Nodejs challenges for blockchain

Took a course and the instructor set up some challenges. Can you help? See below:

Fresh Keys Per Transaction This challenge is to implement a solution to a possible attack vector which tracks a public key’s usage throughout many transactions, and attempts to decrypt its private key. A solution to this, is to implement a wallet, that creates a fresh set of keys on every transactions. It’s a lot more overhead – but perhaps more secure.

Redis Clusters: To get servers communicating, they are all connecting to the same redis server. This has a limited number of connections. A solution is implement a cluster of redis urls as the connections increase. That way, a different redis server can handle other servers. The key is making sure that each redis server itself, communicates with each other, in a cluster fashion.