Docker has seen huge uptake in the market but is it just a fad? Why do containers matter? Because, we are driving toward more and more frequent deployments of smaller and smaller software applications (e.g. microservices) and containers are a component in modern infrastructure that allows us to scale our production platforms 10x or more.

1. Docker, and Why Containers
Matter
Karl Matthias
Principal Systems Engineer

2. Constant Change
Mainframes Distributed systems Cloud servers

3. Constant Change
Mainframes
… with Monoliths
Distributed systems
… with Monoliths
… then SOA
Cloud servers
… with Monoliths
… with SOA
… then micro-services

4. Constant Change
Mainframes
… with Monoliths
Distributed systems
… with Monoliths
… then SOA
Cloud servers
… with Monoliths
… with SOA
… then micro-services
Waterfall Scrum XP Agile*

5. Driving the Change
“Our highest priority is
to satisfy the customer
through early and
continuous delivery of
valuable software.”
“Deliver working software
frequently, from a couple of
weeks to a couple of months,
with a preference to the shorter
timescale.”
– Principles behind the Agile Manifesto
(2001)Source: New Relic

6. Keep It Simple
“Simplicity–the art of maximizing the
amount of work not done–is essential.”
– Principles behind the Agile Manifesto (2001)

7. We Need Standards
“Any customer can have a car painted any color that he wants so long
as it is black.” – Henry Ford

8. We Need More Automation
Increasingly automated infrastructure

9. The Human Factor
“The first rule of any technology used in a business is
that automation applied to an efficient operation will
magnify the efficiency. The second is that automation
applied to an inefficient operation will magnify the
inefficiency.”
– Bill Gates

10. Where We Need To Scale
• Consistent, repeatable, testable builds
• Packaging
• Artifact delivery
• Application configuration
• Deployment
• Service discovery
• Capacity management
• Monitoring

11. A Docker Container
• A repeatable build artifact
• Resource limits
• Process Isolation
• Application configuration
• Metadata
• Networking
configuration

12. Application Infrastructure

13. Application Infrastructure

14. Application Infrastructure

15. Docker Ecosystem
Docker Engine is not a whole solution. Ecosystem includes:
• Docker Swarm
• Consul (Hashicorp)
• Mesos with Marathon (Mesosphere) or
Aurora (Twitter)
• Kubernetes (Google)
• Docker Data Center
• Dockergc (Spotify)
• Cadvisor (Google)
• … and many more

16. How Much of This is Hype?

17. Thanks!
Where to find me:
• Nitro: http://gonitro.com/
• “Docker: Up and Running”: http://goo.gl/pc5HQ3
• My Blog: https://relistan.com/
• Twitter: @relistan
• GitHub: relistan