gistfile1.coffee

# API examples
cache artist, 'fetch', success: ->
  #...
cache artworks, 'fetchUntilEnd', success: (artworks) ->
  res.render artworks: artworks
cache fair, 'fetchExhibitors', success: ->
  # ...

# Implementation
cache = (model, method, options) ->
  key = method + ':' + model.url()
  if res = client.get key
    return options.success(model, res)
  else
    model['method'] _.extend options,
      success: ->
        options.success arguments...
        client.set key, model.toJSON()
        client.expire key, model.toJSON()