CN111600958A - Service discovery system, service data management method, server, and storage medium - Google Patents
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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
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
- G06F16/278—Data partitioning, e.g. horizontal or vertical partitioning
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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
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
Abstract
The invention discloses a service discovery system, a service data management method, a server and a storage medium, wherein the system comprises a consistency storage service layer and a service access layer, and the service access layer comprises at least two service access points; the service access point is used for receiving a registration request of the created first service to access the first service and writing service online data of the first service into the consistency storage service layer; the consistency storage service layer is used for generating a corresponding target global sequence number after receiving the service on-line data, and storing the target global sequence number and the service on-line data in an associated mode. The service discovery system lays out a consistency storage service layer and a service access layer containing consistency storage data, service access points in the service access layer are deployed in all network partitions around the world, and the contained data are not subjected to consistency limitation; all layers in the service discovery system are mutually matched, so that the strong and consistent limit of the global network partition is weakened, and the high availability of service discovery under the global network partition is ensured.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a service discovery system, a service data management method, a server, and a storage medium.
Background
With the development of internet technology, distributed systems have become the mainstream data analysis and processing systems at present, and a service discovery system under the distributed systems is a key component for performing data analysis and processing by the distributed systems.
The conventional general service discovery system includes zookeeper (an application coordinating service software), etcd (a service discovery support component), and the like, which have strong consistency requirements, for example, when a service writes data into the service discovery system, the write operation needs to be allowed by more than half of nodes under the service discovery system, so that the network delay between the nodes needs to be very small, otherwise, the system performance of the entire service discovery system is greatly reduced.
In addition, in practical use, enterprises related to global network applications need to perform global network deployment according to regional partitions, and a service discovery system in the existing mode is not suitable for keeping strong consistency under network partitions, for example, when a strong consistent service discovery system has nodes in the world (partitioned according to regions such as asia, europe and america) to provide services, if a large number of service nodes exist in each network partition, strong consistent data synchronization is performed only by the strong consistent service discovery nodes, a large amount of computing resources are consumed, and thus the availability of the system is seriously affected.
Disclosure of Invention
The embodiment of the invention provides a service discovery system and a service data management method, which improve the usability of the service discovery system in the global network dimension.
In a first aspect, an embodiment of the present invention provides a service discovery system, including: the service access layer comprises at least two service access points;
the service access point is used for receiving a registration request of the created first service to access the first service and writing service online data of the first service into the consistent storage service layer;
and the consistency storage service layer is used for generating a corresponding target global sequence number after receiving the service on-line data, and storing the target global sequence number and the service on-line data in an associated manner.
In a second aspect, an embodiment of the present invention provides a service data management method, which is executed by the service discovery system provided in the first aspect of the present embodiment, and includes:
a service access point receives a registration request of the created first service to access the first service, and writes service online data of the first service into a consistency storage service layer;
and the consistency storage service layer generates a corresponding target global sequence number after receiving the service on-line data, and stores the target global sequence number and the service on-line data in an associated manner.
In a third aspect, an embodiment of the present invention provides a server, configured to serve as a service access point in a service discovery system provided in the first aspect of the present invention, where the server includes:
one or more processors;
storage means for storing one or more programs;
the one or more programs are executed by the one or more processors, so that the one or more processors are configured to execute the operation steps corresponding to the service access point in the service data management method according to the embodiment of the second aspect of the present invention.
In a fourth aspect, an embodiment of the present invention provides a server, configured to form a consistent storage service layer in a service discovery system provided in the first aspect of the present invention, where the consistent storage service layer includes:
one or more processors;
storage means for storing one or more programs;
the one or more programs are executed by the one or more processors, so that the one or more processors are configured to execute the operation steps corresponding to the consistent storage service layer in the service data management method according to the embodiment of the second aspect of the present invention.
In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the service data management method provided in the second aspect of the present invention.
In the service discovery system and the service data management method provided above, the service discovery system includes: the service access layer comprises at least two service access points; the service access point is used for receiving a registration request of the created first service to access the first service and writing service online data of the first service into the consistent storage service layer; and the consistency storage service layer is used for generating a corresponding target global sequence number after receiving the service on-line data, and storing the target global sequence number and the service on-line data in an associated manner. The service discovery system lays out a consistency storage service layer and a service access layer containing consistency storage data, service access points in the service access layer are deployed in all network partitions around the world, and the contained data are not subjected to consistency limitation; the consistent storage data layer and the service access points in the service access layer are mutually matched, so that the limitation of strong consistency of the global network partition is weakened, the high availability of service discovery under the global network partition is ensured, and the system performance of a distributed system is improved.
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Fig. 1 is an architecture diagram of a service discovery system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating an exemplary implementation of a service data management method executed by a service discovery system according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a hardware structure of a server according to a third embodiment of the present invention;
fig. 4 is a schematic diagram of a hardware structure of a server according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, the embodiments and features of the embodiments of the present invention may be combined with each other without conflict, and the respective embodiments may be mutually referred to and cited.
