Redis cache

[adityagupta-9900]

Hello!!
I wish to contribute to this repo by adding the feature of redis cache. Here I was thinking of using redis-go for it and I've already begun and have done some progress into it.
I'd appreciate if I could get some more clarity as to how you would like to bring redis cache option to the existing version.

[miconda]

Thanks for considering to contribute to this project!

Which is the redis-go project that you want to use? I looked at the page listing go redis clients and I could not spot it:

• https://redis.io/clients#go

From implementation point of view, now there is a caching that stored the public keys on a folder based on the URL. As a first step would be storing in a redis database and getting them from there. It can be controlled via a cli parameter that sets the redis server url -- if this parameter is provided, then caching is done with redis.