Continuous delivery from the trenches

Continuous Delivery from the Trenches

By @leenasn

Agenda● Tale of two customers

● Overview of the Process

● Our learnings

Story 1

http://www.multunus.com/portfolio/micro-loan-processing-platform/

Originator & Underwriter




Loan Processing




Payment Processing



Manual + Some Automation

First release of the product

- Close to 4 million worth of loans till date

- An average of 4 loan officers


Passive monitoring and alerting




Originator - Work in Progress



Story 2

http://www.multunus.com/portfolio/end-end-mobile-device-management-solution-health-media-enterprise/



Stats

Released to 1 clinic Automated the Device Setup

Extended to Linux Media Players

Team● 1-3 pair of programmers

● One Product Manager

● One Business Analysts/Tester

● Works closely with the business team

● Every commit gets deployed to staging

● Production updates multiple times a week

● Gradual rollout for major features

● Weekly production pushes for Android Apps

● Slowly moving to a Continuous Deployment for Webapps

Continuous Delivery

“Continuous Delivery is a software development discipline where

you build software in such a way that the software can be

released to production at any time.”

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



Focus on Delivering Business Value

Team understanding the users

Software development is a human activity

Two pillars

● Respect for people

● Continuous Improvement

Technical Practices

Continuous Integration

“Continuous integration (CI) is the practice, in software

engineering, of merging all developer working copies to a shared

mainline several times a day.”

https://en.wikipedia.org/wiki/Continuous_integration

Mainline Development

Feature Toggles

Test Driven Development

Automated Deployments

Deployment Pipeline

Non-Technical Practices

Collaboration, Communication

Pairing

Timeboxing instead of Estimating

http://www.multunus.com/blog/2013/04/estimating-to-timeboxing-our-journey/



User in User stories

Retrospectives and Cause Effect Analysis

Quick overview of Tools

Continuous Integration a Dollar A Day

Courtesy: James Shore

http://www.jamesshore.com/Blog/Continuous-Integration-on-a-Dollar-a-Day.html

http://www.jamesshore.com/Blog/Continuous-Integration-on-a-Dollar-a-Day.html

Monitoring

Deployment

https://github.com/multunus/chef-repo



Static Analysis

Communication

Challenges

Speed vs Quality

Resiliency

http://www.multunus.com/blog/2014/08/production-outages-part-2/



The “managers”

Absence Blindness

How long?




Summary

Done = Released

Work in small batches

http://cnmnewz.com/wp-content/uploads/2014/06/Golden-Gate-Bridge-with-Net-AP.jpg



Quick overview

@leenasn / [email protected]

Office hours http://bit.ly/leena-officehours

Playbook http://bit.ly/our-playbook

mailto:[email protected]

http://bit.ly/leena-officehours

http://bit.ly/our-playbook

http://bit.ly/our-playbook

References

Continuous delivery from the trenches

Software

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