CN114124969A - Data copying method, device, equipment and storage medium - Google Patents
Data copying method, device, equipment and storage medium Download PDFInfo
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- CN114124969A CN114124969A CN202111412677.2A CN202111412677A CN114124969A CN 114124969 A CN114124969 A CN 114124969A CN 202111412677 A CN202111412677 A CN 202111412677A CN 114124969 A CN114124969 A CN 114124969A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/101—Server selection for load balancing based on network conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1031—Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
Abstract
The invention discloses a data replication method, a data replication device, data replication equipment and a storage medium, and belongs to the technical field of computer processing. The method comprises the following steps: in a monitoring time period, identifying whether a target slave server with a dynamic index value larger than a set threshold value exists in a server cluster; if the target slave server exists, updating the topological graph of the server cluster according to the resource utilization rate of the target slave server, the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster; and controlling the slave servers in the server cluster to perform data replication according to the updated topological graph of the server cluster. According to the technical scheme, under the condition of limited resources, the delay degree of data copying is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of computer processing, in particular to a data replication method, a data replication device, data replication equipment and a storage medium.
Background
The replication of data is a common mechanism of computer systems, and the traditional connection structure between servers has two types, namely a chain type and a star type. In the process of data replication between servers, although the data replication between the servers connected in the star structure has the advantage of low delay, the load on a core main node, namely a main server is large; although the data replication between the servers connected in the chain structure has the advantage of low performance consumption, the data replication delay degree is large.
Disclosure of Invention
The invention provides a data copying method, a device, equipment and a storage medium, which aim to reduce the delay of data copying as much as possible under the condition of controlling the use degree of resources.
In a first aspect, an embodiment of the present invention provides a data replication method, where the method includes:
in a monitoring time period, identifying whether a target slave server with a dynamic index value larger than a set threshold value exists in a server cluster; wherein the dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server;
if the target slave server exists, updating the topological graph of the server cluster according to the resource utilization rate of the target slave server, the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster;
and controlling the slave servers in the server cluster to perform data replication according to the updated topological graph of the server cluster.
In a second aspect, an embodiment of the present invention further provides a data multiplexing apparatus, where the apparatus includes:
the target slave server determining module is used for identifying whether a target slave server with the numerical value of the dynamic index larger than a set threshold exists in the server cluster in the monitoring time period; wherein the dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server;
a topology map updating module, configured to update the topology map of the server cluster according to the resource usage rate of the target slave server, the resource usage rates of other slave servers in the server cluster, and the topology map of the server cluster if the target slave server exists; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster;
and the control module is used for controlling the slave servers in the server cluster to perform data replication according to the updated topological graph of the server cluster.
In a third aspect, an embodiment of the present invention further provides an electronic device, where the electronic device includes:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a data replication method as provided by any of the embodiments of the invention.
In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the data replication method provided in any embodiment of the present invention.
According to the technical scheme of the embodiment of the invention, whether a target slave server with the numerical value of the dynamic index larger than a set threshold exists in the server cluster is identified in the monitoring time period; the dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server, and if the server cluster exists, the topological graph of the server cluster is updated according to the resource utilization rate of the target slave server, the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster, and further controlling the slave servers in the server cluster to replicate data according to the updated topological graph of the server cluster. According to the technical scheme, the slave servers in the server cluster are monitored by setting the time period, the topological graph of the server cluster is updated, the connection relation between the slave servers is dynamically adjusted, the delay degree of data replication is reduced under the condition that the computing resources are limited and the resource utilization degree is controlled, and a new thought is provided for data replication between the servers in the server cluster.
Drawings
Fig. 1 is a flowchart of a data replication method according to an embodiment of the present invention;
fig. 2 is a flowchart of a data replication method according to a second embodiment of the present invention;
fig. 3 is a flowchart of a data replication method according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a data copying apparatus according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a data replication method according to an embodiment of the present invention, where this embodiment is applicable to a case where a computer system performs data replication, and is particularly applicable to a case where data replication is performed between servers in a server cluster, where the method may be executed by a data replication device, where the data replication device may be implemented by software and/or hardware, and may be integrated in an electronic device bearing a data replication function, such as a monitoring server.
