Services and networking in Microservices - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the communication protocol used between microservices.

Microservices

service_client.connect(protocol='[1]')

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AHTTP

BFTP

CSMTP

DSSH

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing FTP or SMTP which are not typical for microservice communication.

Using SSH which is for secure shell access, not service communication.

Microservices commonly communicate over HTTP because it is simple and widely supported.

2fill in blank

medium

Complete the code to define the service discovery method in a microservices architecture.

Microservices

discovery_client = ServiceDiscovery(method='[1]')

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ADNS

Bmanual

Cbroadcast

Dstatic

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing manual or static which require fixed configurations.

Broadcast is not commonly used in microservices for discovery.

DNS-based service discovery allows services to find each other dynamically using domain names.

3fill in blank

hard

Fix the error in the load balancer configuration to distribute requests evenly.

Microservices

load_balancer.set_strategy('[1]')

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Aleast_connections

Brandom

Cround_robin

Dfirst_available

Attempts:

3 left

💡 Hint

Common Mistakes

Using random which can cause uneven load.

Choosing first_available which always picks the first server.

Round robin strategy distributes requests evenly by cycling through servers in order.

4fill in blank

hard

Fill both blanks to complete the network policy that allows traffic only from trusted services.

Microservices

network_policy = [1](source='trusted_services', action='[2]')

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AFirewallRule

Ballow

Cdeny

DAccessControl

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'deny' which blocks traffic instead of allowing it.

Using AccessControl which is not the correct class here.

The FirewallRule object defines rules, and 'allow' permits traffic from trusted sources.

5fill in blank

hard

Fill all three blanks to define a service mesh configuration with secure communication and retries.

Microservices

service_mesh = ServiceMesh(enable_tls=[1], retry_policy='[2]', circuit_breaker=[3])

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ATrue

Bexponential_backoff

CFalse

Dsimple

Attempts:

3 left

💡 Hint

Common Mistakes

Disabling TLS which reduces security.

Using simple retry policy which is less effective.

Enable TLS with True for secure communication, use exponential backoff for retries, and simple circuit breaker for fault tolerance.