introduction to versioning (vcs) for developers

Iain Hubbard, Development Manager @iainhubbard

Joseph McDermott, Senior Developer @Joseph_McD

We help enterprise businesses develop

& improve ecommerce operations

using open source software

• Founded in 2008

• Located in the Northern Quarter, Manchester

• Magento Gold Solution Partner

• Technical agency focused on Magento Enterprise

• Team of 25 people

Featured Customers

Magento is an open-source

ecommerce solution, written

in PHP with a MySQL database

• Open source eCommerce platform

• Written in PHP using Zend Framework

• MySQL database

• MVC

• Its free! (well… some of it)

• Everything you need to sell online

• Modular architecture

• History of changes

• Somewhere to share your code

• Facilitates team work

- ie. same files, same time, different places

• Somewhere to browse your code

• Helps document changes

• Development workflow

• Backup

• Track down problems

• Manage your code efficiently

• Develop multiple features at the same time

• Allow you to go back if disaster strikes

• Know exactly what was changed, by who and when

• Code reviews

• Continuous integration

• Share code

• Deployments

• Don’t have time for version control

• 1 developer works alone on 1 project

• Teams email updated files to each other

• Keep history of files named xxx.bak1, xxx.bak2

• Developers “pass the spoon” around

• Manual FTP of files to deploy

• We use SVN (for now)

• Many developers work together on many projects

• Any developer can work on any file on any project at any time

• We use a hosted solution, Beanstalk, which we’ll introduce in the workshop

• Branch for development, staging and trunk

• All developers work automatically deployed from development

• Client signs off work on staging

• We deploy to production from trunk

• We create short lived feature branches as required

• We know every change to every file in every deployment, ever

• Problem with a website, we start with what changed and who changed it

• Lead developer can easily monitor important changes or new starters

• Our clients have access to review and can also commit changes

• Distributed vs Centralised

• Git is distributed

• SVN is centralised

• Versions of truth differences

• There are others but we focusing on Git and SVN

• Distributed

• Created to support development of the Linux kernel

• Features

- Distributed development

- Efficient handling of large projects

- Don’t need internet connection

• Many versions of the truth

• Centralised

• Created to fix the problems found in CVS

• Features

- Centralised development

- Branches are cheap

- Requires network connection

• Single version of the truth

CV Deadline: TBC Start Date: Jul/Sept

• Basic Requirements

• Object-oriented programming and design skills

• Attention to detail!

• Demonstrable programming ability

• Desirable Skills

• PHP

• MVC

• SQL

• Linux/Unix

• jQuery, Prototype or other JavaScript experience

Thank You

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