PUB/SUB MODEL

model where nodes plays the role of publishers and subscribers, publisher send messages and subscribers subscribe to topics and receive messages based on the subscribed topics

flowchart TD
A((broker))
B[publisher]
C[subscriber]
D[subscriber]
B --publish X on topic --> A
C & D --subscribes on topics--> A
A --recive X--> C & D

PUB/SUB has the following properties

• space decoupling No need for the nodes to know each other
• time decoupling no need for the nodes to be connected at the same time
• synchronization decoupling no need for the nodes to halt the operation flow to receive communications

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