persistentCH*PersistentConsumerHandler// Topic: WS2MS_Chat subscribed to consumers who are durable to MySQL consumers
historyCH*OnlineHistoryRedisConsumerHandler// This consumer aggregation message, Topic subscribed: ws2ms_chat, modify notification to msg_to_modify topic, the message is stored in redis, and then send a message to MS2PSChat Topic push, send messages to msg_to_mongo topic durability
historyMongoCH*OnlineHistoryMongoConsumerHandler// MongoDB batch insertion, delete the message in Redis after success, and process the TOPIC: msg_to_mongo of the deleted notification message deleted