JP6204299B2 - Subscriber information recovery system, subscriber information management device, and subscriber information recovery method - Google Patents

Description

  The present invention relates to a technique for recovering data when a failure occurs.

  In a system including a subscriber data management device that manages an original subscriber data and a service providing device that provides services by referring to the subscriber data, the service providing device stores subscriber data managed by the subscriber data management device. Maintain and synchronize and provide services using the subscriber data that is retained. In addition, the service providing device generates a backup file of subscriber data at a certain point of time, stores it in a separate area from the subscriber data used for service provision, and backs up when a failure occurs in the service providing device. Restore the file by restoring the subscriber data.

  When the backup file is restored, the subscriber data held by the service providing device may not match the subscriber data managed by the subscriber data management device. Therefore, the service providing device receives the latest subscriber data from the subscriber. It must be obtained from the data management device. At this time, the service providing apparatus notifies the subscriber data management apparatus of the backup generation time, which is the time when the backup file was generated, and the subscriber data management apparatus transmits the subscriber data updated after the backup generation time to the service providing apparatus. To do. By holding the update time information in association with the subscriber data managed by the subscriber data management apparatus, the subscriber data updated after the backup generation time can be easily specified. However, how to identify the subscriber data deleted from the subscriber data management apparatus becomes a problem.

  With respect to this problem, in Patent Document 1, all subscriber IDs managed by the subscriber data management apparatus and subscriber data updated after the backup generation time are transmitted to the service providing apparatus. An example of specifying the deleted data by notifying all the subscriber IDs will be described with reference to FIG.

  When a failure occurs in the service providing apparatus (step S51), the service providing apparatus restores the backup file (step S52) and sets the backup generation time to the subscriber data in order to acquire the updated data after generating the backup file. The management device is notified (step S53).

  The subscriber data management device acquires all subscriber IDs and subscriber data updated after the backup generation time, and notifies the service providing device (steps S54 and S55).

  The service providing apparatus reflects the updated subscriber data among the notified data in the subscriber data held by itself, and deletes the data for which the subscriber ID is not notified from the subscriber data held by itself. The service provision is resumed (steps S56 and S57).

JP 2013-178610 A

  However, in the conventional method of notifying the service providing apparatus of all the subscriber IDs managed by the subscriber data management apparatus, the service providing apparatus needs to collate all the held subscriber IDs. The amount of processing is large, and it may take some time to resume service provision.

  The present invention has been made in view of the above, and an object of the present invention is to shorten the time until data recovery of a service providing apparatus when a failure occurs in the service providing apparatus.

A subscriber information recovery system according to a first aspect of the present invention relates to a subscriber information management apparatus that manages an original subscriber information by associating a subscriber identifier, an update time, and a deletion flag indicating whether or not the information has been deleted, A subscriber information recovery system comprising a service providing apparatus that holds the subscriber information synchronized with a subscriber information management apparatus and provides a service using the subscriber information, wherein the service providing apparatus includes Backup means for backing up subscriber information to generate backup data, and an update information acquisition request including a backup generation time indicating a time at which the backup data is generated after the subscriber information is restored using the backup data. Update information requesting means for transmitting to the subscriber information management device and the backup generation from the subscriber information management device The subscriber information of the subscriber information updated after the time and the subscriber identifier of the deleted subscriber information are acquired, and the acquired subscriber information is reflected in the restored subscriber information and the acquired subscriber is acquired. Subscriber information update means for deleting the subscriber information corresponding to the identifier from the restored subscriber information, and the subscriber information management device is configured to input an order for deleting the subscriber information And a subscriber information deletion means for turning on the deletion flag associated with the subscriber information to be deleted, and updated after the backup generation time when the update information acquisition request is received from the service providing apparatus. is provided with, and update data notifying means for transmitting the subscriber identifier of the subscriber information and the deletion flag is on in the service providing apparatus, the service providing apparatus When the backup data is generated, the backup means notifies the subscriber information management apparatus of a backup generation notification indicating that the subscriber information has been backed up, and the subscriber information deletion means of the subscriber information management apparatus includes: The subscriber information with the deletion flag turned on is deleted when the backup generation notification is received .

A subscriber information management apparatus according to a second aspect of the present invention is a subscriber information management apparatus that manages the original subscriber information used by a service providing apparatus that provides a service, and includes a subscriber identifier, an update time, and a deletion The deletion means associated with the subscriber information to be deleted when the storage means storing the subscriber information in association with the deletion flag indicating whether the subscriber information has been deleted or when an order for deleting the subscriber information is input Subscriber information deletion means for turning on the flag, and the subscriber information and the deletion flag updated after the time indicated by the time information when receiving an update information acquisition request including the time information from the service providing apparatus. There comprising update data notifying means for transmitting the subscriber identifier on the service providing device, wherein the subscriber information deletion unit, said service providing apparatus the pressure User information when it receives a backup generation notification indicating that it has backed up, and said deletion flag deletes the subscriber information on.