As shown in fig. 1, the method may specifically include:
s110, in the monitoring time period, whether a target slave server with the numerical value of the dynamic index larger than a set threshold exists in the server cluster is identified.
In this embodiment, the dynamic index includes a resource utilization rate and/or a replication delay, and is used to determine whether to update a topology map of the server cluster; the resource utilization rate refers to resource utilization rate of the server, and may include CPU utilization rate, memory utilization rate, disk utilization rate, IO utilization rate, and the like; the replication delay degree is a delay degree generated when a slave server replicates data from a master server in a server cluster. The server cluster comprises a main server and at least one slave server.
In this embodiment, the monitoring time period refers to a time period for monitoring the dynamic index of the server in the server cluster, and may be set by a person skilled in the art according to actual situations, for example, every minute, or every 5 minutes. The target slave server is a slave server that needs to be adjusted in the server cluster, and the number of target slave servers may be one or more.
Specifically, the monitoring server monitors the dynamic index of the slave server in the server cluster every other minute, and identifies whether the resource utilization rate of the slave server in the server cluster is greater than a first threshold and/or the replication delay degree is greater than a second threshold, and if so, the slave server with the resource utilization rate greater than the first threshold and/or the replication delay degree greater than the second threshold is taken as the target slave server. The first threshold and the second threshold may be set by those skilled in the art according to actual situations, for example, the first threshold is 40%, and the second threshold is 20%.
S120, if the topological graph exists, updating the topological graph of the server cluster according to the resource utilization rate of the target slave server, the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster; and/or updating the topological graph of the server cluster according to the replication delay degree of the target slave server, the resource utilization rate and the replication delay degree of other slave servers in the server cluster and the topological graph of the server cluster.
In this embodiment, the topology diagram of the server cluster is used to represent a connection relationship between servers in the server cluster, and it should be noted that an initial structure of the topology diagram of the server cluster is a chain structure.
Optionally, if there is a target slave server in the server cluster whose resource usage rate is greater than the first threshold, the topology map of the server cluster is updated according to the resource usage rate of the target slave server, the resource usage rates of other slave servers in the server cluster, and the topology map of the server cluster.
Optionally, if there is a target slave server in the server cluster whose replication delay is greater than the second threshold, the topology map of the server cluster is updated according to the replication delay of the target slave server, the resource usage rate and the replication delay of other slave servers in the server cluster, and the topology map of the server cluster.
Optionally, if there is a target slave server in the server cluster whose resource usage rate is greater than the first threshold and there is a target slave server in the server cluster whose replication delay is greater than the second threshold, the topology map of the server cluster is updated according to the resource usage rate of the target slave server, the resource usage rates of other slave servers in the server cluster, and the topology map of the server cluster, so as to obtain a first topology map of the server cluster; and then updating the topological graph of the server cluster according to the replication delay degree of the target slave server, the resource utilization rate and the replication delay degree of other slave servers in the server cluster and the first topological graph of the server cluster.
Optionally, if the number of the target slave servers is at least two, updating the topological graph of the server cluster according to the resource utilization rates of other slave servers of the server cluster and the topological graph of the server cluster, where the topological graph of the server cluster is updated by sorting each target slave server according to the resource utilization rate of the target slave server; and according to the sequencing result, sequentially executing the operation of updating the topological graph of the server cluster according to the resource utilization rate of other slave servers in the server cluster and the topological graph of the server cluster on each target slave server.
Specifically, according to the resource utilization rate of the target slave servers, the target slave servers are sorted from large to small; and according to the sequencing result, starting from the target slave server with high resource utilization rate, and sequentially executing the operation of updating the topological graph of the server cluster according to the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster for each target slave server. That is, each time the topology map of the server cluster is updated, the updating is performed on the basis of the topology map that is updated last time.
