Reactive Applications

•

1 gefällt mir•1,408 views

Mike Bild

Technologie

la, la, la, la, la, la tonight
• quick
• hard
• dirty
Reactive

developers
• translating the reactive concepts into code
• use Rx / RxJS for example
• https://gist.github.com/MikeBild/6725003
yeah

why
• unstructured information
• real-time analytics and intelligence
• high user interaction and collaboration
• clusters vs. elasticity
• big-data vs. high-frequency

why
• historical analysis
• triggered ﬁnite state machines
• data synchronization
• more and more connected devices
• business domain complexity

working software
• is useful information output that
• ﬁts business domain
• ﬁts non-functional requirements

new challenges
• cause - effect
• time correlation
• information/data correlation

reactive manifesto
• it‘s a concept
• technology agnostic
• pros and cons
• event / message centric

4 building blocks
• Event-Driven
• Scalable
• Resilient
• Responsive and Interactive

react to ...
• events
• time
• load
• failures
• users

how
• RxJava | Java, Clojure, Scala, Groovy, JRuby
• Rx.NET | C#, F#,VB
• RxJS | JavaScript | NodeJS
• ReactiveCocoa | Objective-C
• RxCpp | C++
• more and more

glorious
• NetFlix
• GitHub for Windows / Mac
• more and more

events
• things that have happened
• events represent state changes
• data structure
• implicit and explicit information
• payload

event-driven
• events
• sources
• analytics & abstracting
• handling

event-driven
• highly decoupled
• ever non-blocking
• reactive from top to bottom
• input - processing - output
• asynchronous Event-Stream(s)

translate into code
• event sources structure
• create and compose
• transform, ﬁlter, aggregate, group, combine

scalable
• easy to expand or update on demand
• elastic scale out and scale in
• helps to manage risk

scalable
• location transparent
• message passing style
• abstraction for opportunities
• local context or distributed within same
semantic

translate into code
• composing
• scheduling
• tasks

resilient
• no downtime - be stale or compensate
• failures/errors as a ﬁrst class construct
• failures are business decisions
• react to manage failures
• monitor what possible

translate into code
• state
• resources
• catch errors
• retry
• compensation

responsive
• react to a stimulus
• high user to system interaction
• „always ready“

responsive
• permanent connection between user and
system
• collaborative environment
• real-time feedback

translate into code
• throttle, delay time
• analytics
• ﬁlter
• transform

design
• isolated / autonomous blocks
• async event-driven message passing
• location transparent
• ever responsive
• explicit failure management
@reactivemanifesto.org

conclusion
What does that mean here?
@reactivemanifesto.org

reactive applications
• Observable Models
• Event Streams
• Stateful Clients

reactive applications
• react from top to buttom to top
• observe data changes
• execute logic
• store state
• real-time update UI

thanks
• http://www.reactivemanifesto.org/
• https://github.com/Reactive-Extensions/RxJS-DOM
• https://github.com/Reactive-Extensions/RxJS
• http://mywebbasedcomputer.com/users/johngslater/tech/rx/bubbleDiagrams.html
• https://github.com/Netﬂix/RxJava
• https://github.com/blog/1127-github-for-windows
• https://netﬂix.com

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Reactive Applications

1. reactive applications new kids for your building blocks 09/2013 twitter.com/MikeBild

2. la, la, la, la, la, la tonight • quick • hard • dirty Reactive

3. developers • translating the reactive concepts into code • use Rx / RxJS for example • https://gist.github.com/MikeBild/6725003 yeah

4. why • unstructured information • real-time analytics and intelligence • high user interaction and collaboration • clusters vs. elasticity • big-data vs. high-frequency

5. why • historical analysis • triggered ﬁnite state machines • data synchronization • more and more connected devices • business domain complexity

6. working software • is useful information output that • ﬁts business domain • ﬁts non-functional requirements

7. new challenges • cause - effect • time correlation • information/data correlation

8. reactive manifesto • it‘s a concept • technology agnostic • pros and cons • event / message centric

9. 4 building blocks • Event-Driven • Scalable • Resilient • Responsive and Interactive

10. react to ... • events • time • load • failures • users

12. glorious • NetFlix • GitHub for Windows / Mac • more and more

13. events • things that have happened • events represent state changes • data structure • implicit and explicit information • payload

14. event-driven • events • sources • analytics & abstracting • handling

15. event-driven • highly decoupled • ever non-blocking • reactive from top to bottom • input - processing - output • asynchronous Event-Stream(s)

16. translate into code • event sources structure • create and compose • transform, ﬁlter, aggregate, group, combine

17. scalable • easy to expand or update on demand • elastic scale out and scale in • helps to manage risk

18. scalable • location transparent • message passing style • abstraction for opportunities • local context or distributed within same semantic

19. translate into code • composing • scheduling • tasks

20. resilient • no downtime - be stale or compensate • failures/errors as a ﬁrst class construct • failures are business decisions • react to manage failures • monitor what possible

21. translate into code • state • resources • catch errors • retry • compensation

22. responsive • react to a stimulus • high user to system interaction • „always ready“

23. responsive • permanent connection between user and system • collaborative environment • real-time feedback

24. translate into code • throttle, delay time • analytics • ﬁlter • transform

25. design • isolated / autonomous blocks • async event-driven message passing • location transparent • ever responsive • explicit failure management @reactivemanifesto.org

26. conclusion What does that mean here? @reactivemanifesto.org

27. reactive applications • Observable Models • Event Streams • Stateful Clients

28. reactive applications • react from top to buttom to top • observe data changes • execute logic • store state • real-time update UI

29. thanks • http://www.reactivemanifesto.org/ • https://github.com/Reactive-Extensions/RxJS-DOM • https://github.com/Reactive-Extensions/RxJS • http://mywebbasedcomputer.com/users/johngslater/tech/rx/bubbleDiagrams.html • https://github.com/Netﬂix/RxJava • https://github.com/blog/1127-github-for-windows • https://netﬂix.com

Reactive Applications

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