Moneta rest client backend which works together with {Rack::MonetaRest} @api public
@param [Hash] options @option options [String] :url URL @option options [Faraday connection] :backend Use existing backend instance
(see Proxy#clear)
(see Proxy#delete)
(see Proxy#key?)
(see Proxy#load)
(see Proxy#store)
[Validate]