Refactoring is the process of improving a software system's internal structure without altering its external behavior, enhancing maintainability, extensibility, and readability. It is essential for improving design, maintaining speed in development, and finding bugs, particularly when adding functions, fixing bugs, or during code reviews. The document discusses these concepts as presented at a software architecture conference on October 27, 2018.

1. What, Why, When Refactoring
Adrian Adendrata
Software Engineer at DOKU

2. ONE WEEK ONE MONTH ONE YEAR
DEVELOPMENT PHASE
Software Architecture Conference – 27 October 2018

3. ONE WEEK ONE MONTH ONE YEAR
DEVELOPMENT PHASE
Software Architecture Conference – 27 October 2018

4. What

5. What Is Refactoring?
Refactoring is process of changing a software system is
such a way that it does not alter the external behavior of code yet
improve its internal structure.
● Maintainability
● Extensibility
● Readability
Software Architecture Conference – 27 October 2018

6. Why

7. Improves the Design
of Software.
Without refactoring, the design of the
program will decay
Software Architecture Conference – 27 October 2018

8. Software Easier to
Understand.
The trouble is that when you are trying to
get the program to work, you are not
thinking about that future developer
Software Architecture Conference – 27 October 2018

9. Helps You
Program Faster.
A good design is essential to
maintaining speed in software
development.
Software Architecture Conference – 27 October 2018

10. Helps You Find Bugs.
“I'm not a great programmer. I'm just a
good programmer with great habits”
-Kent Beck
Software Architecture Conference – 27 October 2018

11. When

12. When Adding a
new Function.
Adding this feature would be easy.
Software Architecture Conference – 27 October 2018

13. When You Fix a
Bug.
Software Architecture Conference – 27 October 2018

14. When you Code
Review.
Reviews help more experienced
developers pass knowledge to less
experienced people
Software Architecture Conference – 27 October 2018

17. Refactoring: Improving the
Design of Existing Code (Object
Technology Series)
Martin Fowler (Author),
Kent Beck (Author),
John Brant (Author),
William Opdyke (Author),
Don Roberts (Author)

19. THX