Three Devs and a Maybe

By Michael Budd, Fraser Hart, Lewis Cains, Edd MannTechnology Education

Three Devs and a Maybe episodes

December 23, 2016114: Episode 2.0 with Joe Watkins
In this weeks episode we are joined by good friend of the show Joe Watkins.
We start off discussion with the successful release of PHP 7.1 and what is in store for Joe now as release manager for that version.
Following this, we chat about the libui and Yubico PHP wrappers he as been working on and development of a better Raspberry Pi OS.
Finally, we highlight progress made towards incorporating a JiT compiler within PHP and some interesting things you can do with Zero-width joiner’s and Emoji’s in Unicode.
Show Links
PHP 7.1.0 Released

PHP RFC: Debugging PDO Prepared Statement Emulation v2

andlabs/libui

The GTK+ Project

krakjoe/ui: Cross platform UI development in PHP

Musings, ninja ones: Expanding Horizons

Joe Watkins on Twitter: “#PHP 7 drew, and is animating, what you see here with #libui”

Yubico

krakjoe/u2fh: PHP7 u2fh

krakjoe/u2fs: PHP7 u2fs

Yubico/php-yubico: PHP class for Yubico authentication

HomePlugs

LastPass

Have I been pwned?

Raspberry Pi

elephos

elephos/buildroot: buildroot source for image creation

Windows 10 IoT Core

X Window System

Wayland

wayland-project/weston: Reference compositor for Wayland

raspberrypi/maynard

php.internals: JIT for PHP project

Just-in-time compilation

Lua Programming Language

DynASM

Wes Bos on Twitter: “Woah, you can an ES6 spread to see what an emoji is made up of”

Emoji.prototype.length - a tale of characters in Unicode
33 min
December 16, 2016113: Macro vs. Micro Vision
In this weeks episode we start off by congratulating Mick on handing in his masters dissertation.
We then move on to discuss decision trees, ordinal regression and genetic algorithms.
Edd then mentions managing large tables in Postgres, MVCC, Fill factors and Vacuuming a table.
From here we highlight an interesting JavaScript Unicode/New-Line length issue that occurred recently.
Finally, we touch upon testing time-dependent processes in isolation, dreaded CRM integration and sign-up processes.
Corrections: Couple of mistakes by Edd; its’ MVCC not MVVC, and any character that can’t be represented using 8 bits in PHP will have a strlen > 1.
Show Links
Decision trees

Ordinal regression

Weka - Data Mining with Open Source Machine Learning Software in Java

Learning to rank

Shannon entropy

The Awesome Table Fillfactor to speedup UPDATE and SELECT statement

PostgreSQL - Difference between table fillfactor and index fillfactor

PostgreSQL Concurrency with MVCC

grayhemp/pgtoolkit: Tools for PostgreSQL maintenance

Reducing bloat without locking

Reduce bloat of table without long/exclusive locks

TOAST - PostgreSQL

Understanding Character Sets and Encodings - Three Devs and a Maybe

JavaScript has a Unicode problem - Mathias Bynens

bestiejs/punycode.js: A robust Punycode converter that fully complies to RFC 3492 and RFC 5891.

Basic Multilingual Plane (Unicode)

The Great Newline Schism

cemerson/clock - Packagist

krakjoe/uopz: User Operations for Zend

Carbon - A simple PHP API extension for DateTime.

Test Doubles

seanpowell/Email-Boilerplate: The email boilerplate for sending out nicely formatted messages.

Taylor Otwell on Twitter: “Laravel 5.4: write your mail / notifications in simple Markdown with Blade…”
52 min
December 06, 2016112: The Mafia Effect
In this weeks second in-person episode, we start off by congratulating Fraser on his recent engagement.
We then move on to chat about setting up Kong, rate-limiting APIs and monitoring the health of an application system.
From here we discuss the final stages of Mick’s masters dissertation, highlighting the PageRank paper and the Matthew (not Mafia) effect.
Finally, we mention Edd’s trip to Silicon Milkroundabout and blog posts that he has recently had the chance to publish.
Show Links
Kong

Kong - Rate Limiting

Apache Bench

Kong, the API/Microservice Management Layer with Ahmad Nassri - Three Devs and a Maybe

Kali Linux

Major DDoS attack on Dyn DNS knocks Spotify, Twitter, Github, PayPal, and more offline

Tesco Bank: How was £2.5m stolen from customers’ accounts?

