How to upload to redis a python's dict of dicts ? (dataframe --> redis)

Question

I have to upload on redis a pandas's dataframe with a column as unique key(timestamp). To do this, I've created a dict in python like this:

dict0 = {1431036000: {'col1': '08-05-2015',   'col2': 1.934,  'col3': 905.0} ,
        1431122400: {'col1': '09-05-2015',   'col2': 2.004,  'col3': 700.0}, ..........}

and I started a redis client with this

db0 = redis.Redis(host = xxxx, port = 6379, db=0)

1. What function should I use to upload dict0 to db0, so I can get all values(with labels) by making a get(timestamp)?
2. Having another dict (dict1) that I want to upload to another database, is it correct to do this to have the two databases separated ? Cause dict0 and dict1 may have same keys.

db1 = redis.Redis(host = xxxx, port = 6379, db=1)

If you have suggestions for doing it (dataframe->redis) better let me know, thank you in advance.