Example one
Fig. 1 is an architecture diagram of a service discovery system according to an embodiment of the present invention, as shown in fig. 1, the service discovery system includes: a coherent storage service layer 11 and a service access layer 12, the service access layer 12 comprising at least two service access points 121.
The service access point 121 is configured to receive a registration request of the created first service, to access the first service, and write service online data of the first service into the consistent storage service layer 11;
and the consistency storage service layer 11 is configured to generate a corresponding target global sequence number after receiving the service online data, and store the target global sequence number and the service online data in an associated manner.
In the present embodiment, the consistent storage service layer 11 may be specifically understood as a storage service layer that performs global storage and management on service data associated with services in a distributed system deployed under the global internet dimension. The coherent storage service layer 11 may be formed based on selecting nodes in a small physical range from the nodes constituting the distributed system, wherein the present embodiment may select some of the nodes constituting the coherent storage service according to the regional distribution of the network nodes, and the network nodes constituting the coherent storage service layer 11 may be selected from a network partition with asia as an example.
Meanwhile, compared with the service discovery system in the existing mode, the service discovery system provided in this embodiment further includes a service access layer 12, and the service access layer 12 specifically includes at least two service access points 121, where the service access point 121 may be specifically understood as a transit node, and specifically, a service created on a server may be accessed to the service discovery system through registration, where the server may be considered as a node device existing in each network partition in a distributed system.
It should be noted that each service access point 121 does not have a consistency limit, and a data copy is cached on the service access point 121, and the data copy is equivalent to the copy data of each global service data stored on the consistency storage service layer 11. For each service access point 121, the service built on the server in each network partition is theoretically allowed to perform access operation, and in practical application, a proximity principle is preferably considered, and for example, the service built on the server may select one service access point 121 belonging to the same network partition for registration access of the service according to the regional information of the network partition to which the server belongs.
In the service discovery system provided in this embodiment, the application scenario may be described as: in the global internet dimension, a distributed system forms a plurality of network partitions according to regions, a machine room forming each network partition of the distributed system comprises a certain number of servers, each server is equivalent to a cluster node of the distributed system, required services can be created on each node according to different application requirements, and meanwhile, the synchronization of data among the services needs to be ensured in consideration of business association among different services under the distributed system, so that the created services need to be registered and accessed into a service discovery system to realize the management of the service data associated with each service.
The working mode of the existing service discovery system is equivalent to that when a new service is accessed, the stored consistent service data needs to be completely copied to the newly accessed service, and the service data of the newly accessed service needs to be informed to other accessed services. The existing mode is adopted to manage large-scale service data, and a large amount of computing resources are consumed.
In this embodiment, after a new service is successfully created on the associated server, a service access point 121 may be selected from the service access layer 12 of the service discovery system provided above to perform service access through registration, in this embodiment, a service accessing the service access point 121 is recorded as a first service, and after accessing the first service, the service access point 121 may further obtain service online data of the first service and write the service online data into the consistency storage service layer 11. Meanwhile, it can be understood that, after the service access point 121 accesses the first service, a registration reply of successful access may be fed back to the first service. In this embodiment, any one of the service aps 121 in the service access stratum 12 has the above-described functions, and the plurality of service aps 121 may simultaneously access different first services and simultaneously write the service online data of the corresponding first service into the storage data of the consistent service.
In addition, the first service described above in this embodiment may also be a service that is previously accessed to some other service access point 121 in the service access layer 12, and when the service access point 121 that is accessed by the first service access point goes down, the first service may be switched to another service access point 121, so that the service re-accesses the service discovery system.
After the selected service access point 121 writes the service online data of the first service into the consistency storage service layer 11, the consistency storage service layer 11 may generate a target global sequence number of the service online data, where the target global sequence number may be regarded as a unique identifier of one piece of service data (e.g., service online data) of the associated service in the entire global service data. In this embodiment, through the target global sequence number, a service on-line data uniquely associated with the target global sequence number can be determined, and the service on-line data and the target global sequence number can be stored in an associated manner. The service access point 121 writes the service online data of the first service into the consistent storage service layer 11, and generates a corresponding target global sequence number to ensure consistent storage of the service data on the local node.
The service discovery system provided in this embodiment includes a consistent storage service layer 11 and a service access layer 12, where a service access point 121 in the service access layer 12 does not perform data consistency limitation on an accessed service, the consistent storage service layer 11 only includes a node in a small physical range, and the consistent storage of service data associated with a service in the small physical range can be realized by generating a global sequence number for written service online data. Compared with the existing service discovery system, the global consistency of the service data on each node is not required to be limited, the resource consumption in the service data management is reduced, and the setting mode of the global serial number can enable the system to effectively resist the downtime of any node (service access point 121), resist the loss of any service data and ensure the high availability of the service discovery system.
Further, the coherent storage service layer 11 includes:
and the sequence number determining unit is used for determining a locally stored current maximum target global sequence number after receiving the service on-line data, and adding a determined value to the current maximum target global sequence number to be used as a target global sequence number of the first service.
