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How agile development and continuous delivery can be combined to maximize value delivery and how do we do it at InfoJobs
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January 2012
Value driven continuous delivery
http://www.infojobs.net/gabriel-prat-masramon.prf
PRESENTATIONOUTLINE
1.Fear of change
2.Agile
3.Scrum
4.Frequent releases
5.Continuous delivery
6.Zero* downtime
7.Canary releasing
8.Q&A
FEAR OFCHANGE
RELEASEFREQUENTLY
Reduce riskIncrease adaptability
User feedback
DevelopPlan
Release sizeR
isk
RELEASEFREQUENTLY
http://www.slideshare.net/jallspaw/ops-metametrics-the-currency-you-pay-for-change
AGILEMOTIVATION
WATERFALL
AGILE
ITERATIVEDEVELOPMEN
T
AG
ILE
MA
NIF
ES
TO
CUSTOMERCOLLABORATIONover contract negotiation
1
INDIVIDUALS andINTERACTIONSover processes and tools
2
RESPONDING toCHANGEover following a plan
3
WORKINGSOFTWAREover full documentation
4
AG
ILE
PR
INC
IPLE
S
DELIVER SOFTWARE1
EMBRACE CHANGE2
SHOW OFTEN3
WORK TOGETHER4
PROVIDE ENVIRONMENT5
CHAT FACE-to-FACE6
MINIMIZE WASTE7
MAINTAIN PACE8
SEEK TECH EXCELLENCE9
LOVE SIMPLICITY10
SELF-ORGANIZE TEAMS11
IMPROVE CONTINUOUSLY12
TIME BOXEDPLANNING
CostTime
Scope
Agile!
Scope
TimeCostTraditional
From a plan driven approach to a value driven one.
Estimated
Fixed
iterative, incremental methodology for project management often seen in agile software development.
SCRUMDEFINITION
SCRUMROLES
1PRODUCT OWNERthe voice of the customer
3SCRUM MASTERfacilitator, mentor, coach
2TEAM MEMBERdeliver the product
4EXTERNAL EXPERTSconsultants, assessors, auditors
SCRUMTEAMS
shu ha ri
MYSCRUM?In this beginning stage the student follows the teachings of one master precisely. He concentrates on how to do the task, without worrying too much about the underlying theory. If there are multiple variations on how to do the task, he concentrates on just the one way his master teaches him.
At this point the student begins to branch out. With the basic practices working he now starts to learn the underlying principles and theory behind the technique. He also starts learning from other masters and integrates that learning into his practice.
Now the student isn't learning from other people, but from his own practice. He creates his own approaches and adapts what he's learned to his own particular circumstances.
DECISIONMAKING
Analysis + Design
Development
Testing + Demo
Iteration
Customer
Integration Release
“Agile” teamCentralized QA IT Operations
1 2 3 4 5
“AGILE”ANTI-PATTERN
http://gotocon.com/dl/jaoo-aarhus-2010/slides/JezHumble_ContinuousDelivery.pdf
The “last mile”
RELEASEFREQUENTLY
But wait, what does frequently mean to you?
RELEASEFREQUENTLY
Number of days with releases
1 release every 2 weeks
3,5 releases every week!
IJ 2010 IJ 2012
CONTINUOUS DELIVERY
Constant flow of new features into production
CONTINUOUS DELIVERY
IJ 2010 IJ 2012 Flickr
Flickr deploy ten times each day... Why don’t you?
http://code.flickr.com/
Fast, automated feedback on the production readyness of your application every time there is a change – to code, infrastructure, or configuration
http://channel9.msdn.com/Events/ALM-Summit/2011/Continuous-Delivery
PRODUCTION-READYSOFTWARE
create a repeatable, reliable process for releasing software
automate almost everything
keep everything in version control
build quality in
done means released
everybody is responsible for delivery
continuous improvement (kaizen)
PRINCIPLES
http://gotocon.com/dl/jaoo-aarhus-2010/slides/JezHumble_ContinuousDelivery.pdf
Sour
ce c
ontr
ol
Perf
orce
CI s
erve
r Je
nkin
s
One
-ste
p bu
ild
Ant M
aven
Auto
mat
ed te
sting
JU
nit Q
TP
Continuous delivery pillars
DEPLOYMENTPIPELINE
http://gotocon.com/dl/jaoo-aarhus-2010/slides/JezHumble_ContinuousDelivery.pdf
ZERO* DOWNTIMERELEASE UPDATES
Initial
Release 1.1
Make 1.1 app compatible with 2.0 DB
Release 1.2
Migrate db to 2.0
Release 1.3
Release 2.0
Clean 1.1 compat DB
Release 2.1
To upgrade from 1.1 to 2.0
DB Changes DB ChangesRelease updated!
CANARYRELEASING
http://tools.google.com/dlpage/chromesxs
CANARYRELEASING
Same old features
Bleeding edge features
http://www.flickr.com/photos/hanalita/5868250
Automatic rollbacks
A/B or multivariate testing
Demographic segmentation
CANARYRELEASING
THANK YOU!QUESTIONS?
http://www.slideshare.net/gabriprat/value-driven-continuous-delivery
http://www.infojobs.net/gabriel-prat-masramon.prf
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