Bounded context mapping in Microservices - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a bounded context in a microservices architecture.

Microservices

class [1]Context:
    def __init__(self):
        self.services = []

Drag options to blanks, or click blank then click option'

AInventory

BDatabase

CUser

DPayment

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'Database' as a bounded context, which is a technical concern, not a domain context.

The User context represents a bounded context related to user management in microservices.

2fill in blank

medium

Complete the code to show how two bounded contexts communicate via an API gateway.

Microservices

class APIGateway:
    def __init__(self):
        self.contexts = [[1]Context(), OrderContext()]

Drag options to blanks, or click blank then click option'

AUser

BPayment

CShipping

DInventory

Attempts:

3 left

💡 Hint

Common Mistakes

Selecting a context unrelated to user management for this example.

The UserContext is included to represent one bounded context communicating through the API gateway.

3fill in blank

hard

Fix the error in the code that incorrectly maps bounded contexts.

Microservices

def map_contexts():
    contexts = ['User', 'Order', 'Payment']
    for context in contexts:
        if context == [1]:
            print('Handle user context')

Drag options to blanks, or click blank then click option'

A"Order"

B'User'

C'Payment'

DUser

Attempts:

3 left

💡 Hint

Common Mistakes

Comparing string elements without quotes causing a NameError.

The comparison must be with the string 'User' to match the list elements correctly.

4fill in blank

hard

Fill both blanks to correctly define a context map with upstream and downstream contexts.

Microservices

context_map = {
    'Order': {'upstream': [1], 'downstream': [2]
}

Drag options to blanks, or click blank then click option'

A'User'

B'Payment'

C'Inventory'

D'Shipping'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing upstream and downstream contexts or using unrelated contexts.

The Order context depends upstream on User and downstream on Payment contexts.

5fill in blank

hard

Fill all three blanks to complete the code that models a shared kernel between two bounded contexts.

Microservices

shared_kernel = {
    [1]: ['Address', 'ContactInfo'],
    [2]: ['Address', 'PaymentTerms'],
    [3]: ['Address']
}

Drag options to blanks, or click blank then click option'

A'UserContext'

B'OrderContext'

C'SharedEntities'

D'PaymentContext'

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing context names or misplacing the shared entities key.

The UserContext and OrderContext share entities like Address in the SharedEntities kernel.