DEL and UNLINK for deletion in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to delete a key named 'user:1' using the DEL command.

Redis

DEL [1]

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

A'user:1'

Buser1

C"user:1"

Duser:1

Attempts:

3 left

💡 Hint

Common Mistakes

Quoting the key name causes a syntax error.

Using an incorrect key name.

The DEL command requires the key name without quotes in Redis CLI, so use user:1 directly.

2fill in blank

medium

Complete the code to delete multiple keys 'temp1' and 'temp2' using DEL.

Redis

DEL [1]

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

Atemp1 temp2

B'temp1', 'temp2'

C'temp1' 'temp2'

D"temp1" "temp2"

Attempts:

3 left

💡 Hint

Common Mistakes

Using commas between keys causes errors.

Quoting keys improperly.

DEL accepts multiple keys as separate arguments without quotes, like temp1 temp2.

3fill in blank

hard

Fix the error in the code to asynchronously delete the key 'cache:data' using UNLINK.

Redis

UNLINK [1]

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

A"cache:data"

Bcache:data

C'cache:data'

Dcache_data

Attempts:

3 left

💡 Hint

Common Mistakes

Quoting the key name.

Using underscores instead of colons in key names.

UNLINK requires the key name without quotes in Redis CLI, so use cache:data directly.

4fill in blank

hard

Fill both blanks to delete keys 'session1' and 'session2' asynchronously using UNLINK.

Redis

UNLINK [1] [2]

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

A'session1'

B'session2'

Csession2

Dsession1

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around keys.

Using commas.

UNLINK accepts multiple keys as separate arguments without quotes. Use session1 and session2.

5fill in blank

hard

Fill all three blanks to delete keys 'tempA', 'tempB', and 'tempC' synchronously using DEL.

Redis

DEL [1] [2] [3]

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

A'tempA'

BtempC

CtempB

DtempA

Attempts:

3 left

💡 Hint

Common Mistakes

Including keys not in the list.

Using quotes inconsistently.

DEL deletes multiple keys given as separate arguments without quotes. Use tempA, tempB, and tempC.