XGROUP DESTROY
Introduction and Use Case(s)
The XGROUP DESTROY
command is used in Redis to delete a consumer group from a specific stream. This is particularly useful when you want to clean up or reconfigure your stream processing setup by removing outdated or unused consumer groups.
Syntax
XGROUP DESTROY <key> <groupname>
Parameter Explanations
<key>
: The name of the stream key from which the consumer group will be deleted.<groupname>
: The name of the consumer group to be destroyed.
Return Values
(integer) 1
: Indicates that the consumer group was successfully deleted.(integer) 0
: Indicates that the consumer group did not exist.
Code Examples
dragonfly> XGROUP CREATE mystream mygroup $ MKSTREAM
OK
dragonfly> XGROUP DESTROY mystream mygroup
(integer) 1
dragonfly> XGROUP DESTROY mystream nonexistinggroup
(integer) 0
Best Practices
- Always ensure that the consumer group you intend to delete is no longer needed, as this action cannot be undone.
- It’s good practice to check if the consumer group exists before attempting to delete it to avoid unnecessary commands.
Common Mistakes
- Trying to delete a consumer group from a non-existent stream will result in an error.
- Misspelling the stream key or group name can lead to unexpected results.
FAQs
What happens if I try to delete a consumer group that doesn’t exist?
You will receive a return value of (integer) 0
, indicating that the consumer group does not exist.
Can I recreate a consumer group after deleting it?
Yes, you can use the XGROUP CREATE
command to create a new consumer group with the same name after deletion.