In distributed systems, the Gossip protocol is one of the commonly used protocols.
It is designed to enable efficient information dissemination and data synchronization in large-scale systems.
Based on the exchange of information between nodes, the information is diffused throughout the system through random selection and regular updates.
The process is as follows:
Each node in the Gossip protocol communicates randomly with other nodes and exchanges information held by itself.
When a node receives information from other nodes, it merges that information into its own local storage and continues to propagate this information to other nodes.
Through constant interaction and information transfer, all nodes in the system are eventually able to get the same information.
It's not like a group of aunts who like to gossip, you say a word, I say a word. Gossip is passed from aunt to aunt.
No matter when the latecomer participates, he can get all the information of the gossip as soon as possible.
The Gossip protocol has the characteristics of decentralization, robustness, high scalability, and eventual consistency:
Decentralization: The Gossip protocol does not rely on centralized control nodes, and each node can communicate with other nodes independently.
Robustness: The nodes in the cluster are all peer-to-peer, so the failure of one node will not affect the propagation of information by other nodes.
Scalable: When data is transmitted, nodes do not wait for the ACK of messages, and the system can easily scale to millions of processes.
Convergent consistency: The exponential rapid propagation of information, so that all nodes have the latest data in a limited time
The Gossip protocol is mainly used in distributed systems such as distributed databases, distributed file systems, and peer-to-peer networks.
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