Optionally, if the number of the target slave servers is at least two, updating the server topological graph according to the resource utilization rate and the replication delay of other slave servers of the server cluster and the topological graph of the server cluster, where the updating of the server topological graph may be performed by sorting each target slave server according to the replication delay of the target slave server; and according to the sequencing result, sequentially executing the operation of updating the topological graph of the server cluster according to the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster to each target slave server.
Specifically, according to the replication delay of the target slave servers, sequencing the target slave servers from large to small; and according to the sequencing result, starting from the target slave server with the large replication delay degree, sequentially executing the operation of updating the topological graph of the server cluster according to the resource utilization rate and the replication delay degree of other slave servers in the server cluster and the topological graph of the server cluster for each target slave server. That is, each time the topology map of the server cluster is updated, the updating is performed on the basis of the topology map that is updated last time.
It can be understood that, by sorting the target slave servers according to the resource utilization rate or the replication delay degree of the target slave servers, and firstly adjusting the connection positions of the target slave servers with large resource utilization rates or replication delay degrees, the replication delay degree in the server cluster can be reduced, and the load of the master server can be reduced.
And S130, controlling the slave servers in the server cluster to perform data replication according to the updated topological graph of the server cluster.
In this embodiment, the monitoring server sends the updated topology map of the server cluster to the slave server in the server cluster, so that the slave server in the server cluster performs data replication from the master server based on the updated topology map of the server cluster.
It should be noted that, based on the topology of the server cluster, the lower-level server may copy data from the higher-level server.
According to the technical scheme of the embodiment of the invention, whether a target slave server with the numerical value of the dynamic index larger than a set threshold exists in the server cluster is identified in the monitoring time period; the dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server, and if the server cluster exists, the topological graph of the server cluster is updated according to the resource utilization rate of the target slave server, the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster, and further controlling the slave servers in the server cluster to replicate data according to the updated topological graph of the server cluster. According to the technical scheme, the slave servers in the server cluster are monitored by setting the time period, the topological graph of the server cluster is updated, the connection relation between the slave servers is dynamically adjusted, the delay degree of data replication is reduced under the condition that the computing resources are limited and the resource utilization degree is controlled, and a new thought is provided for data replication between the servers in the server cluster.
On the basis of the above technical solution, as an optional way of the embodiment of the present invention, if it is identified that a new server joins a server cluster, deep traversal is performed on the server cluster from a master server according to a topological graph of the server cluster, and a slave server whose resource usage rate is less than or equal to a first threshold and whose replication delay degree is less than a second threshold is searched for as a candidate affiliated server of the new server; selecting a target attachment server of a new server from the candidate attachment servers according to a path between the candidate attachment server and the main server; and attaching the new server to a target attachment server of the new server.
The candidate attachment server is a slave server meeting an attachment condition in the server cluster, and the attachment condition is that the resource utilization rate is smaller than or equal to a first threshold and the replication delay degree is smaller than a second threshold. The target attached server refers to a server in the server cluster to which the new server will connect.
Specifically, if the monitoring server identifies that a new server needs to be added into the server cluster, the monitoring server performs deep traversal on the server cluster from the main server according to the topological graph of the server cluster, searches for a slave server of which the resource utilization rate is smaller than or equal to a first threshold and the replication delay degree is smaller than a second threshold, and uses the slave server as a candidate affiliated server of the new server; for each candidate attachment server, determining the length of a path between the candidate attachment server and the main server; and according to the length of the path between each candidate server and the main server, selecting the candidate attachment server with the longest path from the candidate attachment servers as a target attachment server of the new server, and attaching the new server to the target attachment server.
It can be understood that, by deeply traversing the server cluster, an appropriate server is selected as a server to which the server newly joining the server cluster is attached, so as to reduce the delay degree of server replication as much as possible.
Example two
Fig. 2 is a flowchart of a data replication method according to a second embodiment of the present invention, and on the basis of the second embodiment, an alternative embodiment is provided for further optimizing "updating a topology map of a server cluster according to resource usage of a target slave server, resource usage of other slave servers in the server cluster, and a topology map of the server cluster".
As shown in fig. 2, the method may specifically include:
s210, in the monitoring time period, whether a target slave server with the numerical value of the dynamic index larger than a set threshold exists in the server cluster is identified.
The dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server.
S220, determining the affiliated server of the target slave server from other slave servers and/or the master server according to the resource utilization rate of other slave servers in the server cluster and the topological graph of the server cluster.
In this embodiment, the affiliated server refers to a server that needs to be a higher-level server than other servers in the server cluster, that is, other servers need to be connected to the server.
Optionally, if the target slave server is used as a starting point based on the topological graph of the server cluster, and another slave server whose resource utilization rate is less than or equal to the first threshold value and is closest to the target slave server is searched from the server cluster upwards, the searched other slave server is used as a server to which the target slave server is attached. Specifically, based on the topology map of the server cluster, a search is performed from the server cluster in a direction higher than the target slave server hierarchy from the target slave server as a starting point, and another slave server having a resource usage rate smaller than or equal to a first threshold value, which is searched first, is attached to the target slave server.
Optionally, if other slave servers meeting the condition are not searched upwards, performing deep traversal on the server cluster by using the master server as a starting point based on the topological graph of the server cluster, and searching whether a candidate slave server with the resource utilization rate smaller than or equal to a first threshold exists in the server cluster; if the candidate slave servers exist, determining the affiliated server of the target slave server from the candidate slave servers according to the path between the candidate slave servers and the main server; and if the master server does not exist, taking the master server as the attachment server of the target slave server.
Specifically, if no other slave server meeting the condition is searched upwards, that is, no other slave server with the resource utilization rate less than or equal to the first threshold is found in the slave servers higher than the target slave server level, the server cluster is deeply traversed by taking the master server as a starting point based on the topological graph of the server cluster, and whether a candidate slave server with the resource utilization rate less than or equal to the first threshold exists is searched downwards from the server cluster. It should be noted that other slave servers that have been searched in the upward search are not repeatedly traversed in the downward search.
And if the candidate slave servers with the resource utilization rate smaller than or equal to the first threshold exist, selecting the candidate slave server with the longest path as the attachment server of the target slave server according to the length of the path between the candidate slave servers and the master server. For example, if at least two candidate slave servers with the same path length exist at the same time, one candidate slave server is randomly selected as the attachment server of the target slave server.
And if no candidate slave server with the resource utilization rate less than or equal to the first threshold value exists, namely no slave server with the resource utilization rate less than or equal to the first threshold value exists in the server cluster, taking the master server as the affiliated server of the target slave server.
And S230, attaching the target to the attachment server from any subtree of the server so as to update the topological graph of the server cluster.
Wherein a sub-tree is a slave server or sub-server cluster of the next level to which the target slave server is connected.
In this embodiment, the target is attached to the attachment server from any subtree of the server, so as to update the topological graph of the server cluster.
And S240, controlling the slave servers in the server cluster to copy data according to the updated topological graph of the server cluster.
According to the technical scheme, whether a target slave server with the value of the dynamic index larger than the set threshold value exists in the server cluster is identified in the monitoring time period, then the attachment server of the target slave server is determined from other slave servers and/or the master server according to the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster, any subtree of the target slave server is attached to the attachment server so as to update the topological graph of the server cluster, and then the slave servers in the server cluster are controlled to perform data replication according to the updated topological graph of the server cluster. According to the technical scheme, under the condition of controlling the resource utilization rate, the replication delay degree during data replication between the servers can be reduced.
EXAMPLE III
Fig. 3 is a flowchart of a data replication method according to a third embodiment of the present invention, and on the basis of the third embodiment, an alternative embodiment is provided for further optimizing "the topology map of the server cluster is updated according to the replication delay of the target slave server, the resource usage rate and the replication delay of other slave servers in the server cluster, and the topology map of the server cluster.
As shown in fig. 3, the method may specifically include:
s310, in the monitoring time period, whether a target slave server with the numerical value of the dynamic index larger than a set threshold exists in the server cluster is identified.
The dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server.
S320, determining the attachment server of the target slave server from other slave servers and/or the master server according to the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster.
