Continuous Delivery - Jfokus...Continuous Delivery and Zero Downtime AXEL FONTAINE @axelfontaine...

Continuous Delivery

and Zero Downtime

AXEL FONTAINE@axelfontaine

axelfontaine.com

Entrepreneur - Public Speaker - Continuous Delivery Expert

AXEL FONTAINE@axelfontaine

axelfontaine.com

Entrepreneur - Public Speaker - Continuous Delivery Expert

flywaydb.org getphoton.com

photon

about

questions

GOAL

Fully automated deploymentof a complete application

into productionmultiple times a daywith zero downtime

Puttingthingsinto

PERSPECTIVE

http://digitalcitizen.ca/2009/06/22/simpsons-profile-pics-for-facebook-and-other-applications/

CONTINUOUS

DELIVERY

http://www.flickr.com/photos/kamshots/3096111340/

stackoverflow.com

stackoverflow.com

stackoverflow.com

stackoverflow.com

Prerequisites

Processhttp://www.flickr.com/photos/feffef/460299390/in/photostream/

Processhttp://www.flickr.com/photos/feffef/460299390/in/photostream/

Build

Build

Version Control

Version Control

Testhttp://www.flickr.com/photos/vitorcastillo/2994723741/

Testhttp://www.flickr.com/photos/vitorcastillo/2994723741/

Build

DEV

SmallTests

Build

DEV

SmallTests

MediumTests

Build

DEV

SmallTests

MediumTests

LargeTests

VersionControl

Build Build

DEV ContinuousIntegration

SmallTests

MediumTests

LargeTests

SmallTests

MediumTests

LargeTests

DEPLOYMENTautomation

http://www.flickr.com/photos/soldiersmediacenter/3650607959/

do

NOT

deploy

SNAPSHOTS !

VersionControl

Build Build Release

DEV Continuous Integration

SmallTests

MediumTests

LargeTests

SmallTests

MediumTests

LargeTests

Artifact Repository

DB DeltaCode Configuration

What gets deployed?

Code

DeploymentPackage

Code

DeploymentPackage

DeploymentScript

backupstopinstallstart…

Code

DeploymentPackage

DeploymentScript

backupstopinstallstart…

Release

Continuous Integration

Artifact Repository

Target

DeploymentScript

backupstopinstallstart…

Configuration

DeploymentPackage

Code

Maybe it could change one day ≠ Environments

Code

DeploymentPackage

?Environment Detection

Code

Auto-Configuration

TestEnvironment

Detection

Release

Continuous Integration

Artifact Repository

Target

DeploymentScript

backupstopinstallstart…

DB Delta

The Fearof

DDL

VS

DML DDL

Name Balance

Homer 163

Marge 214

Bart 9

Lisa 25

VS

DML DDL

Name Balance

Homer 0

Marge 0

Bart 0

Lisa 0

Name

Homer

Marge

Bart

Lisa

DB Delta

Code

DeploymentPackage

Code

DeploymentPackage

DB?

?

flywaydb.org

Release

Continuous Integration

Artifact Repository

Target

DeploymentScript

backupstopinstallstart…

Registration

MailService

Registration

MailService

Registrationv2

MailService

ParcelService

Registration

MailService

Feature TogglesBranch by Abstraction

ParcelService

Registration

MailService

ParcelService

Feature TogglesBranch by Abstraction

DB

DB

DB

DB

State ManagementBlue/Green Deployments

Surname Last_Name

ALTER TABLE … RENAME COLUMN

Surname

Last_Name Last_Name

Last_NameSurname

ALTER TABLE …ADD COLUMN Last_Name

CREATE TRIGGER …UPDATE … SET Last_Name = Surname

DROP TRIGGER …ALTER TABLE …

DROP COLUMN Surname

Last_Name

Last_Name

DROP TRIGGER …ALTER TABLE …

DROP COLUMN Surname

Summary

VersionControl

Build Build Release

DEV Continuous Integration

SmallTests

MediumTests

LargeTests

SmallTests

MediumTests

LargeTests

Artifact Repository

Target

DeploymentScript

backupstopinstallstart…

http://de.wikipedia.org/wiki/Datei:Yemen_Chameleon.jpg

One more thing

AXEL FONTAINESoftware Development Expert

@axelfontaineaxelfontaine.com

business@axelfontaine.com

Further reading:

http://axelfontaine.com/blog/final-nail.html

http://axelfontaine.com/blog/environment-detection.html

http://martinfowler.com/bliki/FeatureToggle.html

http://googletesting.blogspot.com/2010/12/test-sizes.html

http://blog.shinetech.com/2012/12/18/simple-session-sharing-in-tomcat-cluster-using-the-session-in-cookie-pattern/