The present invention relates to message transmission/reception between a publisher and a subscriber (P/S) based on gossiping, and more particularly, to a message communication system for ensuring deadline constraint in a structure of message transmission/reception between the publisher and the subscriber (P/S) based on gossiping. A system for message communication between a publisher and subscriber based on gossiping while ensuring deadline constraint according to the present invention includes a plurality of consumer clients and a plurality of brokers for supplying messages to the clients, wherein, each broker communicates with at least one neighbor broker, piggybacks information about a two-dimensional arrangement of causal relationship when transmitting the message to the neighbor broker, to transmit the message, and piggybacks information about a one-dimensional arrangement of causal relationship when transmitting the message to the client, to transmit the message.
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