A subscriber information recovery method according to a third aspect of the present invention relates to a subscriber information management apparatus that manages an original subscriber information by associating a subscriber identifier, an update time, and a deletion flag indicating whether or not the information has been deleted, A subscriber information recovery method executed by a subscriber information recovery system comprising a service providing apparatus that holds the subscriber information synchronized with a subscriber information management apparatus and provides a service using the subscriber information. A step of turning on the deletion flag associated with the subscriber information to be deleted when an order for deleting the subscriber information is entered by the subscriber information management device; and The update information including the backup generation time indicating the time when the backup data is generated after the subscriber information is restored using the backup data. A step of transmitting an acquisition request to the subscriber information management device; and the subscription information updated after the backup generation time when the update information acquisition request is received from the service providing device by the subscriber information management device. Transmitting the subscriber information and the subscriber identifier whose deletion flag is on to the service providing device, and the subscriber information updated from the subscriber information management device by the service providing device after the backup generation time. The subscriber identifier of the deleted subscriber information is acquired, the acquired subscriber information is reflected in the restored subscriber information, and the subscriber information corresponding to the acquired subscriber identifier is recovered. a step of deleting from the subscriber information after, by the service providing device, back up the subscriber information Generating backup data and notifying the subscriber information management device of a backup generation notification indicating that the subscriber information has been backed up; and when receiving the backup generation notification by the subscriber information management device And deleting the subscriber information with the deletion flag turned on .

  According to the present invention, when a failure occurs in a service providing apparatus, it is possible to shorten the time until data recovery of the service providing apparatus.

It is a whole block diagram containing the subscriber data management apparatus and service provision apparatus in this Embodiment. It is a sequence diagram which shows the flow of a process which restores the subscriber data of a service provision apparatus when a failure generate | occur | produces in a service provision apparatus. It is a sequence diagram which shows the flow of the process which a subscriber data management apparatus deletes the data provided with the deletion flag. It is a sequence diagram which shows the flow of a process which restores the subscriber data of the conventional service provision apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall configuration diagram including a subscriber data management apparatus and a service providing apparatus according to the present embodiment.

  The subscriber data management apparatus 1 is an apparatus that manages the original subscriber data. The service providing device 2 is a device that provides a service according to subscriber data held by the service providing device 2 itself. The service providing device 2 is, for example, a session control server that controls a subscriber's session with reference to the subscriber's contract information. A plurality of service providing apparatuses 2 are connected to the subscriber data management apparatus 1 via a network. The subscriber data management device 1 manages the subscriber data used by each of the plurality of service providing devices 2 by assigning the identifier of the service providing device 2 to the subscriber data. It is required that the subscriber data managed by the subscriber data management device 1 and the subscriber data held by the service providing device 2 match. This is because, if the subscriber data does not match, a situation different from the contract occurs, such as a situation where the service is provided but the service is not actually provided.

  The subscriber data management apparatus 1 shown in FIG. 1 includes a data update unit 11, a data notification unit 12, and a subscriber data storage unit 13.

  The data update unit 11 stores the input subscriber data, and changes and deletes the stored subscriber data. When there is a change in the subscriber data managed by the subscriber data management device 1, the corresponding service providing device 2 is notified and the subscriber data held by the service providing device 2 is also updated. In the present embodiment, when an order for deleting subscriber data is entered, the subscriber data management apparatus 1 deletes the subscriber data by turning on the deletion flag of the subscriber data to be deleted, The service providing apparatus 2 actually deletes the subscriber data to be deleted. Further, when the data updating unit 11 receives a notification that the backup has been generated from the service providing apparatus 2, the data updating unit 11 deletes the subscriber data of the corresponding service providing apparatus 2 and the deletion flag being ON.

  The data notification unit 12 replies to the service providing apparatus 2 with the update information of the subscriber data updated after the backup generation time in response to the latest data inquiry from the service providing apparatus 2 at the time of restoration. In this embodiment, when replying update information, for subscriber data that is deleted after the backup generation time and the deletion flag is ON, only the subscriber ID of the subscriber data is notified.

  The subscriber data storage unit 13 stores subscriber data. In the example illustrated in FIG. 1, as subscriber data stored in the subscriber data storage unit 13, a subscriber ID, data, update time, service device ID (service providing device identifier), and deletion flag are illustrated. .

  The service providing apparatus 2 includes a backup / restore unit 21, a subscriber data storage unit 22, and a backup data storage unit 23.

