We’ve all been there and done that. A project starts small, and all of a sudden turns into a two-headed monster. What if you could break it (your project and not the monster) down by functionality, into smaller self-contained services that allowed you to develop, test and deploy without interfering with the rest of your other services? “You’re telling me fibs!” you say? In this presentation, Marcos Placona will tell you the secrets of SOA (Service Oriented Architecture) and show you how to build robust, scalable and lean services that provide incredible functionality as well as being very low maintenance. He will share his experiences with using such approaches, and tell you the pros (and cons) with doing things this way, as well as taking you through some common tools that can be used to make you sail through that ginormous enterprise application you’ve been working on with common dialects such as JSON, REST, HTTP and message queues. If this sounds like a familiar problem, you’d best attend!

1. SOA
Service Oriented Architecture
How to break your beast project down into services and enjoy a happy life
#DROIDCON2013

3. Who the… ?
Marcos Placona is….
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a principal software engineer @ WRI
a [your-technology-here] whore
an author
a committer in various
Open Source projects
#SOAROCKS

5. What is it?
● SOA is a development pattern based on
collections of discrete software modules
called services
● Every service is built to be independent and
interoperable
● Good practices are at core when using SOA
#SOAROCKS

7. Fact #1
You have probably used SOA in some shape or
form before and haven’t even realized it.
#SOAROCKS

8. Fact #2
How about I tell that you once your services
have been built, all you need to care about is
how your apps will work?
Photo by: Brad Frost

9. Fact #3
Your services will rock!
And maybe you won’t even have to write
them...
#SOAROCKS

10. Simple and functional
Photo by: http://quotesgeek.com/bruce-lee-quotes/

11. Or just a mess...
Photo by: http://thedailywtf.com/Articles/The_Customer-Friendly_System.aspx

12. And before you know...
#SOAROCKS

13. Time to fight back!
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OO techniques
Refactoring
TDD
Reusability
Decoupling

14. And then what?
#SOAROCKS

15. Choose your flavour...
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NodeJS (Express)
Ruby (Sinatra)
Python (Flask)
Java (Spark)
Scala (Scalatra)
Groovy (Ratpack)
Whatever floats your boat...
#SOAROCKS

16. And then what?
Basket
Reviews
Payments
Accounts
Recommendations

17. Extract the functionality into services
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Reviews
Basket
Reviews
Accounts
Payments
Recommendations
Payments
Accounts
#SOAROCKS
Basket
Recommendations

18. The analogy
SOA is like Lego
HTTP sticks it all together

19. But there’s more...
You can also “stitch” things together using
Enterprise queuing systems (via AMQP or
SOAP).
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RabbitMQ
OpenAMQ
ActiveMQ
ZeroMQ
Amazon SQS

20. Reviews service overview
#SOAROCKS

21. Reviews Features
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Scalable
Isolated
Fully unit tested
Decoupled
Reusable
Interoperable
{ json }

22. Code is easy… #EZPZLMNSQZ
http://bit.ly/review-sample

23. All about the right tools

24. But lookout!

25. Keep an eye on the bigger picture

26. Cache on every layer
But don’t try to solve a problem that doesn’t
exist, only improve what needs improving.
#SOAROCKS

27. Test in isolation

28. Keep versions
#SOAROCKS

30. Keep small
Build big!
#SOAROCKS

31. And have a happy life!
Thank you!
#SOAROCKS