45results about How to "Guaranteed recoverability" patented technology

The invention relates to a method for storing and accessing file sets under a tree directory structure in a database, which can effectively solve the problems of overall storage and random access when file sets are stored in and extracted from a database system. The technical scheme is as follows: the overall storage extracts the directory structure, file data and attributes of the file sets from a file system to a local memory; organization structure object is serialized; data blocks are stored in the database; the random access recovers the directory structure of the file sets; corresponding files in the database are accessed according to user selection to read out the directory structure data blocks stored in the database; the directory structure data blocks are recovered to data structure objects by reverse serialization; and the information of the directory structure objects are shown to users in the forms of visible file node data structure, directory node data structure and file set directory structure objects. The invention solves the difficult technical problem that files are not supported to be directly stored and randomly accessed in the database in the prior art, thereby having enormous economic and social benefits.

First, the method backs up data of device terminal to device management (DM) server. The said data includes individualization data of software program and device terminal. When data of device terminal are lost or in error, the method can restore the backed data to terminal. When software program at terminal is in error, the method can down load the backed software, as well as installs and configures software in order to recover data and software of device terminal. Storing terminal data in DM server, the invention guarantees recoverability of device terminal data especially private data.

An embodiment of the invention discloses a method for managing private key of user digital certificate, wherein the method comprises the following steps: generating the key pair of ciphered certificate; ciphering the private key in the key pair of ciphered certificate by the ciphering card with the common key in the preset key pair for obtaining digital envelop; authorizing the enciphered certificate by CA, and providing the enciphered certificate and digital envelop to the USB Key of user end; and deciphering the digital envelope according to the private key in the preset key pair for obtaining the private key of ciphered certificate. The embodiment of the invention simultaneously discloses a system for realizing the method. The embodiment of the invention ensures the security of private key of ciphered key in the transmission process. The embodiment of the invention also use KMC common key and KMC administrator common key for enciphering and backing up the private key of ciphered certificate, furthermore backs up the KMC private key and KMC administrator private key, and ensures the backup security and recoverability of private key of enciphered certificate.

The invention provides an operation intercept based repentance method of a distributed critical task system, comprising the following steps of: firstly carrying out redundancy backup on important files of the system to ensure the recoverability of data information; secondly intercepting the operation information of the system by an operation intercepter in real time and writing into an operation log; and analyzing captured operation records by an operation analyzer and writing unrecoverable operation or operation which does not need to be recovered into redundant files by an operation storage and processing the operation which needs to be recovered by a repenter. When the system is faulty, the repenter carries out repentance recovery on the system through three continuous steps of operation rollback, operation restoration, operation resetting and solves the problem of inconsistency possibly generated in the repenting process through a consistency manager according to a graded compensation strategy.

The invention discloses a system and a method for short message retry based on parallel queues. The system comprises a retry processing module, a service processing module and a communication module; the retry processing module comprises a message distribution control unit, a plurality of retry channels, a shared retry configuration data unit, a centralized feedback dynamic flow control unit and a message export unit, wherein the message distribution control unit is used for receiving a message which needs retry, and distributing a retry message to the plurality of retry channels according toa distribution strategy; each retry channel forms a processing logical machine for integrally processing the retry message; the shared retry configuration data unit is used for configuring basic parameters of parallel retry processing; the centralized feedback dynamic flow control unit is used for controlling retry flow of a current target network element; and the message export unit sends the retry message to the communication module and then to the target network element. By adopting the flow of the current system to trigger the flow control, the system and the method remarkably improve theretry processing capacity of a short message gateway, effectively reduce the cost of the system, and realize efficient short message retry function.

The invention discloses a credit link automatic tracking platform and a method thereof. The platform comprises a client, a log access layer, a log center, a log processing layer and a log storage layer, wherein the log information comprises login user information, user operation log information (addition/deletion/modification/login), time information, a system log and a database Bin log; the wholeoperation action and operation range of the user are collected, the complete information is calculated and processed in a distributed environment through a calculation model, and the platform can completely describe the movement track of the whole user; in a link system, a user is used as a search unit, all information data used by the user on a platform are searched rapidly and efficiently through a search engine and indexes according to a certain time range, and then a credit link track of the user on the platform in the period can be completely described through a platform track fixed-point algorithm and a tool.

The invention discloses a data integrity verification method capable of safely removing duplication in cloud storage of a smart power grid. The method comprises the following steps: firstly, performing erasure code encoding on a file; calculating a mark of the erasure code encodingfile and uploading the fileto a cloud server; enabling the cloud server to adopt a file-level deduplication strategy to perform deduplication and storage on the file; for files without duplication, adopting a data block level deduplication strategy for deduplication in the storage process, enabling the cloud server to verify the file ownership of a user through a Bloom filter, enabling the user to verify the integrity of stored data through an S-PDP mechanism to restore damaged data through erasure codes. An erasure code mechanism, a two-leveldeduplication strategy, the Bloom filter and the S-PDP mechanism are combined together, redundant power data can be effectively eliminated, the storage space and bandwidth are saved, ownership certification can be supported, data restorability is ensured, user privacy is protected, and therefore the safety and integrity of cloud storage data of the smart power grid are ensured.