  The backup / restore unit 21 backs up the subscriber data stored in the subscriber data storage unit 22 to the backup data storage unit 23 at the time of backup, and sets the backup generation time, which is the time when the backup was executed, to the subscriber data management device 1 is notified. Further, the backup / restore unit 21 restores the subscriber data backed up in the backup data storage unit 23 to the subscriber data storage unit 22 and transmits the backup generation time to the subscriber data management device 1 at the time of restoration. The data updated after the backup is inquired, and the subscriber data stored in the subscriber data storage unit 22 is synchronized with the subscriber data managed by the subscriber data management apparatus 1.

  The subscriber data storage unit 22 stores subscriber data that is referred to when the service is provided.

  The backup data storage unit 23 stores a backup of subscriber data stored in the subscriber data storage unit 22.

  The units included in the subscriber data management device 1 and the service providing device 2 may be configured by a computer including an arithmetic processing device, a storage device, and the like, and the processing of each unit may be executed by a program. This program is stored in a storage device included in the subscriber data management apparatus 1 and the service providing apparatus 2, and can be recorded on a recording medium such as a magnetic disk, an optical disk, or a semiconductor memory, or provided through a network. .

  Next, operations of the subscriber data management device and the service providing device will be described.

  First, subscriber data recovery processing will be described. FIG. 2 is a sequence diagram showing a flow of processing for recovering subscriber data of the service providing apparatus 2 when a failure occurs in the service providing apparatus 2.

  When a failure occurs in the service providing apparatus 2 (step S11), the service providing apparatus 2 restores the subscriber data that has been backed up (step S12). In the example of FIG. 2, the backup generation time is set to 10/10 4:00. Therefore, the data with the subscriber IDs A and C are deleted and updated after the backup generation time, so that the old data is rewound.

  Then, the service providing apparatus 2 inquires of the subscriber data management apparatus 1 about the updated data after the backup generation time (step S13). At this time, the service providing apparatus 2 notifies the identifier (# 1) of the service providing apparatus 2 and the backup generation time (10/10 4:00).

  The subscriber data management device 1 uses the notified identifier of the service providing device 2 and the backup generation time to notify the subscriber data deleted after the backup generation time and the updated subscriber data for the service providing device 2 And the service providing apparatus 2 is notified (steps S14 and S15). Specifically, all subscriber IDs to which a deletion flag is given from the subscriber data held by the subscriber data management apparatus 1, and subscriber IDs, data, and update times whose update times are later than the backup generation time are serviced. Extracted as data to be returned to the providing device 2. In the example of FIG. 2, as the data notified by the subscriber ID of A whose deletion flag is ON, the subscriber ID of C updated after the backup generation time, and the update time (10/10 8:00) Extracted. For the deleted data, only the subscriber ID is transmitted.

  The service providing apparatus 2 reflects the latest subscriber data received from the subscriber data management apparatus 1 in the subscriber data held by the service providing apparatus 2 and resumes providing the service (steps S16 and S17). Specifically, data notified only of the subscriber ID is deleted from the subscriber data storage unit 22, and data notified of the subscriber ID, data, and update time is data stored in the subscriber data storage unit 22. Is updated with the received data. In the example of FIG. 2, the data of A's subscriber ID for which only the subscriber ID has been notified is deleted from the subscriber data storage unit 22 and the subscriber ID, data, and update time of C's subscriber ID for which the update time has been notified. Data is updated with the notified data.

  Next, subscriber data deletion processing will be described. FIG. 3 is a sequence diagram showing a flow of processing in which the subscriber data management apparatus 1 deletes data with a deletion flag. The deletion of data by the subscriber data management device 1 is performed at the timing when the service providing device 2 backs up.

  The service providing device 2 backs up the subscriber data stored in the subscriber data storage unit 22 to the backup data storage unit 23 (step S21), and the backup generation time (here, 10/12 4:00). The identifier (# 1) of the service providing device 2 is notified to the subscriber data management device 1 (step S22).

  The subscriber data management device 1 deletes the data whose deletion flag is ON and returns a response to the service providing device 2 (steps S23 and S24). In the example of FIG. 3, the subscriber data whose subscriber ID is A with the deletion flag turned ON before the backup generation time is deleted. Even if the service providing apparatus 2 subsequently fails and the subscriber data is rewound, the subscriber data with the subscriber ID A is deleted in the backup data of the service providing apparatus 2 as well. The subscriber data whose ID is A will not be restored.