Optionally, if the target slave server is used as a starting point based on the topological graph of the server cluster, and other slave servers closest to the target slave server are searched from the server cluster upwards, where the resource utilization rate is less than or equal to the first threshold, the replication delay degree is less than the second threshold, and the other searched slave servers are used as the attachment servers of the target slave server. Specifically, based on the topological graph of the server cluster, a search is performed from the server cluster in a direction higher than the target slave server hierarchy from the target slave server as a starting point, and another slave server having a resource usage rate smaller than or equal to a first threshold and a replication delay smaller than a second threshold, which is searched first, is used as a server to which the target slave server is attached.
Optionally, if other slave servers meeting the condition are not searched upwards, the server cluster is deeply traversed by taking the master server as a starting point based on the topological graph of the server cluster, and whether a candidate slave server with the resource utilization rate smaller than or equal to a first threshold and the replication delay smaller than a second threshold exists is searched from the server cluster; if the candidate slave servers exist, determining the affiliated server of the target slave server from the candidate slave servers according to the path between the candidate slave servers and the main server; and if the master server does not exist, taking the master server as the attachment server of the target slave server.
Specifically, if no other slave server meeting the condition is searched upwards, that is, no other slave server with the resource utilization rate less than or equal to the first threshold and the replication delay degree less than the second threshold is found in the slave servers higher than the target slave server level, the server cluster is deeply traversed by taking the master server as a starting point based on the topological graph of the server cluster, and whether a candidate slave server with the resource utilization rate less than or equal to the first threshold and the replication delay degree less than the second threshold exists is searched downwards from the server cluster. It should be noted that other slave servers that have been searched in the upward search are not repeatedly traversed in the downward search.
And if the candidate slave servers with the resource utilization rate smaller than or equal to the first threshold and the replication delay degree smaller than the second threshold exist, selecting the candidate slave server with the longest path as the attachment server of the target slave server according to the length of the path between the candidate slave server and the main server. For example, if at least two candidate slave servers with the same path length exist at the same time, one candidate slave server is randomly selected as the attachment server of the target slave server.
And if no candidate slave server with the resource utilization rate less than or equal to the first threshold and the replication delay degree less than the second threshold exists, namely no slave server with the resource utilization rate less than or equal to the first threshold and the replication delay degree less than the second threshold exists in the server cluster, taking the master server as the affiliated server of the target slave server.
And S330, attaching the target from the server to the attached server so as to update the topological graph of the server cluster.
In this embodiment, the target is attached to the attachment server from the server, and at the same time, the other slave servers connected to the target slave server perform position change together with the target slave server. That is, the target is attached to the attached server from the server, and other slave servers connected under the target slave server are still attached under the target slave server. Thereby updating the topology map of the server cluster.
And S340, controlling the slave servers in the server cluster to perform data replication according to the updated topological graph of the server cluster.
According to the technical scheme, whether a target slave server with the value of the dynamic index larger than the set threshold exists in the server cluster is identified in the monitoring time period, then the attachment server of the target slave server is determined from other slave servers and/or the master server according to the resource utilization rate and the copying delay degree of other slave servers in the server cluster and the topological graph of the server cluster, the target slave server is attached to the attachment server to update the topological graph of the server cluster, and then the slave servers in the server cluster are controlled to copy data according to the updated topological graph of the server cluster. According to the technical scheme, under the condition that the replication delay degree is too large, the resource utilization rate and the replication delay degree are considered at the same time, the proper affiliated server is selected from the server cluster, and under the condition that the resource utilization rate is controlled, the replication delay degree during data replication between the servers can be reduced.
Example four
Fig. 4 is a schematic structural diagram of a data replication device according to a fourth embodiment of the present invention, where this embodiment is applicable to a situation where a computer system performs data replication, and is particularly applicable to a situation where data replication is performed between servers in a server cluster, and the device may be implemented in a software and/or hardware manner, and may be integrated in an electronic device bearing a data replication function, for example, a monitoring server.
