RENAME and RENAMENX in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to rename a key unconditionally in Redis.

Redis

RENAME [1] newkey

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

Anewkey

Brename

Coldkey

Dkey

Attempts:

3 left

💡 Hint

Common Mistakes

Using the new key name as the first argument instead of the old key name.

Confusing the command with RENAMENX.

The RENAME command renames the key oldkey to newkey unconditionally.

2fill in blank

medium

Complete the code to rename a key only if the new key does not exist.

Redis

RENAMENX [1] newkey

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

Anewkey

Boldkey

Ckey

Drename

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the old and new key names.

Using RENAME instead of RENAMENX when conditional rename is needed.

The RENAMENX command renames oldkey to newkey only if newkey does not already exist.

3fill in blank

hard

Fix the error in the command to rename a key only if the new key does not exist.

Redis

RENAMENX oldkey [1]

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

Aoldkey

Bkey

Crename

Dnewkey

Attempts:

3 left

💡 Hint

Common Mistakes

Using the old key name as the new key name.

Using the command name as an argument.

The second argument must be the new key name. Here, newkey is correct.

4fill in blank

hard

Fill both blanks to rename a key unconditionally from 'session1' to 'session2'.

Redis

RENAME [1] [2]

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

Asession1

Bsession2

Cuser1

Duser2

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the old and new key names.

Using keys that do not exist.

This command renames the key session1 to session2 unconditionally.

5fill in blank

hard

Fill all three blanks to rename a key only if the new key does not exist, from 'temp' to 'perm'.

Redis

RENAMENX [1] [2] # returns [3] if successful

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

Atemp

Bperm

C1

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong return value for success.

Swapping old and new key names.

The command renames temp to perm only if perm does not exist. It returns 1 on success.