Agile Architecture BITKOM Software Summit 2013

Talk about concepts of Agile Architecture done at BITKOM Software Summit 2013 in Frankfurt am Main, Germany. It focuses on the JavaScript stack with AngularJS, Express, Node.js and MongoDB an the influence of it on the way we think about software architecture.

Transcript

1. AGILE ARCHITECTURE Adam Boczek @nativeagile @codecentric BITKOM Software Summit 2013 | Frankfurt am Main | Germany
2. AGILE ARCHITECTURE OXYMORON? CONTROLLED CHAOS OPEN SECRET DARK LIGHT LIVING DEAD . . .
3. Adam Boczek Agile Coach | Enterprise Architect xing.com/profiles/Adam_Boczek @nativeagile adam.boczek@codecentric.de http://codecentric.de @codecentric https://www.xing.com/net/pri1f221ex/agilearchitecture
4. AGILITYINCORPORATES THE IDEAS OF FLEXIBILITY, BALANCE, ADAPTABILITY, AND COORDINATION UNDER ONE UMBRELLA. (WIKIPEDIA)
5. ARCHITECTUREREPRESENTS THE FUNDAMENTALORGANIZATION OF A SYSTEM EMBODIED IN ITS COMPONENTS, THEIR RELATIONSHIPS TO EACH OTHER, AND TO THE ENVIRONMENT AND THE PRINCIPLES GUIDING ITS DESIGN AND EVOLUTION. (IEEE1471 2007)
6. ARCHITECTUREREPRESENTS THE SIGNIFICANT DESIGN DECISIONS THAT SHAPE A SYSTEM, WHERE SIGNIFICANT IS MEASURED BY COST OF CHANGE. (BOOCH 2006)
7. FLEXIBLE STRUCTURE AGILE ARCHITECTURE
8. FLEXIBLE STRUCTURE OR BEHAVIOR? AGILE ARCHITECTURE
9. FLEXIBLE STRUCTURE AND BEHAVIOR. AGILE ARCHITECTURE
10. AGILE ARCHITECTURE IS: BUSINESS-CENTRIC SIMPLE-AS-POSSIBLE EVENT-DATA-DRIVEN SINGLE-RESPONSIBILITY-BASED CLOUD-ORIENTED MULTI-PARADIGM FLEXIBLE STRUCTURE
11. CLEAN ARCHITECTURE AND DIP* Enterprise Business Rules Application Business Rules Interface Adapters Frameworks & Drivers Controllers Ext. Interfaces Processes Entities * Robert C. Martin (Uncle Bob), Dependency inversion principle AGILE ARCHITECTURE IS BUSINESS-CENTRIC
12. DOMAIN DRIVEN DESIGN* AGILE ARCHITECTURE IS BUSINESS-CENTRIC Problem Space (Business) Solution Space (IT) * http://domainlanguage.com/ddd/ Agile Architecture Ubiquitous Language Core and sub domains Bounded contexts Entities and value objects Aggregates Factories and repositories Services and modules Domain Events Context Mapping
13. AGILE ARCHITECTURE IS SIMPLE-AS-POSSIBLE * http://simplearchitectures.blogspot.de/2011/10/sip-complexity-model.html controlling complexity Through Partitioning & Reduction Subclasses of a partition should be constructed with the synergistic equivalence relation. Complexity Number Of the System States dice are homomorphic representatives of variables in software systems and paths in business processes.
14. EVENT SOURCING & BIG DATA CAPTURE ALL CHANGES TO AN APPLICATION STATE AS A SEQUENCE OF EVENTS* * http://martinfowler.com/eaaDev/EventSourcing.html Event Source T1 | State 1 Event Source T2 | State 2 Event Source T3 | State 3 BIG Data Repository Event T1 | State 1 Event T2 | State 2 Event T3 | State 3 AGILE ARCHITECTURE IS EVENT-DATA-DRIVEN
15. PURE LAYERING AGILE ARCHITECTURE IS SINGLE-RESPONSIBILITY-BASED * MV* = MVP, MVC or MVVM DOES ALL THE CLIENT JOB, MV* Presentation Layer Business Layer Persistence Layer DOES ALL THE BUSINESS JOB DOES ALL THE DB JOB No business stuff No business stuff No Presentation stuff
