How to get all 'key namespaces' (object types) in redis?

@hal.littel 

To get all 'key namespaces' (object types) in Redis, you can use the TYPE command along with the SCAN command to scan through all keys in the database.

Here is an example of how you can achieve this using the Redis CLI:

1. Use the SCAN command to iterate over all keys in the database. You can use the following command to get all keys:

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SCAN 0

1. Once you have all keys, iterate over each key and use the TYPE command to get the type of each key. You can use the following command to get the type of a key:

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TYPE <key_name>

1. Store the types of each key in a list or hash map for further processing.

By following these steps, you can retrieve and store all 'key namespaces' (object types) in Redis.