Cache bypass conditions in Nginx - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to bypass cache when the request method is POST.

Nginx

if ($request_method = [1]) {
    set $bypass_cache 1;
}

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

APOST

BGET

CHEAD

DPUT

Attempts:

3 left

💡 Hint

Common Mistakes

Using GET instead of POST, which is safe to cache.

Using PUT which is less common for cache bypass.

POST requests usually change data, so we bypass cache for them.

2fill in blank

medium

Complete the code to bypass cache when the request has a cookie named 'session'.

Nginx

if ($http_cookie ~* [1]) {
    set $bypass_cache 1;
}

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

A"user_id"

B"session"

C"auth"

D"token"

Attempts:

3 left

💡 Hint

Common Mistakes

Using cookie names unrelated to sessions like 'user_id'.

Forgetting to quote the cookie name in regex.

The 'session' cookie usually means the user is logged in, so cache should be bypassed.

3fill in blank

hard

Fix the error in the code to bypass cache when the query string contains 'nocache=1'.

Nginx

if ($arg_nocache [1] 1) {
    set $bypass_cache 1;
}

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

A=

B!=

C==

D~

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' which assigns instead of compares.

Using '~' which is for regex matching.

Use '==' to compare variables in nginx if statements.

4fill in blank

hard

Fill both blanks to bypass cache when the request method is POST or the cookie 'session' exists.

Nginx

if ($request_method = [1] || $http_cookie ~* [2]) {
    set $bypass_cache 1;
}

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

APOST

BGET

C"session"

D"user"

Attempts:

3 left

💡 Hint

Common Mistakes

Using GET instead of POST for method.

Using wrong cookie name like 'user'.

POST requests and presence of 'session' cookie both require cache bypass.

5fill in blank

hard

Fill all three blanks to bypass cache when the request method is POST, or the cookie 'session' exists, or the query string 'nocache=1' is present.

Nginx

if ($request_method = [1] || $http_cookie ~* [2] || $arg_nocache [3] 1) {
    set $bypass_cache 1;
}

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

APOST

B"session"

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '==' for query string comparison.

Wrong cookie name or method.

All three conditions correctly check for cache bypass triggers.