10th Class Agile Lean Software Development

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Questions and Answers

What is a major consequence of task switching for developers?

Reduced productivity (correct)

Enhanced focus

Improved code quality

Increased collaboration

Which impact do defects have in software development?

They increase costs. (correct)

They improve team morale.

They enhance customer satisfaction.

They increase development speed.

What is a risk associated with manual code changes?

Greater collaboration

Higher risk of errors (correct)

More secure controls

Increased traceability

What do creational design patterns focus on?

The way objects are created Signup and view all the answers

Behavioral design patterns are primarily concerned with:

Algorithms and the assignment of responsibilities Signup and view all the answers

What is an effect of bugs in software that are not tested thoroughly?

Prioritization of bug fixes Signup and view all the answers

Which option is a practice that aids in version control management?

Git cherry-pick Signup and view all the answers

What is the main goal of structural design patterns?

To explain how to assemble objects and classes Signup and view all the answers

What is the impact of partially done work in software development?

It leads to longer cycle times and increased context switching. Signup and view all the answers

Which waste relates to the effort of rediscovering previously known information in software development?

Relearning Signup and view all the answers

Which of the following is a consequence of adding extra features beyond what is necessary?

It increases maintenance costs and the risk of defects. Signup and view all the answers

What is described as transferring information or tasks between team members, causing potential inefficiencies?

Handoffs Signup and view all the answers

How do delays impact the software development process?

They prolong the development cycle and may lead to missed deadlines. Signup and view all the answers

Which waste can accumulate due to shifting focus from one task to another?

Task Switching Signup and view all the answers

What leads to miscommunication and potential loss of information in a development process?

Handoffs Signup and view all the answers

Which type of waste is characterized by having tasks or features that are not completed and can lead to technical debt?

Partially Done Work Signup and view all the answers

Study Notes

Class #10 Topics

Topics covered in class #10 include Design Patterns, Code Management, and 7 Wastes.

Agile Lean Software Development

Optimize the whole: A key aspect of Agile Lean Software Development.
Eliminate Waste: A core principle, aiming to remove unnecessary steps and resources.
Create Knowledge: Focus on learning and improving processes, ensuring knowledge is shared and accessible.
Build Quality In: Building quality from the start, rather than fixing problems later.
Fast Delivery: Delivering working software quickly.
Delay in Making Decisions: A significant waste to be avoided when making timely decisions.
Empower Your Team: Give team members the autonomy and responsibility to make decisions.

7 Wastes in Software

Partially Done Work: Unfinished tasks accumulating, leading to slower cycles, increased context switching, and integration issues.
Extra Features (Gold Plating): Adding unnecessary features not requested by the customer, increasing complexity, maintenance costs, and risk of defects.
Relearning: Rediscovering information already known, wasting time and resources, leading to inconsistent practices.
Handoffs: Transferring information or tasks between team members or departments. This can cause miscommunication, delays, knowledge loss, and inefficiency.
Delays: Waiting time that slows the development process (waiting for approvals, feedback, or resources), delaying deadlines and bottlenecks.
Task Switching: Frequently switching between tasks or projects, reducing productivity, increasing errors, and causing burnout.
Defects: Bugs or errors requiring rework and corrections. This reduces software quality, increases costs, and damages customer satisfaction

Partially Done Work

Description: Features or tasks that are started but not completed.
Impact: Longer cycle times, increased context switching, potential integration issues.
Example: A team starts a new feature but is interrupted to fix a bug, leaving the feature incomplete, accumulating technical debt.

Extra Features (Gold Plating)

Description: Adding more features than strictly necessary or requested by the customer.
Impact: Increased complexity, higher maintenance costs, and greater risk of defects.
Example: Adding extra features to a user profile page (background themes, fonts, colors) that are not requested by users.

Relearning

Description: Rediscovering already known information that isn't documented or shared properly.
Impact: Time and resource waste, leading to inconsistent practices.
Example: A developer struggles to fix a bug in a module without proper documentation, needing to rediscover its functionality.

Handoffs

Description: Transferring information or tasks between team members or departments.
Impact: Miscommunication, delays, loss of information.
Example: Feature transfer from requirements gathering to design, implementation, and testing stages, each handoff involves knowledge transfer.

Delays

Description: Waiting time during development (approvals, feedback, resources).
Impact: Longer development cycles, missed deadlines, bottlenecks.
Example: A feature waiting days for code review due to reviewer's busy schedule.

Task Switching

Description: Frequent shifts between tasks/projects.
Impact: Reduced productivity, increased errors, and potential burnout.
Example: A developer working on multiple projects simultaneously, switching between them, diminishing focus.

Defects

Description: Bugs or errors needing fixing.
Impact: Compromised software quality, increased costs, and disappointed customers.
Example: Released feature with significant bugs identified after testing, needing rework.

Code Management and Branching

Manual Code Changes: Problems with manual code changes include increased error risk, poor collaboration, lack of traceability, and insufficient security measures.
Git Flow - Diagram: A graphical representation of the branching strategy (Master, Pull Request, Discussion, Deploy). Showing branching for Hotfixes, Release Branches, and Develop Feature Branches.

Design Patterns

Types of Design Patterns: The categories include Creational (object creation), Behavioral (communication of objects), and Structural (compiling into larger structures).

Singleton Design Pattern.

A design pattern where a class only has one instance. Preventing multiple instantiations of a class, ensuring that a class is instantiated only once.

Factory Design Pattern

A design pattern that creates objects without specifying the exact class of object that will be created.

Adapter Design Pattern

A design pattern where an object is converted from one interface to another, making it compatible with other objects.

Bridge Design Pattern

A design pattern that decouples an abstraction from its implementation, making it flexible and independent from each other.

Chain of Responsibility

A design pattern where multiple objects are chained together, handling requests in a defined sequence.

Observer Design Pattern

A design pattern where one object (subject) notifies other objects (observers) about any changes it might have, informing other objects of changes.

Other aspects

The image or graphics from the slides give information on different applications of the particular design, not just definitions.

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Description

This quiz covers key concepts from class #10, focusing on Agile Lean Software Development principles such as optimizing processes, eliminating waste, and empowering teams. You'll explore the importance of building quality in from the start and delivering software quickly while avoiding common pitfalls. Test your knowledge on the 7 wastes in software development and learn how to improve efficiency in your projects.