The invention discloses a data processing method and a data processing device based on a cloud storage system. The cloud storage system at least comprises a cloud recover and a plurality of cloud storages. The method comprises the steps of receiving a first deleting instruction of a user, wherein the first deleting instruction comprises first identification information of target data; determining a target cloud storage corresponding to the target data according to the first identification information; searching target data in the target cloud storage; modifying a target status bit of the target data in the target cloud storage into second status bit information from first status bit information, and adding data information in the target data to the cloud recover. According to the embodiment of the invention, through the mode of modifying the status bit of the target data, target data in the cloud storage which are seemingly deleted by a user can still be recovered through the cloud recover in the subsequent operation, so that recoverability of data is ensured, the applicability of the data is improved, and further the user experience is improved.

The embodiment of the invention discloses a data degradation storage method and device and belongs to the technical field of data storage. The method includes a step of obtaining data to be stored, detecting whether an online strip exists or not, and assigning an offline strip to the data if not, a step of reallocating data blocks and check blocks in online blocks of the offline strip if the number of the online blocks in the offline strip is larger than a sum of a preset number of check blocks in each strip and 1, wherein the number of the check blocks is the preset number of the check blocksin each strip, and a step of storing the data into the offline strip. In the prior art, a RAID in a degraded state only continues to distribute and store subsequently stored data and no longer calculates and stores verification data, and once a data block has reading and writing failures, all data stored in a disk are lost and unrecoverable, according to the method and the device, the above problem is solved, and an effect that the data stored by the RAID in the degraded state can be recovered is ensured.

The invention discloses a method for optimizing application-level multilayer check points based on a super computer, and belongs to the field of computer system structures and high-performance computing. The invention discloses an optimization method for application-level multilayer check points based on a super computer. The optimization method comprises the following steps: 1) replacing fault nodes; 2) determining a placement time sequence of each layer of check points; 3) performing group division on hardware nodes and processes running on the nodes; 4) determining the type of the fault occurring in the process group by adopting a fault type judgment algorithm; 5) for the fault type, adopting a corresponding recovery strategy in the process group; 6) when a corresponding time point in each layer of check point placement time sequence is reached, adopting a corresponding check point strategy to complete the storage of the intermediate state data; and (8) continuing to operate, if theoperation is not finished, returning to the step (6), otherwise, finishing the placement of the check points. The defect that the existing multi-layer check point optimization method depends on the hardware characteristics of the super computer, so that the super computer often does not have universality is overcome.

The invention discloses an invitation code promotion level query system based on a B tree and a forest. The method comprises the following specific steps: 1, constructing all natural users as root nodes of a tree B in a forest, 2, constructing child nodes of the tree B and completing tree construction, 3, storing the B tree and a forest data model, 4, monitoring changes of database users by a monitoring thread and dynamically updating the tree and the forest, 5, carrying out related query according to the constructed B tree and forest model, and 6, performing persistence of the tree B and theforest data model. Through the query system, the farm game users are ranked, so that the problem of low efficiency in a massive data environment in hierarchical query is effectively solved, meanwhile,a model based on a B tree and a forest is provided, and tree nodes are self-defined, so that the system not only meets the requirement of improving the efficiency of common hierarchical query, but also can realize more conditional queries.

The invention discloses an es cluster double-computer-room high-availability deployment method, belongs to the field of computer business application research and development, and solves the problem that cluster deployment in the prior art cannot ensure cluster data security, application availability and uninterrupted application service. Es clusters are installed and deployed in a main machine room A and a standby machine room B, after installation and deployment are completed, parameters are set that copies of the same fragment are distributed in the main machine room A and the standby machine room B respectively, and the fragment and the copies of the fragment are located in different areas; the Nginx cluster is installed and deployed in a primary machine room A and a standby machine room B, and routing configuration is carried out; and high-availability logic calling is realized based on the configured primary machine room A and standby machine room B. The invention is used for realizing the es cluster double-computer-room deployment.

The invention discloses a processing method and device for a database. The method comprises the steps of obtaining a first instruction used for recovering a database; obtaining first database entry identification information of a first page in a first storage medium according to the first instruction; according to the first database entry identification information, a first data storage structureused for managing the first storage medium is obtained, the first data storage structure comprises a second page, and the second page comprises second database entry identification information; and performing recovery processing on the database according to the first instruction and the first data storage structure. By adopting the method provided by the invention, the problem of low memory processing performance of the database in the nonvolatile memory in the prior art is solved.