Reinventing the wheel ... as a service

Slide 1

Slide 1 text

Reinventing the wheel … as a service Recurring trends in software development and architecture by Mario Fusco @mariofusco

Slide 2

Slide 2 text

Disclaimer: this talk is NOT about methodologies

Slide 3

Slide 3 text

Disclaimer: this talk is NOT about methodologies I have ethical principles …

Slide 4

Slide 4 text

Disclaimer: this talk is NOT about methodologies I have ethical principles … therefore I don’t shoot on the red cross

Slide 5

Slide 5 text

Early 2000s

Slide 6

Slide 6 text

Hierarchical DB vs. Relational

Slide 7

Slide 7 text

Hierarchical DB -> Tamino

Slide 8

Slide 8 text

Recurring trends

Slide 9

Slide 9 text

Unnecessary complexity

Slide 10

Slide 10 text

Straightforward simplicity

Slide 11

Slide 11 text

Straightforward simplicity

Slide 12

Slide 12 text

Simplify ... beyond the reasonable

Slide 13

Slide 13 text

The Markup Language War

Slide 14

Slide 14 text

The Markup Language War

Slide 15

Slide 15 text

The Norway Problem Shortcuts are great Except when they break horribly

Slide 16

Slide 16 text

No content

Slide 17

Slide 17 text

Simplicity is the ultimate sophistication. - Leonardo da Vinci

Slide 18

Slide 18 text

Simplicity is the ultimate sophistication. - Leonardo da Vinci Oversimplification is the ultimate idiocy. - me

Slide 19

Slide 19 text

A static typing system makes everything more complex isn’t it?

Slide 20

Slide 20 text

A static typing system makes everything more complex isn’t it? Dynamic Typing

Slide 21

Slide 21 text

Dynamic Typing The best way to discover that a duck cannot bark ...

Slide 22

Slide 22 text

Dynamic Typing The best way to discover that a duck cannot bark ... ... in production ...

Slide 23

Slide 23 text

Dynamic Typing The best way to discover that a duck cannot bark ... ... in production ... ... on a Friday evening

Slide 24

Slide 24 text

Fallacies of distributed computing ● The network is reliable ● Latency is zero ● Bandwidth is infinite ● The network is secure ● Topology doesn't change ● There is one administrator ● Transport cost is zero ● The network is homogeneous

Slide 25

Slide 25 text

The nocode / lowcode myth

Slide 26

Slide 26 text

The nocode / lowcode myth

Slide 27

Slide 27 text

Intelligent systems

Slide 28

Slide 28 text

Intelligent systems Changing random stuff until your program works is “hacky” and “bad coding practice”.

Slide 29

Slide 29 text

Intelligent systems Changing random stuff until your program works is “hacky” and “bad coding practice”. But if you do it fast enough it is “Machine Learning” and pays 4x your current salary.

Slide 30

Slide 30 text

Machine Learning ML is the thing suggesting to buy laundry detergent together with your new washing machine because they're statistically related ...

Slide 31

Slide 31 text

Machine Learning ML is the thing suggesting to buy laundry detergent together with your new washing machine because they're statistically related ... … or more often the one thinking that, since you want to buy a washing machine, you decided to start up a whole new laundry.

Slide 32

Slide 32 text

Why not Machine Learning + Symbolic Reasoning ? + ML to find statistical correlations and discover new patterns SR to filter away the ones not making sense under a business point of view SR to filter away the ones not making sense under a business point of view

Slide 33

Slide 33 text

Why not Machine Learning + Symbolic Reasoning ? + ML to find statistical correlations and discover new patterns SR to filter away the ones not making sense under a business point of view ML AI SR to filter away the ones not making sense under a business point of view

Slide 34

Slide 34 text

Why not Machine Learning + Symbolic Reasoning ? + ML to find statistical correlations and discover new patterns SR to filter away the ones not making sense under a business point of view ML AI SR to filter away the ones not making sense under a business point of view Your business domain knowledge lives here!

Slide 35

Slide 35 text

Often the right questions is not “should I use the old way or the new one?” ... … but “how can you combine the two and take the best of both?”

Slide 36

Slide 36 text

Pendulum of innovation ● Fat vs.Thin clients terminals ● Centralized vs. Distributed systems ● Outsourcing vs. Insourcing

Slide 37

Slide 37 text

Pendulum of innovation Mainframe

Slide 38

Slide 38 text

Pendulum of innovation Mainframe Desktop Innovation

Slide 39

Slide 39 text

Pendulum of innovation Mainframe Desktop Server side webapps Innovation Innovation

Slide 40

Slide 40 text

Pendulum of innovation Mainframe Desktop Server side webapps Applets Innovation Innovation Innovation

Slide 41

Slide 41 text

Pendulum of innovation Mainframe Desktop Server side webapps Applets Server side HTML rendering Innovation Innovation Innovation Innovation

Slide 42

Slide 42 text

Pendulum of innovation Mainframe Desktop Server side webapps Applets Server side HTML rendering Microfrontends Innovation Innovation Innovation Innovation Innovation

Slide 43

Slide 43 text

Concurrent Programming in Java Spiral of innovation

Slide 44

Slide 44 text

Concurrent Programming in Java Spiral of innovation Green threads

Slide 45

Slide 45 text

Concurrent Programming in Java Spiral of innovation Green threads Native threads

Slide 46

Slide 46 text

Concurrent Programming in Java Spiral of innovation Green threads Native threads Events ( actors / message passing )

Slide 47

Slide 47 text

Concurrent Programming in Java Spiral of innovation Green threads Native threads Events ( actors / message passing ) Reactive programming

Slide 48

Slide 48 text

Concurrent Programming in Java Spiral of innovation Green threads Native threads Events ( actors / message passing ) Reactive programming Virtual threads (Project Loom)

Slide 49

Slide 49 text

Rebranding

Slide 50

Slide 50 text

Cloud Cloud Computing is Mainframe Architecture which used virtualization in the 70s

Slide 51

Slide 51 text

No content

Slide 52

Slide 52 text

No content

Slide 53

Slide 53 text

No content

Slide 54

Slide 54 text

Remote calls / inter process communication ● RPC ● Corba ● SOAP ● REST ● gRPC

Slide 55

Slide 55 text

Modularization ● Code – Package – OSGi – JPMS ● Architecture – distributed computing – SOA – microservices

Slide 56

Slide 56 text

Software Engineering / Architecture “innovation” patterns ● (Over)Simplification

Slide 57

Slide 57 text

Software Engineering / Architecture “innovation” patterns ● (Over)Simplification ● Recurring trends – Pendulum – Spiral

Slide 58

Slide 58 text

Software Engineering / Architecture “innovation” patterns ● (Over)Simplification ● Recurring trends – Pendulum – Spiral ● Rebranding

Slide 59

Slide 59 text

… and what you can do about it ● Beware of stretched narratives and analogies

Slide 60

Slide 60 text

… and what you can do about it ● Beware of stretched narratives and analogies ● Beware of NIH syndrome

Slide 61

Slide 61 text

… and what you can do about it ● Beware of stretched narratives and analogies ● Beware of NIH syndrome ● Think with your head

Slide 62

Slide 62 text

… and what you can do about it ● Beware of stretched narratives and analogies ● Beware of NIH syndrome ● Think with your head ● Ask yourself: where have I seen this before?

Slide 63

Slide 63 text

Mario Fusco @mariofusco