Real world continuous delivery

Real world con,nuous delivery

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Seb Rose

@sebrose h+p://cucumber.io

http://claysnow.co.uk


con5nuous : -‐ forming an unbroken whole -‐ without interrup5on

discrete : -‐ individually separate and dis5nct



delivery : -‐ the ac5on of delivering goods -‐ the process of giving birth



con5nuous delivery : -‐ a set of prac5ces and principles

aimed at, building, tes5ng, and releasing soBware, faster and more frequently

-‐ this principle helps reduce the cost, 5me and risk of delivering incremental changes to users.



con5nuous integra5on : -‐ a development prac5ce that

requires developers to integrate code into a shared repository several 5mes a day

-‐ each check-‐in is verified by an automated build, allowing teams to detect problems early



con5nuous deployment : -‐ the next step of con5nuous

delivery -‐ every change that passes the

automated tests is deployed to produc5on automa5cally



audience calisthenics



Con5nuous integra5on

h+p://www.jamesshore.com/Blog/Con5nuous-‐Integra5on-‐on-‐a-‐Dollar-‐a-‐Day.html



Automated deployment

h+p://www.moltecinterna5onal.com/images/robots.jpg

and rollback!



Artefact repository

h+p://3.bp.blogspot.com/-‐BkxV4lCQzDw/U96FMUNIDAI/AAAAAAAAK_s/GMmneXG5FG4/s1600/RoleOfAR.png



Fidelity vs. feedback

h+p://3.bp.blogspot.com/-‐BkxV4lCQzDw/U96FMUNIDAI/AAAAAAAAK_s/GMmneXG5FG4/s1600/RoleOfAR.png

More production-like

Slower feedback



h+ps://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Devops.svg/2000px-‐Devops.svg.png

Collabora5on



Conway slaw : -‐ a popular dish of shredded

cause and effect mixed with a dash of sociology



Branching

-‐ Feature branching -‐ GitFlow -‐ CoDe:U Git Flow -‐ Trunk-‐based development -‐ Release branching



Branching strategies

h+p://nvie.com/img/git-‐[email protected] h+p://www.praqma.com/sites/default/files/img/git_flow_web.pdf



Trunk-‐based development

h+p://paulhammant.com/images/mainline_vs_trunk.png



h+ps://youtu.be/30yN4hefrt0

Branching strategies



Tes5ng pyramid

h+p://claysnow.co.uk/architectural-‐alignment-‐and-‐test-‐induced-‐design-‐damage-‐fallacy/


http://claysnow.co.uk/architectural-alignment-and-test-induced-design-damage-fallacy/


Acceptance tes5ng



Smoke tests

h+p://www.seminolecountyfl.gov/core/fileparse.php/3283/urlt/smoke-‐20test-‐20image-‐20.jpg



Non-‐func5onal tests

h+ps://www.cloudave.com/wp-‐content/uploads/2014/12/Typhoon.jpg



Manual / exploratory



Test data

h+p://discovermagazine.com/~/media/Images/Issues/2013/December/dragon-‐science.jpg



Monitoring produc5on

h+p://blogs-‐images.forbes.com/kashmirhill/files/2014/04/foscam.jpg



<digression>








@sebrose h+p://cucumber.ioh+p://quoteinves5gator.com/2012/04/28/shorter-‐le+er/

“I would have wri/en a shorter le/er, but I didn’t

have the 6me”



https://estimation.lunarlogic.io/assets/cards-range-8fc41b2e3fd282125f4602a712020204.png


https://estimation.lunarlogic.io/assets/cards-range-8fc41b2e3fd282125f4602a712020204.png


<digression>



Gradual implementa5on



Feature toggles

h+p://ff4j.org/images/console-‐embedded.png



Branch by abstrac5on

h+p://con5nuousdelivery.com/wp-‐content/uploads/2011/05/branch_by_abstrac5on.png



Databases

h+p://discovermagazine.com/~/media/Images/Issues/2013/December/dragon-‐science.jpg



Risk mi5ga5on

-‐ Blue/green -‐ Canary -‐ Monitoring



Produc5on like???

h+p://tommcfarlin.com/wp-‐content/uploads/2014/04/what-‐does-‐it-‐mean.png



Harmonisa5on

homogeneous : -‐ uniform in structure or

composi5on throughout



Virtualisa5on and Containers

h+p://www.informa5on-‐age.com/sites/default/files/styles/ar5cle_landscape/public/field/image/shu+erstock_135831281.jpg?

itok=PArqfHMC

h+p://www.adm-‐compu5ng.co.uk/wp-‐content/uploads/2013/06/Virtualisa5on-‐defined.jpg



Service virtualisa5on

h+p://servicevirtualiza5on.com/blogs/1-‐1000/910-‐Screenshot20130520at10.38.46AM.png



Cost

h+p://i.dailymail.co.uk/i/pix/2009/05/13/ar5cle-‐1181248-‐03A99ECD000005DC-‐78_634x393.jpg



Taming complexity

h+p://boilingfrogs.info/files/2012/05/complexity.jpg



Loose coupling

h+ps://infomgmt.files.wordpress.com/2010/02/coupling-‐sketches-‐cropped-‐1.png



Components

h+p://zoszkoworks.com/wp-‐content/uploads/2015/01/821-‐electronic-‐components-‐1920x1080-‐photography-‐wallpaper.jpg



h+p://www.slideshare.net/StefSmith/wading-‐through-‐treacle-‐escape-‐the-‐integra5on-‐syrup-‐with-‐contract-‐tests

CDCs in the pipeline



h+p://mar5nfowler.com/ar5cles/ConsumerDrivenContracts.jpg

CDCs (aka contract tests)



Contract/collabora5on

h+p://www.slideshare.net/nitroduna/behaviour-‐driven-‐refactoring-‐or-‐im-‐a-‐programmer-‐what-‐the-‐hell-‐do-‐i-‐have-‐to-‐test



-‐ teams own whole stack -‐ in-‐house tools -‐ build, deploy, monitor



-‐ teams own whole stack -‐ feature & data toggles -‐ con5nuous deployment -‐ pioneering MDD

h+ps://youtu.be/bZNzu4UxzPU

h+p://agileonthebeach.com/wp-‐content/uploads/2015/02/Benji-‐Webber.pdf



-‐ using CDCs within pipeline

h+p://www.slideshare.net/StefSmith/wading-‐through-‐treacle-‐escape-‐the-‐integra5on-‐syrup-‐with-‐contract-‐tests



h+p://agilecambridge.net/2015/sessions/index.php?session=69

A meta-‐pipeline for genera5ng con5nuous delivery pipelines for

micro services





http://image.slidesharecdn.com/userstorymappinginpractice-130802183649-phpapp02/95/user-story-mapping-in-practice-15-638.jpg?cb=1382432108


http://image.slidesharecdn.com/userstorymappinginpractice-130802183649-phpapp02/95/user-story-mapping-in-practice-15-638.jpg?cb=1382432108

Seb Rose Twi+er: @sebrose Blog: www.claysnow.co.uk E-‐mail: [email protected]

Ques5ons?

mailto:[email protected]


CoDe:U h+p://www.praqma.com/sites/default/files/img/git_flow_web.pdf


http://www.praqma.com/sites/default/files/img/git_flow_web.pdf

Real world continuous delivery

Technology