Zero downtime releases and Deployment Strategies and Low-risk release types

1. Zero Downtime releases through DevOps
Continuous Delivery
Murughan Palaniachari

2. Who am I?
Murughan Palaniachari
Heading DevOps @ Euromonitor
Website/Blog
https://elevate-org.com/
LinkedIn
https://in.linkedin.com/in/murughan
Twitter
@Murughan_P

3. Must-read DevOps books
https://www.linkedin.com/pulse/must-read-books-transform-organization-murughan-palaniachari
https://www.linkedin.com/pulse/my-learnings-from-book-goal-eliyahu-m-goldratt-murughan-palaniachari

4. Painful and Stressful
Time-consuming, tedious, and error-prone
Long weekend releases
Overnight releases
Costly process
Sometimes Boring
Rollback is difficult
Too many people involved
Manual process
Too many hand-offs
Releases are

5. John Willis: https://www.edx.org/course/introduction-devops-transforming-linuxfoundationx-lfs161x

6. How high performing organizations Release code

7. http://itrevolution.com/devops-handbook

8. Zero Downtime release
Jez Humble : https://continuousdelivery.com/

9. Expand / Contract
• Don’t change exiting
object or the schema of
existing objects in
production.
• Instead of overwriting
static content, we put new
static content side by side.
• Basically version it.
• You don’t need to rollback,
you point to old version.
Jez Humble : https://continuousdelivery.com/

10. Blue-green deployments
• Deploying complete
application.
• Install all the components
app, service, database
twice
• Old version in blue slice
• New version in green slice
• Change router to point to
Green port
Jez Humble : https://continuousdelivery.com/

11. Canary Releasing
• Facebook and Netflix uses this
technique.
• Release to Internal employee.
• Then deploy to next level of users.
• Then push to everyone.

12. Cluster Immune System
• Monitor certain critical system
metrics like user usage of
system.
• While canary release, Immune
system checks key metrics if
they out of band.
• If any high statistics then
rollback to old version.

13. Feature Toggle
• All the major features is
already in live 6 months
before.
• Helps in A/B testing.
• Configuration will
toggle the features.

14. Dark Launch
• Facebook messenger
release
• Features available in
Live but not visible to
user.
Jez Humble : https://continuousdelivery.com/

15. Thank you
Murughan Palaniachari
Heading DevOps @ Euromonitor
https://elevate-org.com/
https://in.linkedin.com/in/murughan
@Murughan_P
murughan1985@gmail.com