As shown in fig. 4, the apparatus may specifically include:
a target slave server determining module 410, configured to identify whether a target slave server having a dynamic index with a value larger than a set threshold exists in the server cluster in the monitoring time period; the dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server;
a topology map updating module 420, configured to update the topology map of the server cluster according to the resource usage rate of the target slave server, the resource usage rates of other slave servers in the server cluster, and the topology map of the server cluster, if the topology map exists; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster;
and the control module 430 is configured to control the slave servers in the server cluster to perform data replication according to the updated topology map of the server cluster.
According to the technical scheme of the embodiment of the invention, whether a target slave server with the numerical value of the dynamic index larger than a set threshold exists in the server cluster is identified in the monitoring time period; the dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server, and if the server cluster exists, the topological graph of the server cluster is updated according to the resource utilization rate of the target slave server, the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster, and further controlling the slave servers in the server cluster to replicate data according to the updated topological graph of the server cluster. According to the technical scheme, the slave servers in the server cluster are monitored by setting the time period, the topological graph of the server cluster is updated, the connection relation between the slave servers is dynamically adjusted, the delay degree of data replication is reduced under the condition that the computing resources are limited and the resource utilization degree is controlled, and a new thought is provided for data replication between the servers in the server cluster.
Further, the topology map updating module 420 includes a first updating sub-module, which includes:
the first affiliated server determining unit is used for determining affiliated servers of target slave servers from other slave servers and/or the master server according to the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster;
the first attachment unit is used for attaching the target to the attachment server from any subtree of the server; wherein a sub-tree is a slave server or sub-server cluster of the next level to which the target slave server is connected.
Further, the first attachment server determining unit is specifically configured to:
and if other slave servers which are lower than or equal to the first threshold value and are closest to the target slave server are searched upwards from the server cluster by taking the target slave server as a starting point based on the topological graph of the server cluster, taking the searched other slave servers as the affiliated servers of the target slave server.
Further, the first attachment server determining unit is further specifically configured to:
if other slave servers meeting the conditions are not searched upwards, the server cluster is subjected to deep traversal by taking the main server as a starting point based on the topological graph of the server cluster, and whether candidate slave servers with the resource utilization rate smaller than or equal to a first threshold exist or not is searched from the server cluster;
if the candidate slave servers exist, determining the affiliated server of the target slave server from the candidate slave servers according to the path between the candidate slave servers and the main server;
and if the master server does not exist, taking the master server as the attachment server of the target slave server.
Further, if the number of the target slave servers is at least two, the first update submodule further includes:
the first sequencing unit is used for sequencing each target slave server according to the resource utilization rate of the target slave server;
and the first updating unit is used for sequentially executing the operation of updating the topological graph of the server cluster according to the resource utilization rate of other slave servers in the server cluster and the topological graph of the server cluster to each target slave server according to the sequencing result.
Further, the topology map updating module 420 further includes a second updating sub-module, and the second updating sub-module includes:
the second affiliated server determining unit is used for determining the affiliated server of the target slave server from other slave servers and/or the master server according to the resource utilization rate and the replication delay degree of other slave servers in the server cluster and the topological graph of the server cluster;
and the second attachment unit is used for attaching the target to the attachment server from the server.
Further, the second attachment server determining unit is specifically configured to:
and based on the topological graph of the server cluster, searching other slave servers which are closest to the target slave server from the server cluster upwards by taking the target slave server as a starting point, wherein the resource utilization rate is less than or equal to a first threshold value, the replication delay degree is less than a second threshold value, and the other slave servers are taken as the attachment servers of the target slave server.
Further, the second attachment server determining unit is further specifically configured to:
if other slave servers meeting the conditions are not searched upwards, the server cluster is subjected to deep traversal by taking the main server as a starting point based on the topological graph of the server cluster, and whether candidate slave servers with the resource utilization rate smaller than or equal to a first threshold and the replication delay degree smaller than a second threshold exist in the server cluster or not is searched;
if the candidate slave servers exist, determining the affiliated server of the target slave server from the candidate slave servers according to the path between the candidate slave servers and the main server;
and if the master server does not exist, taking the master server as the attachment server of the target slave server.