Sending Metrics with DogStatsD

DataDog/php-datadogstatsd: A PHP client for DogStatsd

GoCardless

418 I’m a teapot

Stripe

Convention over configuration

The PageRank Citation Ranking

Google Scholar’s Ranking Algorithm

How Search Works - Google

Algorithms - Google

Link farming

Silicon Milkroundabout

Apache Cassandra

Opera Mini

X-Forwarded-For

Throttling and Debouncing Function Invocation in JavaScript

Using Constraint-based Ordering in PHP

Managing Background Processes within Symfony

The Brits Who Designed the Modern World
44 min
November 30, 2016111: Let it Crash
In this weeks episode Mick and Edd start off discussion with an update on Mick’s masters dissertation.
We then move on to highlight the value of getting an MVP released, and the old adage that hindsight is 20/20.
Edd then brings up how he has had the chance to revisit MyBuilder’s logging and monitoring infrastructure recently, re-accessing Severity levels along the way (embarrassingly missing out Critical in the podcast).
He also mentions how background processes used within the application have changed overtime - discussing the difference between Time-dependent and Continuous processes.
Finally, we chat about successfully introducing Supervisor into the stack and Erlang’s ‘Let it Crash’ philosophy.
Show Links
Zencastr

Extract, transform, load

If You’re Not Paying for It; You’re the Product

syslog

When to use the different log levels? - Stack Overflow

PSR-3: Logger Interface

Loggly

Sentry

Supervisor

Cron

mybuilder/cronos-bundle

mybuilder/supervisor-bundle

The Netflix Tech Blog: Chaos Monkey Released Into The Wild

Let it Crash

Jest

Selenium

PhantomJS

Testing Pyramid
50 min
November 24, 2016110: Getting Started using Composer with Jonathan Klein
In this weeks episode we are joined by Jonathan Klein to discuss his recently released Composer Pluralsight course.
We start off by discussing the problem Composer is trying to solve, followed by past attempts at trying to solve it in the PHP landscape.
Following this, we move on to discuss how the composer.json and composer.lock files work, the importance of versioning, the Semantic Versioning standard and how autoloading works.
Finally, we delve into a couple of lesser-known Composer features, such as the event life-cycle, scripts and the plugin architecture that is present.
Show Links
Jonathan’s Blog

Jonathan Klein on Twitter

Composer: Getting Started (Pluralsight Course)

Composer

PEAR - PHP Extension and Application Repository

Yarn

Yarn - Introductory Blog Post

The composer.json Schema - Composer

Semantic Versioning

Packagist Semver Checker

Versions - Composer

PSR-0: Autoloading Standard - PHP-FIG

PSR-4: Autoloader - PHP-FIG

Scripts - Composer

Setting up and using plugins - Composer

fxpio/composer-asset-plugin: NPM/Bower Dependency Manager for Composer
37 min
October 30, 2016109: Processing Signals and Collecting Garbage with Joe Watkins
In this weeks episode we have a long overdue catch-up with Joe Watkins.
We start off discussion with progress on PHP 7.1 and work Joe has been doing to provide an interface to libui within PHP.
We then move on to chat about a couple of interesting RFC’s that are currently under-discussion, followed by managing long-running PHP processes with Supervisor and Unix signaling.
Finally, we highlight how Garbage collection works and how PHP implements the concept to help manage memory.
Show Links
PHP 7.1.0 Release Candidate 4 Released

PHP 7.1.0 Release Candidate 5 Released

krakjoe/ui - Cross platform UI development in PHP

andlabs/libui - Simple and portable GUI library in C

Pong example using krakjoe/ui

Space example using krakjoe/ui

PHP-GTK

Trending repositories on GitHub

PHP Next (7.2)

PHP RFC - Deprecate bundling PEAR/PECL and replace with composer/pickle

PHP RFC - Traits with interfaces

Traits

Unix signals

Supervisor - A Process Control System

PHP PCNTL Extension

PHP - pcntl_signal_dispatch

PHP - declare

Taking PHP Seriously

Garbage collection

Garbage collection in PHP

Concurrent Cycle Collection in Reference Counted Systems

PHP - a fractal of bad design

Circular references

ircmaxell’s blog - What About Garbage?

composer/composer - Disable GC when computing deps
34 min
September 10, 2016108: The Vinyl Experience
In this weeks episode we start off discussion on the latest Apple event, what we think the next big product will be (the Apple Hat?!) and phone battery life woes.
We then move on to chat about immutable design considerations, controlling mutation to aid performance and being bit by values vs. references.
From here we highlight how profilers such as Blackfire are a great way of benchmarking/profiling your application - providing statistics over only your own intuitive claims.
Finally, we mention database backup strategies, AVL trees and adding AirPlay support to your Vinyl deck.
Show Links
Apple - Keynote September 2016