In this embodiment, the consistency storage service layer 11 of the service discovery system may include a sequence number determining unit, and the sequence number determining unit may effectively determine target global data corresponding to the service online data written by the service access point 121.
It should be noted that the local storage is specifically understood as storage on the consistent storage service layer 11, and the current maximum target global sequence number is specifically considered as a maximum target global sequence number that is possessed at the current time among target global sequence numbers that have been locally stored when the time when the service access point 121 writes service online data is received is taken as the current time. It can be understood that, in this embodiment, the target global sequence number is an integer value that is greater than 0 and is sequentially incremented, the sequence number determining unit may directly determine, from the locally stored sequence numbers, a maximum sequence number value at the current time, and then may add a determined value to the determined current maximum target global sequence number to serve as the target global sequence number of the first service.
It can be understood that the service discovery system includes a large number of service access points 121, and the service access points 121 are independent from each other, so that different service access points 121 may write the service online data to the consistent storage service layer 11 at the same time, at this time, the consistent storage service layer 11 may receive the service online data written by the service access points 121 at the same time, and a generation operation of a corresponding target global sequence number needs to be performed on each service online data.
For the above determination values, for example, assuming that the consistent storage service layer 11 receives 3 service online data at the same time, after determining the current maximum target global sequence number, in order to ensure the uniqueness of the target global sequence numbers corresponding to different service online data, 3 determination values starting from 1 and sequentially increasing may be obtained for each service online data, for example, the determination values corresponding to the 3 service online data are 1, 2, and 3, and thus the sequence number determination unit may determine a different target global sequence number corresponding to each service online data. In addition, it can be known that, if the time when the consistency storage service layer 11 receives each service online data is different, the corresponding current maximum target global sequence number is determined for each service online data, and then 1 is added to the current maximum target global sequence number as the target global sequence number of the corresponding service online data, at this time, the determined value is equal to 1.
The sequence number determining unit optimized and limited in this embodiment embodies an implementation process of generating a target global sequence number by the consistent storage service layer 11, and guarantees consistency and global performance of service data of an accessed service in the service discovery system through the implementation process.
Further, the service access point 121 is further configured to broadcast an online data write notification of the first service to other service access points 121 in the service access stratum 12;
the other service access points 121 are respectively configured to determine the current sequence number to be compared of the local cache and feed back the current sequence number to the consistency storage service layer 11 after receiving the online data write notification;
the consistency storage service layer 11 is further configured to feed back service data to be synchronized to the corresponding service access point 121 according to the received current serial numbers to be compared, so that the service online data of the first service is synchronized to each service access point 121 in the service access layer 12.
On the basis of the above embodiment, the present embodiment further optimizes that the service access point 121 accessing the first service in the service access layer 12 further has a function that, after writing the service online data of the first service into the consistency storage service layer 11, it can broadcast a message notification that the service online data of the first service has been written into the consistency storage service layer 11 to the other service access points 121 in the service access layer 12.
Specifically, after receiving the notification of writing the online service data, the other service access points 121 in the service access layer 12 may respectively determine the target global sequence number with the largest sequence number value corresponding to the current time from the locally stored data copy, and feed back the target global sequence number as the current sequence number to be compared to the consistency storage service layer 11. The purpose of each of the other service access points 121 to perform the above-described operations is to update the data content of the locally stored data copy. The data copy may be regarded as a data set formed by service data already stored on the coherent storage service layer 11, and the update operation of the data set may be performed periodically or by triggering, for example, the above-mentioned receiving of the write notification of the service online data corresponds to a triggering condition.
In this embodiment, the consistency storage service layer 11 may compare the current serial number to be compared fed back by each other service access point 121 with the current maximum target global serial number that the consistency storage service layer itself has when receiving the current serial number to be compared, so as to determine which new service online data are added to the consistency storage service layer 11 relative to each service access point 121, and thus feed back the newly added service online data as the service data to be synchronized to the corresponding service access point 121, thereby implementing synchronization of the service online data of the first service on each service access point 121.
It can be known that, for each service access point 121, after receiving the service data to be synchronized correspondingly fed back by the consistency storage service layer 11, it is equivalent to implement data update of the locally stored data copy, and it is ensured that the data copy on the service access point 121 and the service data stored on the consistency storage service layer 11 are synchronized. In the execution operation of determining the service data to be synchronized provided by this embodiment, only the new incremental service data that is inferior to the consistency storage service layer 11 needs to be determined each time, and the new incremental service data is used as the service data to be synchronized, so that the system only needs to complete the replication of the incremental data, and the occupation amount of computing resources for data consistency is greatly reduced.
The service discovery system provided by this embodiment, through the cooperation of the consistency storage service layer 11 and each service access point 121 in the service access layer 12, achieves the consistency of global service data, message delay under global internet dimensionality or network isolation of network partitions, and the like, and through the support of the service discovery system, only delay delivery of service data at each service access point 121 is caused, but loss of service data and repeated transmission of data do not occur, and the availability of the service discovery system is improved.
