How to make technical decisions? As presented on EPAM Java Meetup - 2018-08-28

2. Examples
MongoDB MySQL
Hibernate JDBC
Maven Gradle
implement reuse

3. your WORST technical decision here

4. … let me help
own persistency layer
in PHP
2
non-compatible
components
~ 300 dependencies
each

5. We all have war stories
implement own
framework
&
use it in the project

6. COST OF A BAD DECISION

7. STICKY COGNITIVE NOISE
TECHNICAL DEBT ACCIDENTAL COMPLEXITY

9. SOLVES THE RIGHT PROBLEM

11. EASY TO USE MAINTAINABLE
FAST NO SURPRISES

12. Design
Runtime
Learning
Curve

13. Design
maturityAPI
feature
richnessinterfacing
(replaceable)
simplicity

14. Learning
Curve
quality
docsusability
fast feedback team expertise

15. Runtime
feature richness
no SPOF
stability
quality
of
feedback
performance
technical constraints
logging
monitoring
exceptions
debugging

16. Design
maturityAPI
feature
richness
interfacing
(replaceable)
simplicity
Runtime no SPOF
stability
quality
of
feedback
performance
technical constraints
logging
monitoring
exceptions
debugging
Learning
Curve
quality
docsusability
fast feedback
team expertise

18. Maturity

19. Technical Constraints & Feature Richness

20. Design & Simplicity & API & Stability

21. Stability

22. Performance

24. Breadth-First

26. LEAN
SET-BASED DESIGN
LAST RESPONSIBLE MOMENT

27. Set-Based Design

28. Last Responsible Moment
• parallel dependencies
• interfaces & abstractions
• feature toggles
• deprecation

29. MISSING KEY INGREDIENT

31. Decision Making
• Group can be smarter / dumber
• Use your intuition
• Remember: breadth-first
• Be CALM & COLLABORATIVE

33. in

34. HOW >WHAT
IT’S NOT TECHNICAL

35. Thank You!
Oresztész Margaritisz
@gitaroktato
gitaroktato
https://www.linkedin.com/in/oresztesz
gitaroktato

36. References
• How we decide (book summary)
• Choose Boring Technology
• Set-based design
• How to make technical decisions given very little time?
• Stackoverflow Insights
• Analyzing code with SonarQube in Docker
• Google Trends
• Software Engineering Wisdom
• Lean Tools: Making Decisions
• Lean Tools: Options Thinking
• EPAM Quality Attributes and Metrics