  As described above, according to the present embodiment, the subscriber data management device 1 sets the deletion flag of the deletion target subscriber data to ON when the order for deleting the subscriber data is input. In the case where the subscriber data is deleted, and the service providing apparatus 2 acquires the latest data from the subscriber data management apparatus 1 when the subscriber data is restored, the subscriber data management apparatus 1 By notifying the subscriber data updated after the backup generation time notified from the subscriber ID and the subscriber ID of the subscriber data whose deletion flag is ON, the service providing apparatus 2 notifies about the deletion of the subscriber data. Since it is only necessary to carry out the processing of the subscriber ID, the subscriber data of the service providing apparatus can be recovered in a shorter time.

  According to the present embodiment, when the service providing apparatus 2 notifies the subscriber data management apparatus 1 that the backup data has been generated, the subscriber data management apparatus 1 actually transmits the subscriber data whose deletion flag is ON. By deleting, unnecessary subscriber data can be deleted at an optimal timing, and the use of the memory area can be expected to be suppressed.

DESCRIPTION OF SYMBOLS 1 ... Subscriber data management apparatus 11 ... Data update part 12 ... Data notification part 13 ... Subscriber data storage part 2 ... Service provision apparatus 21 ... Backup / restoration part 22 ... Subscriber data storage part 23 ... Backup data storage part

Claims (3)

A subscriber information management device that manages a subscriber information original by associating a subscriber identifier, an update time, and a deletion flag indicating whether or not the information has been deleted, and holds the subscriber information synchronized with the subscriber information management device And a subscriber information recovery system comprising a service providing device that provides a service using the subscriber information,
The service providing apparatus includes:
Backup means for backing up the subscriber information and generating backup data;
An update information requesting means for transmitting an update information acquisition request including a backup generation time indicating a time at which the backup data was generated after restoring the subscriber information using the backup data to the subscriber information management device;
The subscriber information of the subscriber information updated after the backup generation time and the subscriber identifier of the deleted subscriber information are acquired from the subscriber information management device, and the subscriber information after the acquired subscriber information is restored And subscriber information update means for deleting the subscriber information corresponding to the acquired subscriber identifier from the restored subscriber information, and
The subscriber information management device includes:
Subscriber information deletion means for turning on the deletion flag associated with the subscriber information to be deleted when an order for deleting the subscriber information is entered;
Update data for transmitting, to the service providing apparatus, the subscriber information updated after the backup generation time and the subscriber identifier with the deletion flag turned on when the update information acquisition request is received from the service providing apparatus. And a notification means ,
The backup means of the service providing device notifies the subscriber information management device of a backup generation notification indicating that the subscriber information has been backed up when the backup data is generated,
The subscriber information recovery unit of the subscriber information management apparatus deletes the subscriber information whose deletion flag is on when receiving the backup generation notification . A subscriber information management apparatus that manages an original subscriber information used by a service providing apparatus that provides a service,
Storage means for storing the subscriber information in association with a subscriber identifier, an update time, and a deletion flag indicating whether or not deleted;
Subscriber information deletion means for turning on the deletion flag associated with the subscriber information to be deleted when an order for deleting the subscriber information is entered;
When receiving an update information acquisition request including time information from the service providing apparatus, the service providing apparatus receives the subscriber information updated after the time indicated by the time information and the subscriber identifier with the deletion flag turned on. Update data notification means for transmitting to ,
The subscriber information deletion means deletes the subscriber information whose deletion flag is on when the service providing apparatus receives a backup generation notification indicating that the subscriber information has been backed up. Subscriber information management device. A subscriber information management device that manages a subscriber information original by associating a subscriber identifier, an update time, and a deletion flag indicating whether or not the information has been deleted, and holds the subscriber information synchronized with the subscriber information management device And a subscriber information recovery method executed by a subscriber information recovery system comprising a service providing device that provides a service using the subscriber information,
Turning on the deletion flag associated with the subscriber information to be deleted when an order to delete the subscriber information is entered by the subscriber information management device;
Sending an update information acquisition request including a backup generation time indicating a time when the backup data is generated to the subscriber information management device after restoring the subscriber information using backup data by the service providing device; ,
When the subscriber information management device receives the update information acquisition request from the service providing device, the subscriber information updated after the backup generation time and the subscriber identifier with the deletion flag turned on are Transmitting to the service providing device;
The service providing device acquires the subscriber information of the subscriber information updated after the backup generation time and the subscriber identifier of the deleted subscriber information from the subscriber information management device, and restores the acquired subscriber information Reflecting to the subscriber information after, and deleting the subscriber information corresponding to the acquired subscriber identifier from the restored subscriber information;
Backing up the subscriber information by the service providing device, generating the backup data, and notifying the subscriber information management device of a backup generation notification indicating that the subscriber information has been backed up;
Deleting the subscriber information with the deletion flag turned on when the backup generation notification is received by the subscriber information management device;
A subscriber information recovery method comprising:

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