Redis String Command

Set the string value of a key. The key is created if it does not exist already. If the key already exists, then no matter what the type of the existing data is, it will be overwritten. When a value is set(without any expiration time) for an existing key, then the existing TTL will be removed(if any TTL is already set).

Get/retrieve the string value that is set for the key. It only works if the saved value is of type string. This command returns nil if the does not exist.