From Functional Languages to Functional Architectures

Slides of my presentation for Codemotion 2020 (https://events.codemotion.com/conferences/online/2020/codemotion-online-tech-conference/)

Software tends to be organised in a similar way in different levels: methods in classes, classes in packages, packages in projects and so on. The OO approach defined a good amount of this standards. However, there are companies building massive systems out there, handling numerous requests in a functional way. Could the functional approach have any impact on architecture? Lambda functions, immutable databases and short-life infrastructure are a few examples. In this session you will see how the functional paradigm has impacted software architecture at a much deeper level than one can imagine

Transcript

1. From Functional Languages to Functional Architectures Juliano Alves @vonjuliano juliano-alves.com October 20-21-22, 2020
2. Who am I? • Software Engineer, Searcher of perfect modularization, Lover of Functional Languages • The cool ones Scala, Clojure, Elixir • The "vintage" ones Java, C#, Python, Ruby @vonjuliano juliano-alves.com
4. What is software? "Software is representation of knowledge"
5. How do we organise that knowledge? "Software tends to be organised the same way, in different levels"
6. COMPUTATION INPUT OUTPUT
7. SERVICE A SERVICE B SERVICE C SERVICE D SERVICE E SERVICE F SERVICE G SERVICE H SERVICE I
8. COMPUTATION INPUT OUTPUT
9. They behave as Functions.
10. f(x) x y
12. Http Server http request http response
16. State
20. final var album = new ArrayList<Picture>(); album.add(picture1); album.add(picture2); System.out.println(album); // [pic1, pic2] album.set(1, picture3); System.out.println(album); // [pic1, pic3]
21. val album = List[Picture](picture1, picture2) println(album) // [pic1, pic2] album.updated(1, picture3) println(album) // [pic1, pic2] val newAlbum = album.updated(1, picture3) println(newAlbum) // [pic1, pic3]
22. State in environment
26. https://www.thoughtworks.com/insights/articles/understanding-clouds-significance
27. State in applications
29. SpaceTimeContinuumException
31. https://www.confluent.io/blog/build-streaming-etl-solutions-with-kafka-and-rail-data/
32. TOPOLOGY
33. Conclusion
34. "The way one express themselves affects their worldview." Sapir–Whorf hypothesis: https://en.wikipedia.org/wiki/Linguistic_relativity
35. From Functional Languages to Functional Architectures Juliano Alves @vonjuliano juliano-alves.com October 20-21-22, 2020 Thank you!