lib/flickraw/api.rbをlib/flickraw/api_ext.rbな感じでcache。キャッシュ先でMarshal.dump/loadしてます。

gistfile1.rb

# lib/flickraw/api.rb

def call(req, args={}, &block)
  rest_path = FlickRaw.secure ? REST_PATH_SECURE : REST_PATH
  http_response = @oauth_consumer.post_form(rest_path, @access_secret, {:oauth_token => @access_token}, build_args(args, req))
  process_response(req, http_response.body)
end

gistfile2.rb

# lib/flickraw/api.rb

def cache_key(req, args)
  URI.encode((req + args.to_s).gsub(/[\s\t=>'",\{\}]/, "/").gsub(/\/+/, "/"))
end
    
def call(req, args={}, &block)
      
  cache_key = cache_key(req, args)
  result = CacheServer.instance.get(cache_key)
  if result.blank?
    rest_path = FlickRaw.secure ? REST_PATH_SECURE : REST_PATH
    http_response = @oauth_consumer.post_form(rest_path, @access_secret, {:oauth_token => @access_token}, build_args(args, req))
    result = process_response(req, http_response.body)
    CacheServer.instance.push(cache_key, result)
  end
  result
      
end