limit_req_zone and limit_req in Nginx - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a rate limit zone named 'mylimit' with 10 requests per second.

Nginx

limit_req_zone $binary_remote_addr zone=mylimit:10m rate=[1]r/s;

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

A5

B50

C10

D20

Attempts:

3 left

💡 Hint

Common Mistakes

Using a rate value too low or too high for the example.

Forgetting to add 'r/s' after the number.

The rate parameter sets the allowed requests per second. Here, 10r/s means 10 requests per second.

2fill in blank

medium

Complete the code to apply the 'mylimit' zone to limit requests in the server block.

Nginx

limit_req zone=[1] burst=5 nodelay;

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

Amylimit

Bfastlimit

Cdefault

Dzone1

Attempts:

3 left

💡 Hint

Common Mistakes

Using a zone name that was not defined.

Leaving the zone name empty.

The zone name must match the name defined in limit_req_zone. Here, it is 'mylimit'.

3fill in blank

hard

Fix the error in the limit_req_zone directive to correctly set the zone size to 20 megabytes.

Nginx

limit_req_zone $binary_remote_addr zone=mylimit:[1] rate=10r/s;

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

A20m

B20k

C20g

D20

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the unit, which causes a syntax error.

Using incorrect units like 'k' or 'g' unintentionally.

The zone size must be specified with a unit. 'm' means megabytes, so '20m' is correct for 20 megabytes.

4fill in blank

hard

Fill both blanks to create a limit_req_zone using the client IP and apply a burst of 10 in the limit_req directive.

Nginx

limit_req_zone [1] zone=iplimit:10m rate=5r/s;
limit_req zone=iplimit burst=[2];

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

A$binary_remote_addr

B10

C5

D$remote_addr

Attempts:

3 left

💡 Hint

Common Mistakes

Using $remote_addr instead of $binary_remote_addr for the zone key.

Setting burst to a wrong number.

The variable $binary_remote_addr is used for client IP in binary form for efficiency. The burst value controls how many requests can exceed the rate temporarily.

5fill in blank

hard

Fill all three blanks to define a limit_req_zone with 15r/s rate, apply it with a burst of 7, and enable nodelay.

Nginx

limit_req_zone [1] zone=fastlimit:15m rate=[2]r/s;
limit_req zone=fastlimit burst=[3] nodelay;

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

A$binary_remote_addr

B15

C7

D$remote_addr

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up $remote_addr and $binary_remote_addr.

Using wrong numbers for rate or burst.

The zone key is $binary_remote_addr. The rate is 15 requests per second. The burst is set to 7 to allow some bursts without delay. The nodelay option sends excess requests immediately as errors.