Deleting keys from a Redis database is a common operation in cases where we no longer need the values stored against those keys. These situations include when data becomes outdated or irrelevant, or when clearing out the cache to free up space.
To delete keys in Redis using Python, you need to use the
delete function provided by the
redis-py library. Here's a simple example:
In this example, we first establish a connection with the local Redis server. We then set a key
key1, and finally remove it using the
If there are multiple keys that we want to delete, we can do so like this:
delete method allows deleting single or multiple keys.
While deleting keys in Redis through Python, it is best to verify first if the key exists before deletion to avoid unnecessary operations. Also, bulk deletion of keys can be more efficient than deleting them one by one.
Q: What happens if I try to delete a key that does not exist?
delete method simply ignores non-existent keys and does not throw an error.
Q: Does the
delete method return anything?
A: Yes, it returns the number of keys that were removed.