Health checks in HLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a health check endpoint that returns a success status.

HLD

GET /health [1] 200 OK

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

Aresponds_with

Breturns

Csends

Doutputs

Attempts:

3 left

💡 Hint

Common Mistakes

Using verbs like 'responds_with' or 'sends' which are not standard in endpoint definitions.

The health check endpoint should return a 200 OK status to indicate the service is healthy.

2fill in blank

medium

Complete the code to specify the type of health check that verifies database connectivity.

HLD

HealthCheck: type = [1]

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Adatabase

Bdisk

Cmemory

Dcpu

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing database check with disk or memory checks.

The health check type for verifying database connectivity is database.

3fill in blank

hard

Fix the error in the health check configuration to correctly set the check interval.

HLD

check_interval = [1] seconds

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

A5

Bfive_seconds

C'5'

Dfive

Attempts:

3 left

💡 Hint

Common Mistakes

Using words like 'five' or strings like '5' instead of numeric 5.

The interval should be a numeric value without quotes or words, so 5 is correct.

4fill in blank

hard

Fill both blanks to complete the health check response indicating service status and uptime.

HLD

response = {"status": "[1]", "uptime": [2]

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Ahealthy

Bunhealthy

Cuptime_seconds

Duptime

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'unhealthy' for status when service is healthy.

Using incorrect key names for uptime.

The status should be healthy to indicate good service, and uptime is the correct key for uptime value.

5fill in blank

hard

Fill all three blanks to define a health check function that returns true if the service is healthy and false otherwise.

HLD

def is_healthy():
    if [1] == 'ok' and [2] < [3]:
        return True
    else:
        return False

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

Aservice_status

Bresponse_time

Ctimeout_threshold

Derror_count

Attempts:

3 left

💡 Hint

Common Mistakes

Using error_count instead of response_time or timeout_threshold.

The function checks if service_status is 'ok' and if response_time is less than timeout_threshold to decide health.