59results 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 discloses a switch clock synchronization controller and a control method for a time-triggered network. The switch clock synchronization controller comprises a curing module used for restoring a PCF frame sending sequence, a compression module used for calculating an SM clock deviation average value, an optimal compression point selection module, a local clock module used for correcting a local clock and generating a new PCF frame, a cluster detection module used for detecting a network state and a state machine control module used for coordinating the work of the modules. The curing module imports a transparent clock for identifying the transmission delay and a maximum transmission delay for restoring the sending sequence and moments of the PCF frames for solving the problem of lagged clock synchronization; the compression module adopts a hardware mode to realize a three-level streamline dynamic compression algorithm for improving the calculation precision and efficiency of clock synchronization; and a compression point having the largest member number and closest to a receiving window end moment is used as the optimal compression point to ensure that all nodes in a synchronization state in the network can be detected.

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 security protection method and system for an information management system and a storage medium, and relates to the technical field of security protection.During operation of the system, when a user logs in or carries out sensitive operation, multiple identity verifications are carried out, an identity verification coefficient AC is obtained through calculation, various security parameters in the system are collected and updated in real time, and the security protection efficiency is improved. A high-strength encryption algorithm is applied to data to be transmitted, an encrypted data packet is generated, a transmission encryption coefficient EC is obtained through calculation, corresponding access permissions are set for different data based on user roles, identities and access content, an abnormal monitoring coefficient ADC is obtained, and a comprehensive safety coefficient SEC is obtained through calculation according to an identity verification coefficient AC, the transmission encryption coefficient EC and the abnormal monitoring coefficient ADC. The overall safety of the system is dynamically evaluated, abnormal behaviors are recognized and logs are recorded by comparing the comprehensive safety coefficient SEC with a preset threshold value, and when the system detects an abnormal access mode, a safety alarm is triggered and countermeasures are taken.

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 method includes following steps: after receiving request for changing cross connections, configuration controller calculates request so as to obtain new CLOS matrix; configuration controller issues new CLOS matrix to group of cross node; waiting for ready signal returned from all cross nodes in group of cross node; after ready for preparing switching, each cross node returns ready signal to configuration controller; after all ready signals are returned, configuration controller sends out synchronous switching signal to inform each cross node to carry out switching operation for the cross matrix; after receiving 'synchronous switching signal' from configuration controller, each synchronous node switches to new matrix instantly. Configuration controller is composed of communication circuit, control line and state line.

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 invention discloses a method for realizing two paths of voice communication based on a webpage. The method comprises the following steps: a streaming media server authenticates the rights of received audio information commands sent by two communication parties; and after the authentication is passed, the two communication parties upload audio streams to the streaming media server respectively and communicate with each other through two paths established through the two communication parties. The invention also discloses a system for realizing two paths of voice communication based on a webpage. By adopting the method and the system, two paths of safe voice communication can be realized without downloading any software.

The invention relates to the technical field of information security, provides a data transmission method and system based on visible light and a storage medium, and is used for solving the technical problem that high-security transmission of data between networks with different security levels cannot be realized in an absolute physical unidirectional isolation network environment in the prior art. The method comprises the following steps: performing encryption and forward error correction code processing on an access request received in a first security level network to obtain a forward error correction code corresponding to the access request; transmitting the forward error correction code to one end connected with the second security level network through one-way visible light, and restoring effective information in the access request from the forward error correction code; and initiating access to the second security level network according to the effective information.

The invention belongs to the technical field of power distribution network equipment, and particularly provides an intelligent power distribution cabinet and a monitoring method thereof.The intelligent power distribution cabinet comprises an intelligent power distribution cabinet body, a lifting mechanism, a damping mechanism, a fireproof mechanism, a base and a power module for supplying power to the whole intelligent power distribution cabinet; the intelligent power distribution cabinet body is installed on the base through the damping mechanism and the lifting mechanism in sequence, the monitoring module comprises a monitoring unit, an edge calculation processor, a storage unit and a communication unit, the monitoring unit and the storage unit are both connected to the edge calculation processor, and the edge calculation processor is connected to a cloud server through the communication unit; by introducing the edge computing processor, real-time data processing and analysis can be carried out locally on the intelligent power distribution cabinet. The localized computing power avoids delay caused by uploading a large amount of data to the cloud, especially under the condition of poor network conditions, quick response can still be kept, and the effectiveness of real-time monitoring and fault early warning functions of the power system is ensured.

The invention relates to a robust image watermarking method, system and terminal based on a conditional diffusion model, and relates to the field of robust image watermarking technology, and the method comprises the steps: carrying out the training step in a circulating manner according to the training step information, and the training step comprises the steps: obtaining the training original image information and the training watermark information; determining training condition noise image information according to the training original image information; the training condition noise image information, the training original image information and the training watermark information serve as input to control a training encoder to generate coded image information; taking the coded image information as input to control an attack layer to generate attack image information; the attack image information serves as input to control a training decoder to generate training decoding watermark information; and calculating loss function information according to the training original image information, the encoding image information, the training watermark information and the training decoding watermark information, and updating encoder parameter information and decoder parameter information according to a gradient descent method. The method has the effect of improving the watermark performance.