Further, the consistent storage service layer 11 is specifically configured to:
for each other service access point 121, after receiving the current serial number to be compared of the other service access points 121, obtaining a current maximum target global serial number locally corresponding to the current time;
recording the sequence number lacking from the current maximum target global sequence number as a global sequence number to be synchronized, and feeding back each global sequence number to be synchronized and corresponding service online data as service data to be synchronized to the other service access points 121;
and the global sequence numbers to be synchronized at least comprise target global sequence numbers corresponding to the first service.
The above definition of the embodiment gives a specific implementation manner of the consistent storage service layer 11 for determining the service data to be synchronized. The other service access point 121 is a service access point 121 that transmits service presence data in the service access layer 12, and one service access point 121 is equivalent to the other service access point 121 when broadcasting the service presence data write notification, and if it also receives the service presence data write notification, it is equivalent to the other service access point 121.
The above-described operation of the present embodiment is applicable to the execution of the coherent storage service layer 11 for each of the other service access points 121. It can be seen that the consistency storage service layer 11 may determine, by comparing the received current serial number to be compared with the current maximum target global serial number, which service online data is newly added by the consistency storage service layer 11 with respect to the other service access point 121 by comparing the determined global serial number to be synchronized (i.e., the serial number determined by the consistency storage service layer 11 in the other service access point 121), so that the incremental serial number and the service online data corresponding to the incremental serial number may be determined as the service data to be synchronized.
Further, the other service access points 121 are further configured to:
receiving the service data to be synchronized correspondingly fed back by the consistent storage service layer 11, and feeding back each data to be synchronized to each accessed second service, so that the service online data of the first service is synchronized in each accessed second service.
The present embodiment also performs the above-mentioned limitation on the functions of each service access point 121 in the service access layer 12, and it can be known that the above-mentioned limitation is directed to all service access points 121 that feed back the service data to be synchronized by the consistency storage service layer 11.
For the service access point 121 that has received the service data to be synchronized, a plurality of second services created on the server may have been accessed on the service access point 121 within a relatively current historical time, and thus, after receiving the service data to be synchronized, the service access point 121 may actively feed back the service data to be synchronized to each second service accessed on the service access point in addition to performing local storage, so that the second service associated with the service access point 121 may directly implement synchronization with the service data corresponding to other services through the updated data copy of the service access point 121.
Further, the other service access points 121 are further configured to:
the information receiving unit is used for receiving the service data to be synchronized correspondingly fed back by the consistency storage service layer 11 and locally storing the service data;
and the data feedback unit is used for determining a reference global sequence number currently possessed by the third service after receiving a data synchronization request sent by the accessed third service, and sending service data to be fed back to the third service according to the maximum global sequence number so as to synchronize the service online data of the first service in the accessed third service.
The above functional description of this embodiment also provides another functional limitation of each service access point 121 in the service access layer 12, specifically, the service access point 121 in the service access layer 12 may include an information receiving unit and a data feedback unit, and after receiving the service data to be synchronized, the information receiving unit may first store the service data to be synchronized, so as to update the data copy, and the service access point 121 does not actively push the service (referred to as a third service) that accesses the service discovery system through the service access point 121. But waits for the accessed third service to send a data synchronization request to the data feedback unit, and performs synchronous feedback of service data to the third service based on the data synchronization request.
In this embodiment, the third service may be a service that has just accessed a certain service access point 121, or may be a service that has already accessed the service access point 121 but cannot passively receive service data to be synchronized obtained when the data copy of the service access point 121 is updated because the service access point 121 does not have a long connection with the service access point 121. Therefore, when the third service needs to be consistent with service data of other services, a data synchronization request may be actively sent to the service access point 121, where the data synchronization request includes a reference global sequence number currently owned by the third service, and the reference global sequence number may be understood as a target global sequence number that is a maximum sequence number value in service data currently existing on the third service. The data feedback unit can determine the service data to be fed back to the third service through the reference global sequence number.
Further, the data feedback unit is specifically configured to:
receiving a data synchronization request sent by an accessed third service, and acquiring a reference global sequence number currently possessed by the third service and contained in the data synchronization request;
extracting a current maximum global sequence number locally stored at the current moment, and determining an increment sequence number determined by the reference global sequence number relative to the current maximum global sequence number;
and extracting the service online data corresponding to each increment serial number from the local storage to form service data to be fed back and sending the service data to the third service.
In this embodiment, a specific operation manner of the data feedback unit is given, and it can be known that, after receiving a data synchronization request of a third service, the data feedback unit in the service access point 121 may first obtain a reference global sequence number from the data synchronization request, then may select a current maximum global sequence number at the current time from the service data stored in the data feedback unit, and similarly may compare the reference global sequence number with the current maximum global sequence number, thereby determining an increment sequence number of the reference global sequence number relative to the current maximum global sequence number, and finally may determine service online data corresponding to each increment sequence number in the local storage and feed the service online data back to the third service as data to be fed back.
