Sometimes there might be a need to delete multiple keys that match a specific pattern in Redis. This is particularly common when you want to clean up or reset your cache, or when certain data becomes irrelevant.
In Python, the 'redis' library can be used to interact with a Redis database, including deleting keys based on patterns.
First, installation of redis library if not already installed:
Example 1: Deleting keys matching a specific pattern:
In this example, the
scan_iter function finds all keys that match the given pattern ('pattern*' in this case), and for each of these keys, the
delete method is called to remove them from the Redis database.
scan_iterto avoid blocking the database for too long.
deletemethod, which will indicate whether the deletion was successful.
Q: Can I use wildcards in my pattern?
A: Yes, the pattern can include wildcard characters. For example, 'user:' will match all keys that start with 'user:', and '' will match all keys.