1. Why Reactive Architecture Will Take Over the World Steve Pember GReach, 2014

2. A Few Questions 3. Have you ever... Wondered why your companys codebase is all in one repo? 4. Have you ever... thought why are there so many #@$!% tables in this database? 5. Have you ever... Dreaded executing the unit test suite? 6. Have you ever... Gone through a major refactoring of your app? 7. Have you ever... Gone on an whale hunt on the codebase just to add a new feature? 8. With Traditional Monolithic Architecture, You Can Reach MVP quickly. 9. The entirety of the applications functionality is in one convenient location. 10. But thats it. 11. Wont scale? WAIT! 12. ...Sure, but theres more to it. 13. Normal? 14. Architecture choice is more important than any framework 15. Architecture Choice is More Important Than Any Framework* *And We all Know that Only JVM Frameworks / Languages would even be considered 16. Enter SOA 17. ... which creates faster, leaner code ... 18. ... which results in rapid long-term development time... 19. ... and easier code maintainability... 20. ... which saves you Money. 21. Scale micro services instead of whole systems 22. Each service can be written with the methods and technologies best suited to it 23. Separation of Concerns is a Good Thing. 24. Also, its fun! l 25. However. 26. Theres some non-trivial upfront time investing in a service communication format. 27. Intra-Service communication has a cost, particularly if its synchronous. 28. Becoming Reactive 29. 4 Principles of Reactive 30. Event-Driven 31. Scalable 32. Resilient 33. Responsive 34. No One correct Reactive Architecture 35. An application must be reactive from top to bottom. -The Reactive Manifesto 36. Small, event-based services 37. Inter-service communication via asynchronous Events 38. Message Brokers 39. Route Messages asynchronously through a message queue when data needs processing 40. RESTful Messages and Events... ... Consumers only operate on data in the Message. 41. Add additional nodes to handle load without additional configuration 42. Plus Additional Decoupling on 43. But which Broker to pick? 44. Rabbit MQ Language Agnostic (additional decoupling) Message Persistence Message Recovery 45. A Few Examples 46. https://blog.twitter.com/2013/new-tweets-per-second-record-and-how 47. Change was Needed 48. Monolithic: 200-300 requests/ sec /host Reactive: 10 - 20K requests / sec / host 49. During the 2010 World Cup, Twitter hit a record of 3283 TPS 50. Average 5700 TPS Dynamically scale to 143,199 TPS 51. With 5x - 12x fewer machines than before 52. What about NodeJS? 53. Node Has Increased Popularity of Event-Based Programming 54. JS Is Not A Great Server-Side Language 55. Toy Garbage Collection No Proper Package Imports (for now) Quirky Interpreter Tricky scoping rules No Numerical Precision 56. Groovylang has the power to compete 57. Build More Event-Based Apps on the JVM 58. Spread Awareness 59. An Anti-Case Study 60. Source: https://www.paypal-engineering.com/2013/11/22/node-js-at-paypal/ 61. Source: https://www.paypal-engineering.com/2013/11/22/node-js-at-paypal/ 62. 2X FASTER!!! . 63. Architecture choice is more important than any framework 64. Dont be like PayPal 65. Be Like Netflix 66. Thank You! 67. Image CreditsComplexity (pipes): http://www.flickr.com/photos/bhophoto/384574407/ Simple Pipeline: http://tierracos.com/our-companies/tierra-pipeline/ Highway: http://farnorthdallas.advocatemag.com/wp-content/uploads/2013/04/882349_500402383328407_539732406_o.jpg Homer & doughnuts: http://thechurchillreview.blogspot.com/2012/10/feeling-terror-too-young-aka-kiddie.html Tom Brady: http://stamperdad.wordpress.com/category/tom-brady/ Telephone Exchange Operator: http://fineartamerica.com/featured/telephone-exchange-1920s-granger.html People in Queue: http://www.guardian.co.uk/money/2010/mar/23/dole-queue-jobseekers-online Cookie Monster: http://muppet.wikia.com/wiki/Cookie_Monster_Through_the_Years Scrooge McDuck: http://smallbusiness.uprinting.com/how-pennies-are-hurting-small-business/ Too Many Cooks: http://www.ecommercesystems.com/featured-articles/cooks-kitchen-driving-ecommerce-business/ Clustered Macs: http://www.uiowa.edu/mihpclab/micg.html Resuscitate: http://www.dailymail.co.uk/health/article-2034160/Do-resuscitate-Theyre-fateful-words-meaning-doctors-wont-try-save-you- collapse-hospital.html Iron Man: http://images.wikia.com/marvelmovies Mail Sorting: http://riversidechamber.files.wordpress.com Twitter Logo & app chart: https://blog.twitter.com/engineering Modern Server Farm: http://bookriot.com/2013/03/26/book-less-libraries-and-other-contemporary-realities/ Grey World: http://upload.wikimedia.org/wikipedia/commons/d/d0/BlankMap-World-1ce.png Monolith: http://sofakingwetarrededd.blogspot.com/2012_12_01_archive.html Star Trek: http://www.gifbin.com/984064 Reactive Manifesto: http://www.reactivemanifesto.org/ Cheetah: http://www.livescience.com/21944-usain-bolt-vs-cheetah-animal-olympics.html Buzzword Bingo: http://www.amsterdamadblog.com/columns/buzzword-bingo/ Businessman meditating: http://www.huffingtonpost.co.uk/2013/07/09/meditation-successful-businessmen_n_3567694.html Chaos Monkey: http://luckyrobot.com/netflix-chaos-monkey-keeps-movies-streaming/ NodeJS: http://misclassblog.com/interactive-web-development/node-js/ Turtles: http://people.wcsu.edu/pinout/herpetology/tcarolinei/29366343.EasternBoxTurtle2.jpg, http://www.huffingtonpost.com/2013/04/26/24-tiny-turtles-who-need-a-reality-check_n_3134793.html, http://www.ecology.com/2012/05/23/world-turtle-day/