16. CLEAN HYBRID ARCHITECTURE Ext. Interfaces Entities Controllers Use Cases Entities Controllers Use Cases Entities Controllers Use Cases Active Record Command Query Responsibility Segregation Domain Driven Design AGILE ARCHITECTURE IS SINGLE-RESPONSIBILITY-BASED
17. SCALING OUT STRATEGY* AGILE ARCHITECTURE IS CLOUD-ORIENTED * http://spacebug.com/scale-out-versus-scale-up-html/ RUNNING THE APPLICATION ON MANY HOSTS SCALING UP STRATEGY
18. JAVASCRIPT ONE LANGUAGE FITS ALL* JavaScript is a prototype-based scripting language with dynamic typing and has first-class functions. It is a multi-paradigm language, supporting object-oriented, imperative, and functional programming styles. Coding Testing Operating * http://en.wikipedia.org/wiki/JavaScript AGILE ARCHITECTURE IS MULTI-PARADIGM
19. JSON ONE FORMAT FITS ALL* AGILE ARCHITECTURE IS MULTI-PARADIGM JSON or JavaScript Object Notation, is a text-based open standarddesigned for human-readable data interchange. Derived from the JavaScript scripting language, JSON is a language for representing simple data structures and associative arrays, called objects. Calling Persisting Transforming * http://en.wikipedia.org/wiki/JSON
20. MEAN STACK (JAVASCRIPT & JSON) NodeJSis an event-driven I/O server-side JavaScript environment based on Google’s V8 engine. ExpressJS is a node.js web application framework. MongoDB is A superb No-SQL database. AngularJS is framework to create one-page dynamic apps. AGILE ARCHITECTURE IS MULTI-PARADIGM
21. * MV* = MVP, MVC or MVVM DOES ALL THE CLIENT JOB, MV* ANGULARJS Presentation Layer Business Layer Persistence Layer DOES ALL THE BUSINESS JOB NODEJS, EXPRESSJS DOES ALL THE DB JOB MONGODB No business stuff No business stuff No Presentation stuff MEAN STACK (JAVASCRIPT & JSON) IN ACTION
22. AGILE ARCHITECTURE SUPPORTS: SELF-DIRECTING SELF-OPTIMIZING SELF-HEALING FLEXIBLE BEHAVIOR
23. HATEOAS/REST AGILE ARCHITECTURE SUPPORTS SELF-DIRECTING Consumer IS Directing* Producer/ Backend var response = producer.foo(); if (response.status == X) { producer.foo1(); } else { producer.foo2(); }; Consumer/ Client Hypermedia as the Engine of Application State Representational state transfer RPC API Producer is directing* var response = producer.foo(); // next_foo() is foo1() or foo2() // producer decides what is right response.next_foo(); Consumer/ Client Producer/ Backend Rest HATEOAS * Pseudo-source-code for demonstration purposes only
24. LOAD BALANCER & CACHE AGILE ARCHITECTURE SUPPORTS SELF-OPTIMIZING QUERY OPTIMIZER
25. AGILE ARCHITECTURE SUPPORTS SELF-HEALING The microcapsules release a healing agent when the material is damaged* * http://www.bbc.co.uk/news/science-environment-19781862 SELF-HEALING MATERIALS SOFTWARE ERROR DETECTION AND SOFTWARE HEALING AGENTS MEAN SELF-HEALING SOFTWARE SYSTEMS
26. THE BEHAVIOR OF A SYSTEM THAT FOLLOWS AGILE ARCHITECTURE CAN BE CALLED ARCHITECTURAL INTELLIGENCE ABILITY OF THE SYSTEM TO DIRECT, OPTIMIZE, AND HEAL ITSELF
27. FLEXIBLE STRUCTURE AND BEHAVIOR. AGILE ARCHITECTURE BUSINESS-CENTRIC SIMPLE-AS-POSSIBLE EVENT-DATA-DRIVEN SINGLE-RESPONSIBILITY-BASED CLOUD-ORIENTED MULTI-PARADIGM SELF-DIRECTING SELF-OPTIMIZING SELF-HEALING
28. https://www.xing.com/net/pri1f221ex/agilearchitecture Adam Boczek Agile Coach | Enterprise Architect xing.com/profiles/Adam_Boczek @nativeagile adam.boczek@codecentric.de http://codecentric.de @codecentric