Building for DevOps Success
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Transcript of Building for DevOps Success
![Page 2: Building for DevOps Success](https://reader033.fdocuments.us/reader033/viewer/2022042707/58cf3e061a28ab254a8b5339/html5/thumbnails/2.jpg)
2www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
ABOUT ME
• 20 years of web-scale engineering experience
• Built e-commerce systems for Dell, Pizza Hut, KFC and more…• Dell generated $10 million/day.
• The rest….$150 million in revenue every year.
• Co-founder of the DevOpsGuys• http://www.devopsguys.com
• @thedevmgr
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3www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
DEVOPSGUYS
ACCELERATE & TRANSFORM
THE WAY ORGANISATIONS
DELIVER SOFTWARE
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
SUCCESS!
(BUT FIRST COMES FAILURE)
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
KNIGHT CAPITAL GROUP
WALL
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
American global financial services company
market making
electronic execution
institutional sales
trading
In 2012…the largest trader in US equities
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
3.3 billion trades
$21 billion
A day!
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
On July 31, 2012 Knight
had approximately $365
million in cash.
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
NYSE announces plans to launch
a new Retail Liquidity Program
Enable retail customers to
get price improvement for
their stock orders
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Receives large orders from the trading platform
and breaks them up into multiple smaller
orders to find a buyer/seller match for the
volume of shares.
The larger the parent order, the more child
orders would be generated.
Photo Credit: Torben Bjørn Hansen via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
27 July 2016
“Power Peg”
Knight stopped using this
functionality in 2003
but the code was neither
deleted nor deactivated.
Photo Credit: Charles Crosbie via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Code update repurposed
an old flag that was used
to activate the “Power
Peg” functionality.
The code was thoroughly
tested and proven to
work correctly and
reliably.
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
What could possibly go wrong?
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Knight manually deploy
updates to a limited
number of servers per
day
8 servers are “updated”
Photo Credit: jovike via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
If there is an SEC filing about your
deployment something may have gone
terribly wrong!
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18www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
THE SEC FILING
During the deployment of the new code, however, one of Knight’s technicians did not copy the new code to one of the eight SMARS computer servers. Knight did not have a second
technician review this deployment and no one at Knight realized that the Power Peg code had not been removed from
the eighth server, nor the new RLP code added. Knight had no written procedures that required such a review.
-- SEC Filing | Release No. 70694 | October 16, 2013http://www.sec.gov/litigation/admin/2013/34-70694.pdf
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
August 1st, the markets open
Knight begin processing orders
7 servers begin processing orders correctly
one does not!
Photo Credit: harry harris via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
“Power Peg” is back from the dead!
Photo Credit: San Diego Shooter via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Count the shares bought/sold against a
parent order as child orders were executed
Send the child orders for execution
Stop once the parent share count has been
fulfilled
Photo Credit: marfis75 via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
27 July 2016
Cumulative tracking
functionality moved to an
earlier stage in the code
execution
And removed the count
tracking from “Power
Peg”Photo Credit: Vox Efx via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgrPhoto Credit: JD Hancock via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Imagine what would happen if you had a
system capable of sending automated,
high-speed orders into the market
without any tracking to see if enough
orders had been executed
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
27 July 2016
Photo Credit: Wooly Matt via Compfight cc
OH s**T!
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgrPhoto Credit: fPat via Compfight cc
OH s**T!
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
9:30 AM – Markets Open
9:31 AM – Traders realise something is wrong
9:32 AM – Why hasn’t it stopped?
Photo Credit: somewheregladlybeyond via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
No kill switch
Trading 8 million shares / minute
+50% of the normal trading volume
stocks +10%
Photo Credit: Marshall Astor - Food Fetishist via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
No documented procedures
Start uninstalling the new code
Removed the working code
Amplified the issue
Photo Credit: Jason Michael via Compfight cc
Left the broken code
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
45 minutes of trading
212 orders
millions of child orders
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
4 million transactions against 154 stocks
397 million shares
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
$460 million loss in 45-minutes
Photo Credit: zachstern via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Knight only has $365 million in cash
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
In 45-minutes Knight went from being the
largest trader in US equities and a major
market maker in the NYSE and NASDAQ
Photo Credit: MattysFlicks via Compfight cc
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
PEOPLE, PROCESS AND THE RIGHT TOOLS WORKING TOGETHER TO MAKE YOUR
SOFTWARE DELIVERY LIFECYCLE FASTER AND MORE PREDICTABLE.
