def heartbeat(time)
      RRRSpec.redis.setex(RRRSpec.make_key(key, 'heartbeat'), time, "alive")
      RRRSpec.redis.sadd(RRRSpec.make_key('rrrspec', 'worker'), key)
    end
def heartbeat(time)
      RRRSpec.redis.setex(RRRSpec.make_key(key, 'heartbeat'), time, "alive")
      RRRSpec.redis.sadd(RRRSpec.make_key('rrrspec', 'worker'), key)
    end
Public: Maintain heartbeat