What is Redis - Interactive Quiz & Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set a key named 'color' with the value 'blue' in Redis.

Redis

SET color [1]

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

A'blue'

B"blue"

Cblue

Dblue;

Attempts:

3 left

💡 Hint

Common Mistakes

Adding quotes around the value causes errors.

Adding a semicolon at the end is not needed.

The Redis SET command stores a value for a key. The value should be given without quotes in the command line.

2fill in blank

medium

Complete the code to get the value of the key 'color' from Redis.

Redis

[1] color

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

AEXPIRE

BGET

CDEL

DSET

Attempts:

3 left

💡 Hint

Common Mistakes

Using SET instead of GET returns an error.

Using DEL deletes the key instead of retrieving.

The GET command retrieves the value stored for a given key in Redis.

3fill in blank

hard

Fix the error in the command to delete the key 'color' from Redis.

Redis

[1] color

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

ADEL

BREMOVE

CDELETE

DERASE

Attempts:

3 left

💡 Hint

Common Mistakes

Using REMOVE or DELETE causes syntax errors.

Using ERASE is not a Redis command.

The correct command to delete a key in Redis is DEL. Other options are invalid commands.

4fill in blank

hard

Fill both blanks to set a key 'count' with value 10 and then expire it after 60 seconds.

Redis

SET count [1]
EXPIRE count [2]

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

A10

B60

C100

D30

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the expiration time and value.

Using wrong numbers for expiration.

First, set the key 'count' to 10. Then use EXPIRE to make it expire after 60 seconds.

5fill in blank

hard

Fill all three blanks to increment the key 'visits' by 1, get its value, and then delete it.

Redis

INCR [1]
GET [2]
DEL [3]

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

Avisits

Bvisit

Cvisitor

Dvisit_count

Attempts:

3 left

💡 Hint

Common Mistakes

Using different key names causes errors or unexpected results.

Misspelling the key name.

All commands operate on the same key 'visits'. Increment, get, and delete must use the exact same key name.