Apple Power Macintosh 6100
PowerPC 601 @ 60Mhz, max 72 MB RAM
MIKI Yoshihito - https://www.
fl
ickr.com/photos/mujitra/13981566927/
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On the software side?
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No content
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Today
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Software is everywhere
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Software changes the world
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How to develop
truly great software?
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Structure
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Design Patterns
Elements of Reusable
Object-Oriented Software
by Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides
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Refactoring
Improving the Design of Existing Code
by Martin Fowler
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Feedback Cycles
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JUnit
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Test-Driven Development
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Test Driven Development
By Example
by Kent Beck
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User Feedback
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"Real Artists Ship"
Steve Jobs
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Agile Software Development
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Extreme Programming
Explained
by Kent Beck
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Distributed Systems
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APIs and Evolution
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Eat Your Own Dogfood
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Test at scale
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"Hello World" always work
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Massive amounts of data
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public long calculate(List orders) {
long sum = 0;
for(int i = 0; i < orders.size(); i++) {
sum += orders.get(i).getPrice();
}
return sum;
}
What is the problem here?
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Complexity Matters
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t(n) = n6 vs. t(n) = 2n
103 machines in parallel
109 operations per second
n = 100
1s universe doesn’t
exist long enough
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"software is getting slower more rapidly
than hardware is becoming faster"
Wirth’s Law
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Back to the beginning
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Running on
Motorola 68030 processor @ 32Mhz, 4 MB RAM
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What comes next?
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Vulnerabilities
CVEs are now part of your daily life
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GenAI
(probably more ML + LLM than intelligence)
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Decarbonization
super important
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"The best way to predict the
future is to invent it"
Alan Kay
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Thank You
for listening
Martin Lippert
@martinlippert