Keynote: Architecting for Continuous Delivery (Pivotal Cloud Platform Roadshow)

5. Warner Music: Software Factories Warner Software Factory Platform • New applications and major updates - Before: 6 months, team of 10 developers - After: 6 weeks, same team - Speed/Agility: 400% faster on new platform - HR Hard Savings: $1.1M per application update delivered © Copyright 2014 Pivotal. All rights reserved. 5

8. Diversity of Clients In January 2014, mobile devices accounted for 55% of Internet usage in the United States. Apps made up 47% of Internet traffic and 8% of traffic came from mobile © Copyright 2014 Pivotal. All rights reserved. 8 browsers. http://money.cnn.com/2014/02/28/technology/mobile/mobile-apps-internet/

9. Physical/Virtual Pivotal CF Infrastructure Applications Monoliths Microservices Continuous Delivery Software Factories Feedback Rapid Iteration Horizontal Scale Diversity of Clients © Copyright 2014 Pivotal. All rights reserved. 9

11. Twelve Factors • One Codebase/Many Deploys • Explicit Isolated Dependencies • Config via Environment • Attached Backing Services • Separate Build/Release/Run • Stateless Processes • Export Services via Port Bindings • Scale Out via Processes • Disposable Instances • Dev/Prod Parity • Logs == Event Streams • Admin Tasks == Processes http://12factor.net © Copyright 2014 Pivotal. All rights reserved. 11

12. New Architectural Constraints • Pivotal CF optimizes for 12 Factor Linux applications • Microservices: a radical departure from traditional monolithic applications • In both cases, the enterprise is forced to “think different.” © Copyright 2014 Pivotal. All rights reserved. 12

18. Monolithic Architectures • Complex / Easy • Modularity Dependent Upon Language / Frameworks • Change Cycles Tightly Coupled / Obstacle to Frequent Deploys • Inefficient Scaling • Can Be Intimidating to New Developers • Obstacle to Scaling Development • Requires Long-Term Commitment to Technical Stack © Copyright 2014 Pivotal. All rights reserved. 18

20. Microservice Architectures • Simple / Hard • Modularity Based on Component Services • Change Cycles Decoupled / Enable Frequent Deploys • Efficient Scaling • Individual Components Less Intimidating to New Developers • Enables Scaling of Development • Eliminates Long-Term Commitment to Technical Stack © Copyright 2014 Pivotal. All rights reserved. 20

21. Conway’s Law © Copyright 2014 Pivotal. All rights reserved. 21 Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure. Melvyn Conway, 1967 http://martinfowler.com/articles/microservices.html#OrganizedAroundBusinessCapabilities

22. Organize Around Business Capabilities HTML JavaScript MVC Service Siloed Application Architectures © Copyright 2014 Pivotal. All rights reserved. 22 Data Access Service UI Specialists Middleware Specialists DBAs Business Capability Business Capability Business Capability Siloed Functional Teams Cross-functional Teams Microservice Architectures http://martinfowler.com/articles/microservices.html#OrganizedAroundBusinessCapabilities

23. Partitioning Strategies • By Noun (e.g. product info service) • By Verb (e.g. shipping service) • Single Responsibility Principle (http://programmer.97things.oreilly.com/wiki/index.php/ The_Single_Responsibility_Principle) • Bounded Context (http://martinfowler.com/bliki/ BoundedContext.html) © Copyright 2014 Pivotal. All rights reserved. 23

27. Choreography over Orchestration © Copyright 2014 Pivotal. All rights reserved. 27 https://www.flickr.com/photos/gabrielsaldana/5896491978 https://www.flickr.com/photos/chrisbrenschmidt/2223763842 http://martinfowler.com/articles/microservices.html#SmartEndpointsAndDumbPipes

29. Paying for your lunch… • Significant Operations Overhead • Substantial DevOps Skills Required • Implicit Interfaces • Duplication of Effort • Distributed System Complexity • Asynchronicity is Difficult! • Testability Challenges © Copyright 2014 Pivotal. All rights reserved. 29

30. You must be this tall to use Microservices… • RAPID PROVISIONING • BASIC MONITORING • RAPID APPLICATION DEPLOYMENT • DEVOPS CULTURE © Copyright 2014 Pivotal. All rights reserved. 30 https://www.flickr.com/photos/gusset/3723961589 http://martinfowler.com/bliki/MicroservicePrerequisites.html

32. Platform Features • Environment Provisioning • On-Demand/Automatic Scaling • Failover/Resilience • Routing/Load Balancing • Data Service Operations • Monitoring • Distributed/Versioned Config • Service Registration/Discovery • Routing/Load Balancing • Service Integration • Fault Tolerance • Asynchronous Messaging © Copyright 2014 Pivotal. All rights reserved. 32

41. A NEW PLATFORM FOR A NEW ERA