Why case studies illustrate practical decisions in Microservices - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a microservice that handles user data.

Microservices

def get_user_data(user_id):
    return database.[1](user_id)

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

Afetch

Bquery

Cdelete

Dupdate

Attempts:

3 left

💡 Hint

Common Mistakes

Using methods that modify or delete data instead of retrieving it.

The method query is used to retrieve data from the database in microservices.

2fill in blank

medium

Complete the code to send a request from one microservice to another.

Microservices

response = service_client.[1]('GET', '/orders')

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Asend

Bfetch

Cpost

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Using methods that are not standard HTTP request methods.

The request method is commonly used to send HTTP requests between microservices.

3fill in blank

hard

Fix the error in the microservice configuration to enable service discovery.

Microservices

service_registry = [1]('http://registry.local')

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AServiceRegistry

BDiscoveryService

CServiceDiscovery

DRegistryService

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing service discovery with service registry classes.

The ServiceRegistry class is used to register and discover services in microservice architectures.

4fill in blank

hard

Fill both blanks to implement a circuit breaker pattern in microservices.

Microservices

circuit_breaker = CircuitBreaker([1]=5, [2]=60)

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Afailure_threshold

Btimeout

Cretry_limit

Dreset_timeout

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing retry limits with failure thresholds or timeouts.

The failure_threshold sets how many failures trigger the breaker, and reset_timeout sets how long before retrying.

5fill in blank

hard

Fill all three blanks to create a load balancer configuration for microservices.

Microservices

load_balancer = LoadBalancer(strategy=[1], max_connections=[2], health_check=[3])

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

A'round_robin'

B100

CTrue

D'least_connections'

Attempts:

3 left

💡 Hint

Common Mistakes

Using string values where numbers or booleans are expected.

The least_connections strategy balances load by active connections, 100 limits max connections, and True enables health checks.