stress-free continuous delivery using sensible information radiators
TRANSCRIPT
Stress-free Continuous Delivery Using Sensible Information Radiators
Vivek GanesanGainsight
Setting the Context
What is Continuous Delivery?
Three Levels of Maturity
CI - Continuous Integration
All code integrated at least every sprint
Three Levels of Maturity
CI - Continuous Integration
CD - Continuous Delivery
All code integrated at least every sprint
CI + Deployment Readiness + A Push button deployment
Three Levels of Maturity
CI - Continuous Integration
CD - Continuous Delivery
CDep- Continuous Deployment
All code integrated at least every sprint
CI + Deployment Readiness + A Push button deployment
Automated deployment on
Green
What is an Information Radiator?
Are all of these Information Radiators?
Are all of these Information Radiators?
● These are on-demand access - Not ‘always on’.
● These are not available to “all” audience in the area - Unavailable to casual onlookers.
Is this an Information Radiator?
Is this an Information Radiator?
Team 1 Team 2 Team 3
Not until this happens!
Moral
Information Radiator&
Information Refrigerator
are NOT the same!
Where is Stress introduced in a CD system?
Where is Stress introduced in a CD system?
When human responses take long!
Dynamics of a CD System with an Information Radiator
CD System
Radiator
Information
Observer
int a;char b;a=10;b=’c’;
Corrective Action
Change of State
Dynamics of a CD System with an Information Radiator
CD System
Radiator
Information
Observer
int a;char b;a=10;b=’c’;
Corrective Action
Change of State
This is quite straight-forward
COMMUNICATION SUBSYSTEM
Dynamics of a CD System with an Information Radiator
CD System
Radiator
Information
Observer
int a;char b;a=10;b=’c’;
Corrective Action
Change of State
This is not as straight-forward as it looks!
CORRECTION SUBSYSTEM
Goal
We will experiment with variations in COMMUNICATION
SUBSYSTEM
aiming to
optimize the cycle time of CORRECTION SUBSYSTEM
A Closer View of Correction Subsystem
Observer
int a;char b;a=10;b=’c’;
Corrective Action
This is not as straight-forward as it looks!
CORRECTION SUBSYSTEM
Observer
int a;char b;a=10;b=’c’;
Corrective Action
This is not as straight-forward as it looks!
Why?
This involves application of● Social Psychology● Group Dynamics● Human Motivation Theory● ….and much more that we
do not know!
A Closer View of Correction Subsystem
What is the function of Communication Subsystem?
CD System
Radiator
Information
Observer
FUNCTION
By appropriate means, relay just the appropriate information to the observer.
Radiator
Information
Observer
FUNCTION
By appropriate means, relay only the appropriate information to the observer.
Variable 1 Variable 2
CD System
What is the function of Communication Subsystem?
Variable 1 - Means of communication
1. Visual Information Radiators
Position - Does it matter?
Position - An Important Parameter in Visual Information RadiatorsActivity: Spot the error in the following workplace arrangement
● People need to turn their heads to view the monitor.
● Creates ‘Polling’ behaviour instead of ‘Radiation’ of information
Position - An Important Parameter in Visual Information RadiatorsActivity: Spot the error in the following workplace arrangement
Position - An Important Parameter in Visual Information RadiatorsAlternate Arrangement
● Everyone can lean back in the chair to see the status.
● Even while looking at laptop monitor, IR is present in peripheral visibility range.
● Ergonomically safe.
Position - An Important Parameter in Visual Information RadiatorsMulti-Team Arrangement - Less cost as teams grow
Role of Colors
Different Tools - Different Colors
Jenkins - Pipeline - Stage View
Cradiator
Jenkins Build Monitor
information-radiator
GoDashboard
The Power of Red
The Red-Amber-Green History
Stop
The Red-Amber-Green History
Stop
GoVersion 1
The Red-Amber-Green History
StopCaution
GoVersion 1
The Red-Amber-Green History
StopCaution
GoVersion 1 Version 2
The Red-Amber-Green History
StopCaution
GoVersion 1 Version 2
Version 3
Misuse of Red-Yellow-Green Scheme
Misuse of Red-Yellow-Green Scheme
• RYG scheme is mostly misused to indicate ‘progress’ of something.– They hide the truth at best
Misuse of Red-Yellow-Green Scheme
• RYG scheme is mostly misused to indicate ‘progress’ of something.– They hide the truth at best
• This creates more problems than the original ones.
Misuse of Red-Yellow-Green Scheme
• RYG scheme is mostly misused to indicate ‘progress’ of something.– They hide the truth at best
• This creates more problems than the original ones.• People get furious when ‘green’ changes to ‘red’ on the last date.
– To avoid fury, the team cuts corners– If the teams are honest, they are labelled as ‘untrustworthy’– Leads to micromanagement
Moral
Use Red-Yellow-Green Scheme to qualify completed
events
not ongoing events!
Not so soon! Are we done with colors?
1 in 8 men 1 in 200 womenare colorblind!
Source: http://www.colourblindawareness.org/colour-blindness/
More bad news!!!
Most color blind people cannot differentiate
between red and green!
Source: http://www.colourblindawareness.org/colour-blindness/
Normal Vision
Color Blind Vision
http://www.color-blindness.com/coblis-color-blindness-simulator/
How did Jenkins Build Monitor solve this?https://github.com/jan-molak/jenkins-build-monitor-plugin/issues/30 Don’t miss to read the
conversation here!
Stripes to denote failure
How did Jenkins Pipeline solve this?
No shading - Additional Text in bottom
Stripe-shading for ‘In Progress’ Builds
MoralRemember 1 out of 8 men???
Use an Information Radiator that doesn’t
leave out the colorblind!
2. Auditory Information Radiators
Distinctness from surroundings
Q: Why do we choose ‘musical’ ringtones for our mobile phones?
Distinctness from surroundings
Q: Why do we choose ‘musical’ ringtones for our mobile phones?
A: Because it will be ‘distinct’ from the surroundings.
Uniqueness Factor
Q: Why does a railway station announcement start with a music?
Uniqueness Factor
Q: Why does a railway station announcement start with a music?
A: The music helps in uniquely identifying the announcement from other noises and human voices.
Auditory alone is not enough!
Auditory information will ALWAYS forward you to visual ones, if any action is required.
What is the function of Subsystem A?
Radiator
Information
Observer
SUBSYSTEM - A
FUNCTION
By appropriate means, relay only the appropriate information to the observer.
Variable 1 Variable 2
CD System
Pass/Fail
Variable 2 - Level of information
Level of information
Latest CommitterPass/Fail
Variable 2 - Level of information
Level of information
Qualifiers
Latest CommitterPass/Fail
Variable 2 - Level of information
Level of information
Claim Info Qualifiers
Latest CommitterPass/Fail
Variable 2 - Level of information
Level of information
Summary● 3 Levels of maturity - CI, CD, CDep● Difference between Information Radiator &
Information Refrigerator● CD system has two subsystems - Tuned one
subsystem to optimize cycle time of human subsystem.
● Visual Information Radiators○ Position
■ Visibility is the key○ Colors
■ Red-Yellow-Green colors■ Case of Color blindness■ Misuse of Red-Yellow-Green scheme
● Auditory Information Radiators○ Distinctness from surroundings○ Uniqueness Factor○ Auditory forwards to visual
● Levels of Information○ Pass/Fail○ Committer list○ Qualifiers - Coverage, etc○ Avoid detailed information
Questions?