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2015 CD Dependency Diagram

This is the diagram Bryan Finster created to decompose the CD problem for the original pilot.

flowchart TD
%% ========= Nodes =========
%% Top practices
CDD["Contract Driven Development"]:::behavior
BDD["Behavior Driven Development"]:::behavior

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Feature Flag Decision Tree

graph TD
    Start[New Code Change] --> Q1{Is this a large or<br/>high-risk change?}
    
    Q1 -->|Yes| Q2{Do you need gradual<br/>rollout or testing<br/>in production?}
    Q1 -->|No| Q3{Is the feature<br/>incomplete or spans<br/>multiple releases?}
    
    Q2 -->|Yes| UseFF1[✓ USE FEATURE FLAG<br/>Enables safe rollout<br/>and quick rollback]

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Product Manufacturing vs Product Development

Manufacturing	Development
Each item is identical	Each delivery is unique
The value of the item is known	The value of the change is uncertain
The effort to build the item is known	The effort to develop is uncertain
The raw materials have value	The raw materials have no value

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# Perform a similarity search between the embedding of the query and the embeddings of the documents
query = "How big should a story be?"
results = vector_search.similarity_search(query)

print(results[0].page_content)

Stories should be sliced vertically. That is, the story should be aligned such that it fulfills a consumer request

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Misunderstanding the Users' Need

PO Misunderstands	Dev Team Misunderstands	QA Team Misunderstands	Rework Needed
False	False	False	False
False	False	True	True
False	True	False	True
False	True	True	True
True	False	False	True
True	False	True	True

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Effect of Handoffs on the Value Stream

Feature Defined and Sent to Cross-Functional Team

Team Misunderstands	Rework Needed
True	True
False	False

Feature Defined and Sent to Dev & QA Teams

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Scenario: Swarming user stories as a team
Given we have a story we can complete in less than 3 days


When we decompose the story
And we agree that any team member with the technical skills can work on the story
Then the team member should be able to complete the story in less than 3 days
And the team member should not need to ask clarifying questions
And the team memeber should have all information needed to test the story

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Scenario: A story is ready to start
Given we have a story to refine
When we decompose the story
And we agree that any team member with the technical skills can work on the story
Then the team member should be able to complete the story in less than 3 days
And the team member should not need to ask clarifying questions
And the team memeber should have all information needed to test the story

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let perfect = false;
let percentValue = 100;

while (!perfect) {
  percentValue = percentValue/2;
}

shipIt(percentValue);

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it('Should not return null if both numbers are integers' () => {
  addWholeNumbers(2, 2);
  addWholeNumbers(2, '2');
  addWholeNumbers(1.1, 0);
})