CHOOSING TECHNOLOGYTuesday July 5th

Daniel Doubrovkine - http://code.dblock.org - dblock@dblock.org

@dblockdotorg #gachoosingtech @ gnrlassembly

BUILDING SOFTWARE

unlike building _________________

PROBLEM DOMAIN

What are we making? What is the domain?

Ride Sharing Website Transportation

Art Search Engine Fine Art

WHAT IS IT GOING TO DO?

• Who is going to use it and how?• What stories will it tell?

CHOOSING TECHNOLOGY

TRADITIONAL APPROACHES

STACK

a stack that works a stack that worked

STACK: RUBY ON RAILS

AWS (S3, Cloudfront)

Heroku

RubyRails

Backbone.js

+60

gem

s

MongoDB

+ ad

dons

STACK: LAMP

Linux

ApacheMySQL

PHP Python

Rackspace

Zend Django

STACK: J2EE

Java

JNDIJDBCEJBs

RMI

JVM

JMS

IDLJSP JSXMLJTS

JTAJMJAF

Windows

WHAT DO STACKS DO?

• Help You Focus on The Domain• Classify Problems• Offer Generic Solutions• Provide Consistent Experience• Map Software Evolution• Reuse Skills

DATA STORAGEEASY CHOICE

Domain Data Database

Transportation(Ride Sharing Website)

users transportedvehicles usedrides shared

Art Search Engine(Fine Art)

artistsartworksgenomes

BUSINESS LOGICIMPOSSIBLE CHOICE

Stories Requirements Framework

offer a riderequest a ride

thank for a rideweb framework

good at workflow

search for an artistrecommend art

web frameworkgood at search

SCALABILITY

• Effort to Provide Service with More ________– Users– Traffic– Data– Calculations

Unit of Scale

COMPLEXITY

• Number of Moving Parts• Time to Rebuild from Scratch• Developer Bus Factor

COST

• People + Time + $ for ________– Minimum Viable Product– Hosting and Storage– Features and Bugs– Operations

CHOOSING TECHNOLOGY DOESN’T HAVE TO BE BORING

LESS TRADITIONAL APPROACHES

DEVELOPER HAPPINESS

• Developers Are Happy with ______– Their Own Choices– Cutting Edge Technology

BULLET PROOF LOGIC

• It Worked For Me Before• It Didn’t Work for Me Before• It Sounds Exciting• ______ Uses It

CHOOSING TECHNOLOGY DOESN’T HAVE TO BE A SCIENCE

PERSONAL APPROACH

PRAGMATIC

• Try It … Iterate … Keep It … Toss It– Easy to Learn– Frustration-less– Quick to Leverage– Vibrant Community– Elegant Solutions

DID YOU MAKE A GOOD CHOICE?

Good Technology Choices Help Developers Focus on the Problem Domain

Time

ResultsFightingLearning

IS IT TIME TO RESET?

• Reset Early, Several Times• Rational Thinking Kills Companies• Incremental Rewrites Take Forever• Think “Startup”

QUESTIONS?

name: Daniel Doubrovkine (aka. dB.)

company: http://art.sy twitter: @dblockdotorg blog: http://code.dblock.org link to slides here

email: dblock@dblock.org