CDN caching rules in Azure - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the default caching behavior in Azure CDN.

Azure

cdnEndpoint.DefaultCacheBehavior = new CacheBehavior { CacheDuration = TimeSpan.FromSeconds([1]) };

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

A60

B3600

C86400

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 disables caching, which is not default.

Using very large values may cause stale content.

The default cache duration is set in seconds. 60 seconds is a common default for short caching.

2fill in blank

medium

Complete the code to add a caching rule that bypasses caching for query strings.

Azure

cdnEndpoint.CachingRules.Add(new CachingRule { QueryStringCachingBehavior = [1] });

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ABypassCache

BIgnoreQueryString

CUseQueryString

DCacheEveryQueryString

Attempts:

3 left

💡 Hint

Common Mistakes

Using IgnoreQueryString caches ignoring query strings, not bypassing.

UseQueryString caches based on query strings.

BypassCache means the CDN will not cache responses when query strings are present.

3fill in blank

hard

Fix the error in setting the cache duration to 2 hours in Azure CDN caching rule.

Azure

cachingRule.CacheDuration = TimeSpan.FromSeconds([1]);

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A3600

B7200

C120

D14400

Attempts:

3 left

💡 Hint

Common Mistakes

Using 120 seconds equals 2 minutes, not 2 hours.

Using 3600 seconds equals 1 hour.

2 hours equals 7200 seconds, so the cache duration must be set to 7200.

4fill in blank

hard

Fill both blanks to configure a caching rule that caches only if the request method is GET and the response status code is 200.

Azure

cachingRule.MatchConditions.Add(new RequestMethodCondition { Method = "[1]" });
cachingRule.MatchConditions.Add(new ResponseStatusCodeCondition { StatusCode = [2] });

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AGET

BPOST

C200

D404

Attempts:

3 left

💡 Hint

Common Mistakes

Using POST method is not cacheable by default.

Using 404 status code caches error pages.

GET requests with 200 status code are typically cached to serve valid content.

5fill in blank

hard

Fill all three blanks to create a caching rule that caches content for 30 minutes, ignores query strings, and caches only for GET requests.

Azure

var cachingRule = new CachingRule {
  CacheDuration = TimeSpan.FromSeconds([1]),
  QueryStringCachingBehavior = "[2]",
  MatchConditions = { new RequestMethodCondition { Method = "[3]" } }
};

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

A1800

BIgnoreQueryString

CGET

DBypassCache

Attempts:

3 left

💡 Hint

Common Mistakes

Using BypassCache disables caching for query strings.

Using POST method is not cacheable by default.

30 minutes is 1800 seconds, ignoring query strings means caching regardless of them, and caching GET requests is standard.