Through the above operation of this embodiment, when the third service needs to be synchronized with data of other services, the service data corresponding to each target global sequence number in the sequence number difference currently existing can be pulled from the service access point, thereby avoiding the pulling operation of all service data, and thus reducing the resource occupation of the system in the service discovery operation. In addition, each service access point in the service discovery system provided by this embodiment also implements synchronization with service data of a consistent storage service layer through the functions of the service access point, and even if some service access points which are down exist, the service accessed to the service access point can be re-accessed to any other service access points, and the availability of the service is continuously ensured.
Example two
Fig. 2 is a flowchart showing an example implementation of the method for performing service data management by a service discovery system in the second embodiment of the present invention, where the method is applied to the case of managing service data in a distributed system with multiple network partitions in a global internet dimension. The method may be performed by the service discovery system provided in the first embodiment of the present invention.
According to the description of the service discovery system in the above embodiment, it can be known that the service discovery system specifically includes: the service access layer comprises at least two service access points.
The service data management method provided in this embodiment two may be specifically considered to be implemented through cooperation of layers in the service discovery system, so as to ensure that services created on servers in each network partition can implement service data synchronization in the global internet dimension.
It should be noted that each service access point in this embodiment may perform the following operations according to the following steps, which is described in fig. 2 by taking only one first service as an example, and the remaining service access points in the service access layer, which are relative to the service access point accessed by the first service, are described as other service access points.
As shown in fig. 2, a service data management method provided in the second embodiment of the present invention specifically includes the following operations:
s201, a service access point receives a registration request of the created first service to access the first service, and writes service online data of the first service into a consistency storage service layer.
In this embodiment, the first service may specifically be a service that is newly created on a server in any network partition to implement a certain service function, or may also be a service that has been created and accessed to the service discovery system through a certain service access point, but a new service access point may be selected again for access due to the downtime of the service access point that is relied on.
In this embodiment, the service access point may be any access point selected by the first service in the service access layer, and in addition, the first service in this embodiment is only one name difference for the service in terms of expression, because the service access layer includes at least two service access points, each service access point may perform the operation of this step when the first service is accessed.
For example, the service access point that is the subject of this step may allow the first service to access after receiving the registration request sent by the service on the server, and may write the service online data of the first service into the consistent storage service layer after the first service is successfully accessed, and in addition, the service access point may also feed back a registration reply that the access is successful to the first service.
S202, after receiving the service on-line data, the consistency storage service layer generates a corresponding target global sequence number, and stores the target global sequence number and the service on-line data in an associated manner.
In this embodiment, the consistent storage service layer may be formed based on nodes in a small physical range selected from nodes constituting the distributed system, and is mainly used to perform global storage and management on service data of services in each network partition, where in this embodiment, some nodes constituting the consistent storage service may be selected according to regional distribution of network nodes.
In this embodiment, the target global sequence number may be regarded as a unique identifier of one piece of service data (e.g., service online data) of the associated service in the entire global service data. The consistency storage service layer as the execution main body of the step generates corresponding target global serial numbers with uniqueness for each service data written by the service access point to realize the consistency storage of the service online data of each service in the service discovery coefficient, and provides necessary premise for the synchronization of the service data under the global internet dimension.
In the service data management method provided by the second embodiment of the present invention, the service access point in the service access layer does not limit the data consistency of the accessed service, the consistency storage service layer only includes a node in a small physical range, and the consistency storage of the service data associated with the service in the small physical range can be realized by generating the global sequence number for the written service online data.
On the basis of the above embodiment, as shown in fig. 2, the present embodiment further optimizes and includes:
s203, the service access point broadcasts the online data writing notification of the first service to other service access points in the service access layer.
For example, after the consistency storage service layer performs setting of the global sequence number and storage based on the global sequence number on the service online data of the first service, the service access point may immediately broadcast a message to other service access points in the service layer, that is, notify the other service access points by sending an online data write notification to the other service access points: the service online data of the first service is already written into the consistency storage service layer, and the service online data needing to be written can be acquired from the consistency storage service layer.
It can be understood that the service access point in which the service online data corresponding to the first service is written may also be used as one of other service access points to obtain the service online data of the first service accessed through the other service access points.
And S204, after receiving the online data writing notification, each of the other service access points determines a current sequence number to be compared of a local cache and feeds the sequence number back to the consistency storage service layer.
For example, in order to synchronize the service online data of the first service to the local, each of the other service access points may determine a current sequence number to be compared according to a locally stored data copy, and feed back the sequence number to the executive storage service layer. And the current serial number to be compared is equivalent to a target global serial number with the maximum serial number value corresponding to the current moment determined from the locally stored data copy.
S205, the consistency storage service layer feeds back service data to be synchronized to the corresponding service access point according to the received current serial numbers to be compared, so that the service online data of the first service is synchronized to other service access points in the service access layer.
In this embodiment, the current serial numbers to be compared, sent by different other service access points to the consistency storage service layer, are different, and the consistency storage service layer serving as the execution subject of this step may perform, on each other service access point, the determination and feedback operation of the service data to be synchronized based on this step.
