add redis database duct

[danfrankj]

Summary

Redis as a database Duct

[matthewwardrop]

Thanks for the patch Dan! I don't have much (if any) direct experience with Redis, but it seems like this implementation might be better implemented as a Restful instance? Or perhaps a new nosql class of database ducts? There are more exceptions to the rule here than there are similarities. What do you think?

[danfrankj]

Yeah @matthewwardrop this is a bit of a stretch to fit into the Database format... do you have any thoughts on how a NoSQL duct would be different from our Database ducts?

[matthewwardrop]

@danfrankj NoSQL databases are pretty free-form, and different implementations support different functionality. Do you think it makes sense to have a uniform API? If not, maybe we can just wrap other clients and provide the duct connection functionality, but otherwise expose the methods of the hosted client? Otherwise, perhaps we could commit to a simple api, like: "get", "set", "find"; and expose the wrapped client for more advanced functionality?

[danfrankj]

@matthewwardrop agreed - this is a bit of a stretch. I like the idea of a wrapper duct though. Will play around with that.