Multi-terminal data synchronization method based on ACK synchronization

Abstract

The invention provides a multi-terminal data synchronization method based on ACK synchronization. According to the method, a server and all terminals keep respective latest transmission control character sequence numbers; the server is firstly started to read in the latest value of the own transmission control character sequence number, and then all the terminals are started to read in the latest values of the respective transmission control character sequence numbers; when data is newly added to one terminal, the terminal sends the data to the server; the server saves the data, updates the own transmission control character sequence number, and broadcasts the data to all the terminals; after receiving the data broadcasted by the server, any one terminal parses the transmission control character sequence number of the broadcasted data, and judges whether the transmission control character sequence number of the broadcasted data is equal to the value of the local transmission control character sequence number plus one or not; if yes, the terminal updates the broadcasted data to the local end, and updates the value of the local transmission control character sequence number; if no, the terminal discards the broadcasted data, and uploads a synchronization request containing the value of the local transmission control character sequence number to the server; after obtaining the corresponding data, the terminal updates both the local data and the value of the local transmission control character sequence number.

Description

technical field [0001] The present invention relates to the application field of computer engineering technology, more specifically, to a data synchronization method based on synchronous ACK correction. Background technique [0002] With the continuous development of cloud computing, the idea of ​​distributed systems has gradually begun to penetrate into various systems. Distributed systems include distributed operating systems, distributed programming languages ​​and compilation and interpretation systems, distributed file systems and distributed databases. system etc. The biggest feature of a distributed system is the high concurrent processing between processes and ensuring the reliability and availability of data. High concurrency requires real-time synchronization between data, and reliability requires multi-server data backup, so that when a server data has a problem, it can be restored, which brings about the problem of data storage synchronization between servers, w...

AI Technical Summary

Problems solved by technology

[0005] Although the data synchronization scheme between servers is relatively mature, basically through synchronous merging of nodes, I / O fault tolerance and distributed protocol recovery, the data synchronization scheme for terminals is not very mature

Because multiple terminals cannot directly communicate and synchronize like a server, but need to be synchronized through the server uniformly, which puts a huge pressure on the server

Images