For example, the service data to be synchronized may be understood as service data to be updated and added to the data copy, where the difference between the corresponding other service access point and the data stored on the consistent storage service layer is smaller. The consistency storage service layer can compare the current serial number to be compared fed back by other service access points with the current maximum target global serial number when the consistency storage service layer receives the current serial number to be compared, so that the consistency storage service layer can determine which new service online data are added on the consistency storage service layer relative to the service access points, and the newly added service online data are fed back to the corresponding service access points as the service data to be synchronized, so that the synchronization of the service online data of the first service on the service access points is realized.
The consistency of global service data is achieved through the cooperation of the consistency storage service layer in S203 to S205 and each service access point in the service access layer, and in the method provided by this embodiment, the situations of loss of service data and repeated transmission of data are avoided, thereby reflecting the high availability of the service discovery system.
Meanwhile, as a further limitation of the method provided by this embodiment, as shown in fig. 2, the service data management method provided by this embodiment further includes:
and S206, the other service access points also respectively receive the service data to be synchronized correspondingly fed back by the consistency storage service layer, and feed back the data to be synchronized to the accessed second services, so that the service online data of the first service is synchronized in the accessed second services.
The execution subject of this step is a service access point in the service access layer, and for the service access point that has executed the operation of S204, it may receive the service data to be synchronized fed back by the consistency storage service layer through this step, and then may actively push the service data to be synchronized to the second service accessed through it, so that the second service associated with this service access point may directly implement synchronization with the service data corresponding to other services through the data copy updated by the service access point. The second service is specifically understood to be a service created in a server included in the network partition and having access to a service access point, and the number of the second services may be multiple.
In addition, as a further limitation of the method provided by this embodiment, as shown in fig. 2, the service access point in the service data management method provided by this embodiment may further perform the following steps:
and S207, receiving the service data to be synchronized fed back correspondingly by the consistency storage service layer by each other service access point and locally storing the service data.
For example, this step and the following S208 and the above S206 may be actually regarded as two different operations performed by the service access point on the received service data to be synchronized, and the two operations may be performed alternatively or both, which are mainly related to the connection status of the accessed service, for example, the operation of S206 may be performed after S205, and the operations of S207 and S208 may also be performed after S205 in this embodiment.
Meanwhile, in this step, the service access point may directly perform local storage after receiving the service data to be synchronized, and does not actively push the service data to be synchronized to the service (referred to as a third service) accessed to the service access point, and only updates the data copy of the service access point.
And S208, after receiving a data synchronization request sent by the accessed third service, each of the other service access points determines a reference global sequence number currently possessed by the third service, and feeds back service data to be synchronized to the third service according to the maximum global sequence number, so that the service online data of the first service is synchronized in the accessed third service.
In addition to the above steps, in this step, the service access point performs synchronous feedback of service data to the third service based on the data synchronization request after receiving the data synchronization request sent to the service access point by the accessed third service. The third service may be a service that has just accessed a certain service access point, or a service that has already accessed the service access point but cannot passively receive service data to be synchronized obtained when the service access point data copy is updated because of no long connection with the service access point, and may actively send a data synchronization request to the service access point when the data synchronization request needs to be consistent with service data on other services.
Specifically, the implementation of the above steps can be described as follows: the service access point firstly obtains a reference global sequence number from the data synchronization request, then can select a current maximum global sequence number at the current moment from the service data stored in the service access point, and can compare the reference global sequence number with the current maximum global sequence number, thereby determining an increment sequence number of the reference global sequence number relative to the current maximum global sequence number, and finally can determine the service online data corresponding to each increment sequence number in the local storage and feed the service online data as the data to be fed back to the third service.
In the second embodiment, the operation of the service access point performing service data synchronization on the service accessed to the service access point through the acquired data to be synchronized is provided, and it can be seen that, when the service accessed to the service access point needs data synchronization, only incremental service data which is different in the data copy in the service access point needs to be pulled or received, and the full amount of service data does not need to be acquired, so that the resource occupation of the system in the service discovery operation is reduced. By the service data management method performed by the service discovery system, the problem that the service data is difficult to realize consistency due to network isolation in a network partition is solved, the problems that service data synchronization cannot be effectively performed on the service connected with the service access point after the service access point is down and a large amount of computing resources are occupied during data synchronization are solved, incremental synchronization of the data is ensured, and the operation cost of the system is effectively reduced.
EXAMPLE III
Fig. 3 is a schematic diagram of a hardware structure of a server according to a third embodiment of the present invention, specifically, the server is used as a service access point in a service discovery system according to the first embodiment of the present invention, and specifically may include: a processor and a storage device. At least one instruction is stored in the storage device, and the instruction is executed by the processor, so that the server can perform the operation steps corresponding to the service access point in the service data management method provided by the second embodiment.
Referring to fig. 3, the server may specifically include: a processor 30, a storage device 31, a display 32, an input device 33, an output device 34, and a communication device 35. The number of the processors 30 in the server may be one or more, and one processor 30 is taken as an example in fig. 3. The number of the storage devices 31 in the server may be one or more, and one storage device 31 is taken as an example in fig. 3. The processor 30, the storage device 31, the display 32, the input device 33, the output device 34, and the communication device 35 of the server may be connected by a bus or other means, and fig. 3 illustrates the connection by a bus as an example.
