ZADD for adding scored members in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a member with a score to a sorted set.

Redis

ZADD myset 10 [1]

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

Ascore

Bmember

C10

Dmember1

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the score after the member name.

Using a number as the member name.

The ZADD command syntax is ZADD key score member. Here, member is the name of the member to add.

2fill in blank

medium

Complete the code to add a member with score 15 to the sorted set named 'players'.

Redis

ZADD players 15 [1]

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

Amember1

Bscore

Cplayer1

Dplayer

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the score and member positions.

Using 'score' as the member name.

The command requires the member name after the score. Here, player1 is the member being added.

3fill in blank

hard

Fix the error in the command to add member 'user42' with score 20 to 'ranking'.

Redis

ZADD ranking 20 [1]

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

Aranking

Buser24

C20

Duser42

Attempts:

3 left

💡 Hint

Common Mistakes

Using the score as the member name.

Using the key name as the member.

The member name must be a string representing the member to add. Here, user42 is correct.

4fill in blank

hard

Fill both blanks to add member 'alice' with score 30 to the sorted set 'users'.

Redis

ZADD [1] [2] alice

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

Ausers

Bmembers

C30

Duserset

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the member name in the wrong place.

Duplicating the score number.

The ZADD command syntax is ZADD key score member. The first blank is the key name users. The second blank is the score 30.

5fill in blank

hard

Fill all three blanks to add member 'bob' with score 25 to the sorted set 'leaders'.

Redis

ZADD [1] [2] [3]

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

Aleaders

B25

Cbob

Dmembers

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the score and member positions.

Using the wrong key name.

The correct syntax is ZADD key score member. Here, leaders is the key, 25 is the score, and bob is the member.