def cache_options(sql = nil)
      options = Influxer.config.cache.dup
      options[:expires_in] = (options[:cache_now_for] || 60) if sql =~ /\snow\(\)/
      options
    end
def cache_options(sql = nil)
      options = Influxer.config.cache.dup
      options[:expires_in] = (options[:cache_now_for] || 60) if sql =~ /\snow\(\)/
      options
    end
if sql contains 'now()' set expires to 1 minute or :cache_now_for value
 of config.cache if defined