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
OPERABILITYScalability
Deployability
Resilience
Monitoring Alerting
Disaster Recovery
Supportability
Maintainability
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
CONTINUOUS DELIVERY + OPERABILITY = DEVOPS
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44www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
KEY DEVOPS PATTERNS & PRACTICES
Developer self-service
Continuousmonitoring
Desired state management
Monitor everything
Integrated toolchains
Infrastructure as code
Collective Ownership
Continuous Improvement
Collaborative culture
Continuous experimentation
Full stack engineers
Autonomous teams
Integrated teams
Joint meetings
Job rotation
Servant leadership
Continuous integration
Continuous testing
Continuous delivery
Minimum viable product
Small batches
Automated Builds
Automated testing
Release automation
Canary rollouts
Instrument everything
Feature flags
Version everything
Test-driven development
Technical debt
Test everything
Minimum viable process
Test-drivendeployment
Common metrics
Optimise flow
Culture
Process
people
technology
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Company
Department
Team
Individual
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
• Sprint
• 2 weeks6 18
• Month
• 2 sprints
Aspirational
(60%)
• Quarter
• 3 months
• Annual
• 12 months
1 2 3Vision
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
• Sprint
• 2 weeks6 18
• Month
• 2 sprints
Aspirational
(60%)
• Quarter
• 3 months
• Annual
• 12 months
1 2 3
Positive
(70%)
VisionObjectives
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
• Sprint
• 2 weeks6 18
• Month
• 2 sprints
Aspirational
(60%)
• Quarter
• 3 months
• Annual
• 12 months
1 2 3
Positive
(70%)
Considered
(80%)
VisionObjectivesPlan
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
• Sprint
• 2 weeks6 18
• Month
• 2 sprints
Aspirational
(60%)
• Quarter
• 3 months
• Annual
• 12 months
1 2 3
Positive
(70%)
Considered
(80%)
Confident
(95%)
VisionPlanTasks Objectives
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
“SUCCESS IS NOT CHECKING A BOX.
SUCCESS IS HAVING AN IMPACT.
IF YOU COMPLETE ALL TASKS AND
NOTHING EVER GETS BETTER, THAT'S NOT
SUCCESS.”
Christina Wodtke, OKR Coach
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Scrum
Lean
Kanban
XP
DSDM
SAFe
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57www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
SCRUM IS POPULAR
Image source: State of Agile Survey, 2015
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58www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
Daily Stand-Ups
Retrospectives
Burndowns
VelocityIteration Planning
Story Mapping
Planning Poker
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59www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
Value people and how they communicate
Measure progress through working software
Collaborate with your customers
Respond to change
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60www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
THE MANIFESTO
• Individuals and interactions over processes and tools
•Working software over comprehensive documentation
•Customer collaboration over contract negotiation
•Responding to change over following a plan
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61www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
BEING AGILE
Image source: State of Agile Survey, 2015
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
LEARN TO INSPECT & ADAPT
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Organization
Roles
Teams
Cadence
Taxonomy
Plan
Practices
Alignment
Autonomy
“Let’s try to give our teams three things….
Autonomy, Mastery, Purpose”
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
AlignmentEvery team and business tracks scenarios and features consistently.
AutonomyEvery team chooses how to manage stories and/or tasks
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
OPTIMISE YOUR ORGANISATION FOR PRODUCT DELIVERY
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Continuous DeliveryFrequent Release Events
WaterfallRare Release Events
Smoother EffortLess Risk
Effort PeaksHigh Risk
Time Time
Ch
ange
Ch
ange
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
AUTOMATION IS IMPORTANT
Comprehensive, fast and reliable test and deployment automation
Trunk-based development & continuous integration
Application code and app and system configuration all in
version control
Together, the factors on the left model continuous delivery which
leads to…
Lower levels of deployment pain
Higher levels of IT performance (higher throughput & stability)
Lower change fail rates
Higher levels of org performance(productivity, market share,
profitability)
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
https://xebialabs.com/periodic-table-of-devops-tools/
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
15,000 engineers, working on 4,000+ projects
All code is checked into one source tree
(billions of files!)
5,500 code commits/day
75 million test cases/run daily
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
DEPLOYMENT PAIN CAN TELL YOU A LOT ABOUT YOUR IT PERFORMANCE
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77www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
WHERE DO I START?