The storage device 31, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and modules. The storage device 31 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating device, an application program required for at least one function; the storage data area may store data created according to the use of the server, and the like. Further, the storage device 31 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage device 31 may further include memory located remotely from the processor 30, which may be connected to a server over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
In general, the display screen 32 is used for displaying data according to instructions of the processor 30, and is also used for receiving touch operations applied to the display screen 32 and sending corresponding signals to the processor 30 or other devices. Optionally, when the display screen 32 is an infrared screen, the display screen further includes an infrared touch frame, and the infrared touch frame is disposed around the display screen 32, and may also be configured to receive an infrared signal and send the infrared signal to the processor 30 or another server.
And a communication device 35 for establishing communication connection with other servers, which may be a wired communication device and/or a wireless communication device.
The input device 33 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the server, and may also be a camera for acquiring images and a sound pickup apparatus for acquiring audio in video data. The output device 34 may include a video device such as a display screen and an audio device such as a speaker. It should be noted that the specific composition of the input device 33 and the output device 34 can be set according to actual conditions.
The processor 30 executes various functional applications and data processing of the server, that is, implements functional operations of the service access point in the service discovery system described above, by executing software programs, instructions and modules stored in the storage device 31.
Specifically, in the embodiment, when the processor 30 executes one or more programs stored in the storage device 31, the following is specifically executed, for example: receiving a registration request of the created first service to access the first service, and writing service online data of the first service into a consistent storage service layer; or broadcasting an online data write notification of the first service to other service access points in a service access layer; or after receiving the online data write-in notification, determining a current sequence number to be compared of a local cache and feeding back the current sequence number to be compared to the consistency storage service layer; or receiving service data to be synchronized correspondingly fed back by the consistent storage service layer, and feeding back each piece of the service data to be synchronized to each accessed second service, so that the service online data of the first service is synchronized in each accessed second service and the like.
Example four
Fig. 4 is a schematic diagram of a hardware structure of a server according to a fourth embodiment of the present invention, specifically, the server is configured to form a consistent storage service layer in a service discovery system provided by the first embodiment of the present invention, and specifically, the server may include: a processor and a storage device. At least one instruction is stored in the storage device, and the instruction is executed by the processor, so that the server can execute the operation steps corresponding to the consistent storage service layer in the service data management method provided by the second embodiment.
Referring to fig. 4, the server may specifically include: a processor 40, a storage device 41, a display 42, an input device 43, an output device 44, and a communication device 45. The number of the processors 40 in the server may be one or more, and one processor 40 is taken as an example in fig. 4. The number of the storage devices 41 in the server may be one or more, and one storage device 41 is taken as an example in fig. 4. The processor 40, the storage device 41, the display 42, the input device 43, the output device 44 and the communication device 45 of the server may be connected by a bus or other means, and fig. 4 illustrates the connection by a bus as an example.
The storage device 41, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and modules. The storage device 41 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating device, an application program required for at least one function; the storage data area may store data created according to the use of the server, and the like. Further, the storage device 41 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, storage device 41 may further include memory located remotely from processor 40, which may be connected to a server over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
In general, the display screen 42 is used for displaying data according to instructions from the processor 40, and is also used for receiving touch operations applied to the display screen 42 and sending corresponding signals to the processor 40 or other devices. Optionally, when the display screen 42 is an infrared screen, the display screen further includes an infrared touch frame, and the infrared touch frame is disposed around the display screen 42, and may also be configured to receive an infrared signal and send the infrared signal to the processor 40 or another server.
And a communication device 45 for establishing communication connection with other servers, which may be a wired communication device and/or a wireless communication device.
The input means 43 may be used for receiving input numeric or character information and generating key signal inputs related to user settings and function control of the server, and may be a camera for acquiring images and a sound pickup device for acquiring audio in video data. The output device 44 may include a video device such as a display screen and an audio device such as a speaker. It should be noted that the specific composition of the input device 43 and the output device 44 can be set according to actual conditions.
The processor 40 executes various functional applications and data processing of the server, that is, the functional operation of the coherent storage service layer in the service discovery system described above, by executing software programs, instructions, and modules stored in the storage device 41.
Specifically, in the embodiment, when the processor 40 executes one or more programs stored in the storage device 41, the following operations are specifically implemented: generating a corresponding target global sequence number after receiving the service on-line data, and storing the target global sequence number and the service on-line data in an associated manner; or, feeding back service data to be synchronized to the corresponding service access point according to the received current serial numbers to be compared, so that the service online data of the first service is synchronized to other service access points in the service access layer.
Embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform the embodiments of the present invention. Illustratively, the foregoing embodiments include: a service access point receives a registration request of the created first service to access the first service, and writes service online data of the first service into a consistency storage service layer; and the consistency storage service layer generates a corresponding target global sequence number after receiving the service on-line data, and stores the target global sequence number and the service on-line data in an associated manner.
