expires = now + (5 * 60) + 10 all_users_key = "online-users/%d" % (now // 60) user_key = "user-activity
producer = new KafkaProducer<>(props); ProducerRecord<String, String> record = new ProducerRecord<>("user-activity
实时数据:stream://kafka/user-activity,提供实时用户行为流的快照。二进制数据:image://screenshot.png,LLM可以分析屏幕截图或图表。