Further, the second update sub-module further includes:
the second sequencing unit is used for sequencing all the target slave servers according to the replication delay degrees of the target slave servers;
and the second updating unit is used for sequentially executing the operation of updating the topological graph of the server cluster according to the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster to each target slave server according to the sequencing result.
Further, the apparatus further includes a target attachment server determination module, which is specifically configured to:
if the new server is identified to be added into the server cluster, performing deep traversal on the server cluster from the main server according to the topological graph of the server cluster, and searching a slave server of which the resource utilization rate is smaller than or equal to a first threshold and the replication delay degree is smaller than a second threshold as a candidate affiliated server of the new server;
selecting a target attachment server of a new server from the candidate attachment servers according to a path between the candidate attachment server and the main server;
and attaching the new server to a target attachment server of the new server.
Further, the initial structure of the topological graph of the server cluster is a chain structure.
The data copying device can execute the data copying method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the executing method.
EXAMPLE five
Fig. 5 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present invention, and fig. 5 shows a block diagram of an exemplary device suitable for implementing the embodiment of the present invention. The device shown in fig. 5 is only an example and should not bring any limitation to the function and the scope of use of the embodiments of the present invention.
As shown in FIG. 5, electronic device 12 is embodied in the form of a general purpose computing device. The components of electronic device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
Electronic device 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by electronic device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory (cache 32). The electronic device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 5, and commonly referred to as a "hard drive"). Although not shown in FIG. 5, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. System memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in system memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of embodiments described herein.
Electronic device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with electronic device 12, and/or with any devices (e.g., network card, modem, etc.) that enable electronic device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Also, the electronic device 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet) via the network adapter 20. As shown, the network adapter 20 communicates with other modules of the electronic device 12 via the bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processing unit 16 executes various functional applications and data processing, such as implementing a data copy method provided by an embodiment of the present invention, by executing programs stored in the system memory 28.
EXAMPLE six
The sixth embodiment of the present invention further provides a computer-readable storage medium, on which a computer program (or referred to as computer-executable instructions) is stored, where the computer program is used for executing the data copying method provided by the sixth embodiment of the present invention when the computer program is executed by a processor.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for embodiments of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the embodiments of the present invention have been described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and many other equivalent embodiments may be included without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (14)
1. A method of data replication, comprising:
in a monitoring time period, identifying whether a target slave server with a dynamic index value larger than a set threshold value exists in a server cluster; wherein the dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server;
if the target slave server exists, updating the topological graph of the server cluster according to the resource utilization rate of the target slave server, the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster;
and controlling the slave servers in the server cluster to perform data replication according to the updated topological graph of the server cluster.
2. The method of claim 1, wherein updating the topology map of the server cluster according to the resource utilization of other slave servers in the server cluster and the topology map of the server cluster comprises:
determining a affiliated server of the target slave server from other slave servers and/or a master server according to the resource utilization rates of other slave servers in the server cluster and the topological graph of the server cluster;
attaching the target to the attachment server from any subtree of the server; wherein a sub-tree is a slave server or a cluster of sub-servers of a next hierarchy to which the target slave server is connected.
3. The method of claim 2, wherein the determining the attachment server of the target slave server from the other slave servers according to the resource utilization rates of the other slave servers in the server cluster and the topological graph of the server cluster comprises:
and if other slave servers which are not more than a first threshold value and are closest to the target slave server are searched upwards from the server cluster by taking the target slave server as a starting point based on the topological graph of the server cluster, taking the searched other slave servers as the affiliated servers of the target slave server.
4. The method according to claim 2, wherein the determining the attachment server of the target slave server from the other slave servers and the master server according to the resource utilization rates of the other slave servers in the server cluster and the topological graph of the server cluster comprises:
if other slave servers meeting the conditions are not searched upwards, based on the topological graph of the server cluster, the server cluster is subjected to deep traversal by taking a main server as a starting point, and whether candidate slave servers with the resource utilization rate smaller than or equal to a first threshold exist in the server cluster is searched;
if the candidate slave servers exist, determining the attachment server of the target slave server from the candidate slave servers according to the path between the candidate slave servers and the main server;
and if the target slave server does not exist, taking the master server as the affiliated server of the target slave server.