It should be noted that, for the server and the storage medium embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
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 present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments 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 service discovery system, comprising: the service access layer comprises at least two service access points;
the service access point is used for receiving a registration request of the created first service to access the first service and writing service online data of the first service into the consistent storage service layer;
and the consistency storage service layer is used for generating a corresponding target global sequence number after receiving the service on-line data, and storing the target global sequence number and the service on-line data in an associated manner.
2. The system of claim 1, wherein the consistent storage service layer comprises:
and the sequence number determining unit is used for determining a locally stored current maximum target global sequence number after receiving the service on-line data, and adding a determined value to the current maximum target global sequence number to be used as a target global sequence number of the first service.
3. The system of claim 1,
the service access point is further configured to broadcast an online data write notification of the first service to other service access points in the service access layer;
the other service access points are respectively used for determining the current sequence number to be compared of the local cache and feeding back the current sequence number to be compared to the consistency storage service layer after receiving the online data writing notification;
the consistency storage service layer is further configured to feed back service data to be synchronized to the corresponding service access point according to the received current serial numbers to be compared, so that the service online data of the first service is synchronized to other service access points in the service access layer.
4. The system of claim 3, wherein the consistent storage service layer is specifically configured to:
for each other service access point, after receiving the current serial number to be compared of the other service access points, acquiring the current maximum target global serial number locally corresponding to the current moment;
recording the sequence number of the current serial number to be compared, which is lack relative to the current maximum target global sequence number, as a global sequence number to be synchronized, and feeding back each global sequence number to be synchronized and corresponding service online data as service data to be synchronized to the other service access points;
and the global sequence numbers to be synchronized at least comprise target global sequence numbers corresponding to the first service.
5. The system of claim 3, wherein the other service access points are further configured to:
and receiving the service data to be synchronized correspondingly fed back by the consistent storage service layer, and feeding back each piece of the service data to be synchronized to each accessed second service, so that the service online data of the first service is synchronized in each accessed second service.
6. The system of claim 3, wherein the other service access points are further configured to:
the information receiving unit is used for receiving the service data to be synchronized correspondingly fed back by the consistency storage service layer and locally storing the service data;
and the data feedback unit is used for determining a reference global sequence number currently possessed by the third service after receiving a data synchronization request sent by the accessed third service, and sending service data to be fed back to the third service according to the maximum global sequence number so as to synchronize the service online data of the first service in the accessed third service.
7. The system of claim 6, wherein the data feedback unit is specifically configured to:
receiving a data synchronization request sent by an accessed third service, and acquiring a reference global sequence number currently possessed by the third service and contained in the data synchronization request;
extracting a current maximum global sequence number locally stored at the current moment, and determining an increment sequence number determined by the reference global sequence number relative to the current maximum global sequence number;
and extracting the service online data corresponding to each increment serial number from the local storage to form service data to be fed back and sending the service data to the third service.
8. A service data management method, performed by the service discovery system of any one of claims 1 to 7, comprising:
a service access point receives a registration request of the created first service to access the first service, and writes service online data of the first service into a consistency storage service layer;
and the consistency storage service layer generates a corresponding target global sequence number after receiving the service on-line data, and stores the target global sequence number and the service on-line data in an associated manner.
9. The method of claim 8, further comprising:
the service access point broadcasts an online data writing notification of the first service to other service access points in a service access layer;
after receiving the online data write-in notification, the other service access points determine the current sequence number to be compared of the local cache and feed back the current sequence number to the consistency storage service layer;
and the consistency storage service layer feeds back service data to be synchronized to the corresponding service access point according to the received current serial numbers to be compared so as to synchronize the service online data of the first service to other service access points in the service access layer.
10. The method of claim 9, further comprising:
and the other service access points also respectively receive the service data to be synchronized correspondingly fed back by the consistency storage service layer and feed back the data to be synchronized to the accessed second services, so that the service online data of the first service is synchronized in the accessed second services.
11. The method of claim 9, further comprising:
other service access points receive the service data to be synchronized fed back correspondingly by the consistency storage service layer and locally store the service data;
after receiving a data synchronization request sent by the accessed third service, the other service access points determine a reference global sequence number currently possessed by the third service, and feed back service data to be synchronized to the third service according to the maximum global sequence number, so that the service online data of the first service is synchronized in the accessed third service.
12. A server configured to serve as a service access point in the service discovery system according to any one of claims 1 to 7, comprising:
one or more processors;
storage means for storing one or more programs;
the one or more programs are executable by the one or more processors to cause the one or more processors to perform the operational steps corresponding to the service access point in the service data management method according to any one of claims 8 to 10.
13. A server, for constituting a consistent storage service layer in the service discovery system of any one of claims 1 to 7, comprising:
one or more processors;
storage means for storing one or more programs;
the one or more programs are executed by the one or more processors, so that the one or more processors are used for executing the operation steps corresponding to the consistency service layer in the service data management method according to any one of claims 8 to 10.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a service data management method according to any one of claims 8 to 10.
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