Humble Book Bundle - Joy of Coding

Money Pattern

PHP - DateTimeImmutable

PHP - DateTimeInterface

Blackfire.io

XHProf

Dropbox-Uploader

AVL Trees in Clojure
49 min
September 01, 2016107: More Chemistry than the Periodic Table
In this weeks episode we start off the show by catching up on the ‘programming filled’ holidays both Edd and Mick have just come back from.
We then move on to discuss Mick’s photo-shoot?!, Edd’s half-marathon training and highlight our deployment/testing processes.
Finally we ‘Shave the Yak’ and discuss event-oriented system design - highlighting how it has been used in a recent project and the pros n’ cons of such an approach.
Show Links
Lets Get Ready to Rumble

React - shouldComponentUpdate

Anagram Solver in Clojure

Finding anagrams for a given word - Stack Overflow

words (Unix)

assoc-in - clojure.core

Building Microservices

PostgreSQL - Up and Running

Understanding “bitmap heap scan” and “bitmap index scan”

VPS hosting

Half marathon - training programme

Dropbox Document Scanner

Why don’t podcasts use VBR MP3s? Because iOS and macOS don’t accurately seek them

Yak shaving

Why Are Computers

99 Bottles - Sandi Metz

Event Sourcing
53 min
August 11, 2016106: The World of Amazon Web Services with Jason Marden
On this weeks episode we are lucky to be joined by Jason Marden, to discuss the world of Amazon Web Services.
We start off the show talking about Jason’s recent visit to the AWS Summit in London, and what the talking points were from the conference.
From here we delve into the Serverless Architecture, how AWS Lambda is paving the way of FAAS, containers and view-based aggregation services.
The Immutable Server is next brought up, highlighting the change in deployment philosophy that can be achieved by using such a concept.
Finally, we discuss the value of a good debugger, bringin’ back awesome screen-savers and the craze of Pokemon Go.
Show Links
AWS Enterprise Summits 2016 - London

Serverless Architectures

What is Serverless Computing?

What is Function as a Service (FaaS)?

Interview: Building the Latest Campaign for David Guetta - Serverless Code

Serverless - The Serverless Application Framework powered by AWS Lambda and API Gateway

Amazon EC2 Container Service - Docker Management

Amazon DynamoDB - NoSQL Cloud Database Service

Elastic Compute Cloud (EC2) - AWS

AWS Lambda - Serverless Compute

Using AWS Lambda with Scheduled Events - AWS Lambda

AWS Elastic Load Balancing - Cloud Network Load Balancer

AWS Auto Scaling

Amazon CloudFront - Content Delivery Network (CDN)

Amazon Relational Database Service (RDS) - AWS

AWS Amazon ElastiCache - in-memory cache service

AWS Amazon Route 53 - Domain Name Server - DNS Service

AWS CodeCommit Managed Source Control Service

AWS CodeDeploy Automated Software Deployment

AWS CodePipeline Continuous Delivery

Amazon CloudWatch - Cloud & Network Monitoring Services

AWS CloudFormation - Infrastructure as Code & AWS Resource Provisioning

Amazon SQS - Message Queuing Service - AWS

Amazon API Gateway

Docker - Build, Ship, and Run Any App, Anywhere

Fabric

Immutable Server

XScreenSaver

IntelliJ IDEA the Java IDE

Xdebug - Debugger and Profiler Tool for PHP

Ingress
54 min
July 28, 2016105: Hip hip (array)
On this weeks show we start off discussion around what we have been up to away from the keyboard, and an update on Mick’s big freelance project.
We then move on to the pros n’ cons of being tied into an ecosystem such as AWS, React performance, Micro-services and the expected FUD outcry when a web application makes a significant change.
Finally, we chat about how important logging and monitoring are within an application, and how it can become tricker to track down issues when a system is sufficiently large or a sum of many parts.
Show Links
Mr. Robot

Amazon Relational Database Service (RDS) - AWS

Amazon Aurora MySQL Compatible Database - AWS

Amazon ElastiCache - in-memory cache service

Principles Of Microservices by Sam Newman

From Macro To Micro by Sam Newman

DDD and Microservices: At Last, Some Boundaries! by Eric Evans

The Future of Programming (Kuppelsalen, Copenhagen) by Uncle Bob Martin

The S.O.L.I.D. Principles of OO and Agile Design by Uncle Bob Martin

Building Microservices

Ironman Triathlon

GitHub’s New Font

45 Jokes Only Programmers Will Get

Immutable.js

Fear, uncertainty and doubt

ELK Stack

Loggly

Datadog
53 min

About Three Devs and a Maybe

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Join us each week as we discuss all things software development. Frequently joined by a far more intelligent guest on the show's topic, we by no means know everything, but love what we do. Topics…

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Three Devs and a Maybe

Three Devs and a Maybe episodes

About Three Devs and a Maybe