[mike255x]

You can use any REDIS service on the cloud. An example: https://redislabs.com/. If you are on Heroku there are multiple REDIS plugins.

[maerF0x0]

REDIS doesnt use http protocol by default, but looks like maybe this could work. http://webd.is/

[THRWAWA20160222]

Thanks. What if you don't want to manage anything. Is there an interest or a market for "Hashtable as a service" ?