Proxy cache key in Nginx - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the proxy cache key using the request URI.

Nginx

proxy_cache_key [1];

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

A$http_user_agent

B$host

C$request_uri

D$remote_addr

Attempts:

3 left

💡 Hint

Common Mistakes

Using $host or $remote_addr as cache key causes cache misses for different URIs.

Using $http_user_agent is unrelated to the request URI.

The proxy_cache_key directive defines the key used to store cached responses. Using $request_uri ensures the cache key is based on the full request URI.

2fill in blank

medium

Complete the code to include the request method in the proxy cache key.

Nginx

proxy_cache_key [1]$request_uri;

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

A$request_method

B$host

C$remote_addr

D$http_cookie

Attempts:

3 left

💡 Hint

Common Mistakes

Using $host or $remote_addr does not reflect the HTTP method.

Using $http_cookie is unrelated to the request method.

Including $request_method in the cache key differentiates cache entries by HTTP method (GET, POST, etc.).

3fill in blank

hard

Fix the error in the proxy cache key to include the host and URI correctly.

Nginx

proxy_cache_key [1]$request_uri;

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

A$http_user_agent

B$request_method

C$remote_addr

D$host

Attempts:

3 left

💡 Hint

Common Mistakes

Using $request_method instead of $host causes incorrect cache keys.

Using $remote_addr or $http_user_agent does not represent the host.

The correct way to include the host and URI is by using $host followed by $request_uri. This ensures the cache key is unique per host and URI.

4fill in blank

hard

Fill both blanks to create a cache key that includes the host and the request method.

Nginx

proxy_cache_key [1][2]$request_uri;

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

A$host

B$request_method

C$remote_addr

D$http_cookie

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the order of variables can cause unexpected cache behavior.

Using $remote_addr or $http_cookie instead of host or method.

Combining $host and $request_method before $request_uri creates a cache key that varies by host and HTTP method.

5fill in blank

hard

Fill all three blanks to create a cache key that includes the host, request method, and a custom header 'X-User'.

Nginx

proxy_cache_key [1][2][3]$request_uri;

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

A$host

B$request_method

C$http_x_user

D$remote_addr

Attempts:

3 left

💡 Hint

Common Mistakes

Using $remote_addr instead of the custom header.

Forgetting the $http_ prefix for custom headers.

This cache key includes the host, HTTP method, and the custom header X-User (accessed as $http_x_user) before the request URI. This ensures caching varies by these values.