A message delivery method and related device

Abstract

The embodiment of the invention discloses a messaging method and a related device. The messaging method comprises the steps that a first server receives a read / write request sent by a client, and distributes an instance number for identifying the read / write request to the read / write request; the first server sends a preparation request carrying the instance number to a second server in a wide area network; the first server receives a response message returned by the second server, wherein the response message comprises the quantity of the servers which allow the client to implement read / write operation in a data center; the first server determines whether to approve the read / write request according to the quantity of the servers which allow the client to implement the read / write operation in the response message; and if approved, the first server sends a read / write command to the server which allows the client to implement the read / write operation. By using the method, messaging can be effectively implemented between servers in the wide area network.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a message transfer method and related devices. Background technique [0002] Distributed systems can perform the same tasks or store the same data in each server in the system through redundancy. The distributed system works collaboratively between the servers of the system, so that even when some of the servers in the system cannot work normally, the entire system can still complete tasks, and has a better ability to face unexpected situations such as power failures, natural disasters, etc. . In a distributed system, in order to ensure the consistency of the server status in the system, a consensus algorithm such as the Paxos algorithm needs to be used for message transmission. [0003] However, when using the Paxos algorithm for message delivery, the server that receives the client's request needs to communicate with all other servers in the WAN, which results in a la...

AI Technical Summary

Problems solved by technology

[0003] However, when passing messages through the Paxos algorithm, the server that receives the client’s request needs to communicate with all other servers in the WAN, resulting in a large number of messages being transmitted in the WAN, which seriously restricts the throughput of the system when the system scale is large. amount, and make the server that receives the request load heavier

At the same time, in the wide area network environment, due to the complex network conditions, when data centers far away from each other execute the Paxos algorithm, packet loss or network congestion is unavoidable.

When the number of servers running the Paxos algorithm increases, the number of messages also increases, which may cause more serious network problems

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