNotificationManager.h
Created Jul 12, 2016
Push Notifications error patch for React Native in iOS
View RCTPushNotificationManager.h
// Push notification manager from react-native 0.28, plus patch to handle errors correctly:
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
pedro / init.r
Last active Aug 29, 2015
R + Redis on Heroku
View init.r
# used by the R buildpack to install dependencies:
install.packages("rredis", dependencies = TRUE)
pedro / enqueue.r
Last active Aug 29, 2015
Running redis-based workers in R on Heroku
View enqueue.r
# same code used in
# only using doRedis instead of doParallel
redis_url <- Sys.getenv("REDIS_URL")
host <- gsub("redis://.*@(.+):.*", "\\1", redis_url)
pass <- gsub("redis://.*:(.+)@.*", "\\1", redis_url)
port <- as.integer(gsub(".*:(.*)$", "\\1", redis_url))
registerDoRedis("jobs", host=host, port=port, password=pass)
pedro / init.r
Last active Aug 29, 2015
Running R code in parallel on Heroku
View init.r
# used by the R buildpack to install dependencies:
install.packages("foreach", dependencies = TRUE)
install.packages("doParallel", dependencies = TRUE)
View gist:9232897015a43400c041
irb(main):018:0> RestClient::VERSION
=> "1.7.3"
irb(main):019:0> RestClient.get("")
=> "1"
irb(main):020:0> RestClient.get("").to_i
=> 200
irb(main):021:0> RestClient.get("").class
=> String
irb(main):022:0> RestClient.get("") == "1"
=> true
pedro /
Last active Aug 29, 2015
Jack White's guacamole recipe

Jack White's guacamole recipe

Recently the tour rider for a Jack White performance was made public, and it contained a recipe for guacamole intended to be made for the artist.


  • 8x large ripe Haas avocados
  • 4x vine-ripened tomatoes (diced)
  • ½ yellow onion finely chopped
  • 4x Serrano pepper (de-veined and chopped)
pedro /
Created Nov 13, 2014
Maximizing S3 Peformance

Maximizing S3 Peformance

  • 137% increase in AWS usage in the last year

  • Factors to keep in mind when picking a region

    • Performance: Proximity to users and to other resources in AWS
    • Compliance
    • Cost
  • Naming scheme is the most important thing

pedro /
Created Nov 13, 2014
Maintaining a resilient front door at massive scale, from Netflix

Maintaining a resilient front door at massive scale, from Netflix

  • Netflix is responsible for about 1/3 of downstream traffic in NA

  • Responsible team in the company is called "edge engineering"

    • Apart from resiliency/scaling, also cares about high velocity product innovation and real time health insights
  • Basic architecture:

    • end-user devices make requests to ELBs, which delegates to zuul, which routes to origin servers serving APIs