Data synchronization method and device and distributed system
A technology of data synchronization and distributed hashing, which is applied in the transmission system, electrical components, etc., and can solve the problems of data synchronization transmission bottleneck effect and poor sealing
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[0054] Example one:
[0055] The first embodiment of the present invention provides a data synchronization method. A multi-data center includes at least two data centers, each of the at least two data centers includes at least two nodes, and the at least two data centers All service nodes in the at least two data centers are mapped to a distributed hash DHT ring, each continuous value range in the DHT ring corresponds to a service node, and the service in the first data center of the at least two data centers The node has at least one backup node corresponding to a data interval distribution in at least one second data center of the at least two data centers.
[0056] In a specific implementation process, the service node in the first data center of the at least two data centers has at least one backup corresponding to the data interval distribution in at least one second data center of the at least two data centers Node, there are two situations, in which, in the first case, all ...
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[0159] Example two
[0160] The second embodiment of the present invention provides a data synchronization device, see Figure 7 with Picture 8 , The data synchronization device is respectively connected to each data center in a plurality of data centers. The multiple data centers include at least two data centers, and each of the at least two data centers includes at least two data centers. Nodes, all service nodes in the at least two data centers are mapped to a distributed hash DHT ring, each continuous value range in the DHT ring corresponds to a service node, and the at least two data The service node in the first data center in the center has at least one backup node corresponding to the data interval distribution in at least one second data center of the at least two data centers, and the data synchronization device includes:
[0161] The first obtaining unit 701 is configured to obtain a routing update message indicating to update the routing information of the first data ...
Example Embodiment
[0185] Example three
[0186] The third embodiment of the present invention provides a data synchronization device, see Picture 9 , The data synchronization device is respectively connected to each data center in a plurality of data centers. The multiple data centers include at least two data centers, and each of the at least two data centers includes at least two data centers. Nodes, all service nodes in the at least two data centers are mapped to a distributed hash DHT ring, each continuous value range in the DHT ring corresponds to a service node, and the at least two data The service node in the first data center in the center has at least one backup node corresponding to the data interval distribution in at least one second data center of the at least two data centers, and the data synchronization device includes:
[0187] The memory 901 is configured to store routing table information of each data center in the multiple data centers, and the routing table information include...
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