Redis as a State Backend

[Chirag Dewan via user]

Hi,
I was looking at the FLIP-254: Redis Streams Connector and I was wondering if 
Flink ever considered Redis as a state backend? And if yes, why was it 
discarded compared to RocksDB? 
If someone can point me towards any deep dives on why RocksDB is a better fit 
as a state backend, it would be helpful.
Thanks,Chirag