• Start at the highest level
• Is measurement happening?
• Are metrics a thing?
• Ask around!
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
START WITH YOUR IMPORTANT THINGS TO YOUR TEAM
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79www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
IDENTIFY A GOAL
• Is there existing data?
• Who are the key people?
• What things are important to support this goal?
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
METRICS PROVIDE OPPORTUNITY FOR COMMUNICATION AND ALIGNMENT
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81www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
IDENTIFY A GOAL: SHIP EVERY DAY
• Is there existing data?
• Who are the key people?
• What things are important to support this goal?
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Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
IDENTIFY A GOAL: SHIP EVERY DAY
• What things are important to support this goal?
• Test Maturity • Unit tests
• Component tests
• Integration tests
• Acceptance tests
• Performance tests
• Security tests
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83www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
IDENTIFY A GOAL: SHIP EVERY DAY
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Unit Integration Acceptance Performance
Test Maturity
Product A Product B Product C
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
WORKING SOFTWARE IS THE PRIMARY MEASURE OF PROGRESS.
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
THE DELIVERY TEAM MUST RECEIVE FEEDBACK AND ACT ON IT
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
INVOLVE EVERYBODY IN THE FEEDBACK PROCESS
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
BROADCAST THE INFORMATION
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@TheDevMgr
FEEDBACK MUST BE ACTED UPON
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@TheDevMgr
HOW MANY TIMES PER DAY IS THE ANDON CORD PULLED IN A TYPICAL DAY AT A TOYOTA MANUFACTURING
PLANT?
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
“SHIT HITS THE FAN, BUT THAT DOES NOT MEAN YOU SHOULDN’T USE THE SAME
DISCIPLINE.”
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
HIGHEST PREDICTOR OF PERFORMANCE
The Study of Information Flow: A Personal Journey; Westrum, Ron
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Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
HOW WELL DO YOU IDENTIFY WITH?
• On my team, information is actively sought.
• On my team, failures are learning opportunities, and messengers of them are not punished.
• On my team, responsibilities are shared.
• On my team, cross-functional collaboration is encouraged and rewarded.
• On my team, failure causes enquiry.
• On my team, new ideas are welcomed.
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
EVERYTHING YOU DO SHOULD OPTIMISE FLOW
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
ANY OPTIMISATION NOT MADE AT THE CONSTRAINT IS AN ILLUSION
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
THROUGHPUT IS PROFITABLE, EFFICIENCY IS NOT
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
WHAT IS YOUR LEAD TIME FOR CHANGES?
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
HOW LONG DOES IT TAKE TO GO FROM CODE COMMITTED TO CODE SUCCESSFULLY
RUNNING IN PRODUCTION?
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Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
DEPLOYMENT LEAD TIME PREDICTS
• Ability for Dev and Ops to share a “common source of truth”
• Effectiveness of our automated testing in the deployment pipeline
• Ability to quickly deploy into production without causing chaos and disruption
• Ability to detect and correct problems through monitoring
• Ability for Dev and Ops to work together in a way that is “win / win”
• How quickly developers can get feedback on their work • Testing, deploying, production outcomes, customer outcomes
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
Thousands of teams +
Micro services Architecture +
Continuous Delivery
= 50 MILLION DEPLOYMENTS/YEAR
136K DEPLOYS/DAY
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110www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
FLOW OPTIMISATION
• Split into 2 teams
• “Boss” has a stopwatch (on a phone)
• Record first chip to “boss”, record last chip to “boss”
• Developers job is to “flip the chip” (black dot up or down)
• Stack chips in piles of 10
• Complete the batch before passing to next person
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SPLIT INTO 2 TEAMS
Team A
Run # Time First Time Last
1 45 45
2 30 38
3 4 21
4 4 29
5 8 25
Team B
Run # Time First Time Last
1 55 55
2 58 58
3 55 55
4 51 51
5 1.01 1.01
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www.devopsguys.comPhone: 0800 368 7378 | e-mail: [email protected]
@TheDevMgr
DEPLOY SMALLER CHANGES MORE FREQUENTLY
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113www.devopsguys.com
Phone: 0800 368 7378 | e-mail: [email protected]@TheDevMgr
8 LESSONS
1. #IdentifyTheGoal
2. #BeAgile
3. #AlignToValue
4. #DeliverContinuously
5. #MeasureWhatsImportant
6. #ActOnFeedback
7. #BuildTrust
8. #OptimiseForFlow