5. The method according to claim 2, wherein if the number of the target slave servers is at least two, the updating the topology map of the server cluster according to resource utilization rates of other slave servers of the server cluster and the topology map of the server cluster comprises:
sequencing each target slave server according to the resource utilization rate of the target slave servers;
and according to the sequencing result, sequentially executing the operation of updating the topological graph of the server cluster according to the resource utilization rate of other slave servers in the server cluster and the topological graph of the server cluster on each target slave server.
6. The method according to claim 1, wherein the updating the topology map of the server cluster according to the resource utilization and the replication delay of other slave servers in the server cluster and the topology map of the server cluster comprises:
determining a affiliated server of the target slave server from other slave servers and/or a master server according to the resource utilization rate and the replication delay of other slave servers in the server cluster and a topological graph of the server cluster;
and attaching the target to the attaching server from the server.
7. The method according to claim 6, wherein the determining the attachment server of the target slave server from the other slave servers according to the resource utilization and the replication delay of the other slave servers in the server cluster and the topological graph of the server cluster comprises:
and if the target slave server is taken as a starting point based on the topological graph of the server cluster, other slave servers which are searched for are taken as the affiliated servers of the target slave server when the resource utilization rate is smaller than or equal to a first threshold value, the replication delay degree is smaller than a second threshold value and the other slave servers which are closest to the target slave server are searched upwards from the server cluster.
8. The method according to claim 6, wherein the determining the attachment server of the target slave server from the other slave servers and the master server according to the resource utilization and the replication delay of the other slave servers in the server cluster and the topological graph of the server cluster comprises:
if other slave servers meeting the conditions are not searched upwards, based on the topological graph of the server cluster, the server cluster is subjected to deep traversal by taking a main server as a starting point, and whether candidate slave servers with the resource utilization rate smaller than or equal to a first threshold and the replication delay degree smaller than a second threshold exist in the server cluster is searched;
if the candidate slave servers exist, determining the attachment server of the target slave server from the candidate slave servers according to the path between the candidate slave servers and the main server;
and if the target slave server does not exist, taking the master server as the affiliated server of the target slave server.
9. The method according to claim 6, wherein if the number of the target slave servers is at least two, the updating the server topology map according to resource utilization and replication delay of other slave servers of the server cluster and the topology map of the server cluster comprises:
sequencing each target slave server according to the replication delay of the target slave servers;
and according to the sequencing result, sequentially executing the operation of updating the topological graph of the server cluster according to the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster to each target slave server.
10. The method of claim 1, further comprising:
if the new server is identified to be added into the server cluster, performing deep traversal on the server cluster from a main server according to the topological graph of the server cluster, and searching a slave server of which the resource utilization rate is smaller than or equal to a first threshold and the replication delay degree is smaller than a second threshold as a candidate affiliated server of the new server;
selecting a target attachment server of the new server from the candidate attachment servers according to a path between the candidate attachment server and the main server;
and attaching the new server to a target attachment server of the new server.
11. The method of claim 1, wherein the initial structure of the topology map of the server cluster is a chain structure.
12. A data copying apparatus, comprising:
the target slave server determining module is used for identifying whether a target slave server with the numerical value of the dynamic index larger than a set threshold exists in the server cluster in the monitoring time period; wherein the dynamic index comprises resource utilization rate and/or replication delay degree; the server cluster comprises a main server and at least one slave server;
a topology map updating module, configured to update the topology map of the server cluster according to the resource usage rate of the target slave server, the resource usage rates of other slave servers in the server cluster, and the topology map of the server cluster if the target slave server exists; and/or updating the topological graph of the server cluster according to the replication delay of the target slave server, the resource utilization rate and the replication delay of other slave servers in the server cluster and the topological graph of the server cluster;
and the control module is used for controlling the slave servers in the server cluster to perform data replication according to the updated topological graph of the server cluster.
13. An electronic device, comprising:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the data replication method of any one of claims 1-11.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the data replication method according to any one of claims 1 to 11.
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