text: function RedisBackend(options) {
    this.client = options.client;
    this.key = options.key;
  }
  
  RedisBackend.prototype.write = function(str) {
    this.client.rpush(this.key, str);
  };
  
  RedisBackend.prototype.end = function() {};
  
  RedisBackend.prototype.clear = function(cb) {
    this.client.del(this.key, cb);
  };
  
  module.exports = RedisBackend;
  