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.

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.

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 storageand 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 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 froma 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.

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 embodiment of the invention discloses a distributed data dynamic storage method based on a block chain and electronic equipment. A specific embodiment of the method comprises the steps of obtaining to-be-stored target data and target metadata; generating a target data block set based on the target data; storing the target data block set in a storage node group; determining a storage relationship set based on the target metadata and the target data block set; storing the storage relationship set in at least one metadata management node; updating the block chain. According to the method, a target data block set is generated after a target data block to be stored is segmented and copied. The multi-copy target data block set ensures the security and restorability of the distributed storagedata. And the target data block set is stored in the storage node group, and the storage node with the highest current comprehensive performance index is dynamically selected for storage according tothe comprehensive performance index of each storage node in the storage node group, so that the storage efficiency and performance are improved.

The embodiment of the invention discloses a breakpoint continuous migration method and device for heterogeneous database distributed migration and a medium, belongs to the technical field of heterogeneous database migration, and solves the problems that after heterogeneous database migration is abnormally terminated, the whole migration process is usually restarted, resources are calculated, and the total migration time is prolonged. Comprising the steps that a system service node carries out persistence on migration execution information, and a migration service node carries out persistence on execution task information; in response to abnormal interruption of the system service node and / or the migration service node, after the system service node and / or the migration service node are / is recovered, the system service node determines a completed execution task and an uncompleted execution task based on the persistent migration execution information; starting a breakpoint continuous migration process, and redistributing the determined uncompleted execution task to a migration service node by the system service node; and the migration service node checks whether an uncompleted execution task is completed or not based on the execution task information, and returns an execution result to the system service node.

The invention discloses an antibacterial-waterproof hydrogel biosensor based on a conductive spandex fiber net and a preparation method of the antibacterial-waterproof hydrogel biosensor. The preparation method comprises the following steps: (1) preparing graphene composite elastic spandex conductive fibers by adopting a solution dry spinning method, and weaving the graphene composite elastic spandex conductive fibers into a fiber net; (2) designing a cuboid-shaped mold, and fixing a fiber net on hooks on four edges in a mold groove to serve as a first layer of conductive fiber net structure; (3) preparing a sodium alginate / acrylamide mixed solution blended with nano-silver, and pouring the sodium alginate / acrylamide mixed solution into a mold for in-situ polymerization; 4) transferring the mold into a Ca < 2 + > coagulating bath to form a second layer of gel matrix structure with double networks; and 5) after the gel is completely dialyzed, dipping the gel in a stearic acid / organic silicon emulsion / vegetable oil mixed solution for hydrophobic modification so as to form a third waterproof layer structure on the surface of the gel, and finally obtaining the hydrogel biosensor. The biosensor has conductive, stretchable, antibacterial and waterproof functions and the like, and can be applied to biological strain monitoring.

The invention discloses a distributed cloud storage system based on an intelligent contract, which belongs to the technical field of information security. The method of the present invention includes six modules including initialization, generating blocks, signing, storing, deploying contracts and auditing. Compared with the existing cloud storage solution, the present invention can prevent single-point storage failure; can guarantee the confidentiality, availability and user control of outsourced data at a lower cost; can guarantee the anonymity of the identity of the data owner and lessor ; It can ensure that after the lessor stores the outsourced data according to the contract, the data owner cannot deny the storage service enjoyed, and it can also ensure that the mortgaged assets are automatically transferred to the lessor's account after each integrity audit.

The invention discloses an exception handling method and device, equipment and a medium. The exception handling method comprises the steps that a file system of a target partition is monitored; when it is monitored that the file system is abnormal, abnormal information corresponding to the target partition is recorded; in response to a starting operation of the vehicle-mounted terminal, when the abnormal information is recorded, formatting the target partition, so that a user terminal performs data recovery on the target partition after acquiring the formatted information; wherein the formatting information is information representing that the target partition is formatted. Thus, the file system of the target partition is monitored, the abnormal information can be recorded in time, and the formatting operation of the target partition is carried out after the vehicle-mounted terminal is restarted, so that the user terminal can carry out data recovery based on the formatting information, the file system can normally use the corresponding partition, the situation that the file system cannot be recovered after being abnormal is avoided, and the user experience is improved. And the reliability and the restorability of the file system are ensured.

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 relates to the field of truffle artificial cultivation, and discloses a truffle lagoon recovery and tree inoculation method. The method comprises the steps of selecting mature truffle, cleaning mature truffle and pulping the truffle into juice, adding purified water into the truffle juice, manufacturing the juice into a juice suitable for being sprayed, adopting a manual sprayer forspraying the truffle juice to a lagoon needing to be recovered and a region suitable for inoculation, performing timely earthing on the place obtained after the truffle juice is sprayed, insolation isavoided, the phenomenon that the concentration is diluted by rainwater is avoided, and the operation region is observed and detected periodically. The truffle lagoon obtained after picking is completed or cultivation fails can be recovered, growth picking and cultivation recovery of the truffle lagoon are ensured, meanwhile, the recovery means can be used for truffle cultivation and planting, andthe wide application is achieved in the field of artificial truffle cultivation and planting.

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.

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 privatekey 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.