99results about How to "Avoid data inconsistencies" patented technology

The invention discloses a cross-database distributed transaction implementation method. The method comprises the first step of receiving distributed transaction activation requests and distributing transaction identifiers to distributed transactions, the second step of receiving operation requests or an operation request collection of the distributed transactions which the transaction identifiers are distributed to for database operations, the third step of acquiring information of a target database of the database operations according to all the operation requests and sending the database operations to the target database for execution in accordance with the ACID principle, and the fourth step of clearing the distributed transactions after all the database operations are executed. The invention further provides a cross-database distributed transaction implementation device. By means of the method, the cross-database distributed transactions which are lightweight and easy to maintain and meet the ACID principle can be realized.

In a database apparatus (10), a critical database server (12) includes a primary server (20) supporting a primary database instance and a secondary server (22) supporting a secondary database instance that mirrors the primary database instance. The secondary server (22) generates an acknowledgment signal (60) indicating that a selected critical database transaction (42) is mirrored at the secondary database instance. A plurality of other servers (14, 16, 18) each support a database. A data replicator (30) communicates with the critical database server (12) and the other servers (14, 16, 18) to replicate the selected critical database transaction (42) on at least one of said plurality of other servers (14, 16, 18) responsive to the acknowledgment signal (60).

The invention provides a data processing method, an RNIC and equipment, and the method comprises the steps that a first RNIC receives an RDMA write request sent by a second RNIC, the RDMA write request comprises first data and a data persistence mark, and the data persistence mark is used for indicating that the first data is to-be-persisted data; according to the RDMA write request, the first RNIC sends the DMA write request to the first processor to instruct the first processor to write the first data into the first device, the first RNIC and the first processor belong to the first device, the second RNIC belongs to the second device, and the first RNIC and the second RNIC communicate with each other based on an RDMA mode; and according to the data persistence mark, the first RNIC determines that the first data is to-be-persisted data, and the first RNIC instructs the first processor to store the first data into a nonvolatile memory of the first device. Therefore, the load of the RDMA network in the remote memory persistence process is reduced.

The invention provides a processing method, device and system for ensuring the consistency of calculated data. The method comprises the steps of reading off-line data in an off-line database and determining delay time of off-line data synchronization delay according to storage statistic time of the off-line data; reading real-time data of current statistic time from a preset real-time flow calculation result database and reading real-time data corresponding to the delay time as compensation data of business calculation; conducting the business calculation on the basis of the off-line data, the real-time data and the compensation data. According to the processing method, device and system for ensuring the consistency of the calculated data, the problem can be solved that uncertainty and delay of data synchronization time result in data inconsistency, the calculation accuracy of recommendation ranking scores is ensured, the performance losses of the business calculation are reduced, and the calculation efficiency is improved.

The present invention discloses a third party registration processing method based on the IMS network, which comprises that a UE completes the registration on a S-CSCF entity; the S-CSCF entity starts a waiting timer; the UE and a P-CSCF entity initiate and complete a registration status subscribing respectively to the S-CSCF entity; the S-CSCF entity initiate a third party registration to an AS when the waiting time of the waiting timer is enough. Through the present invention, the S-CSCF entity performs a waiting after the UE is successfully registered, to make the subscribing success of the registration status of the P-CSCF and the UE take precedence over the third party registration and avoid the situation of conflicting data of the UE, the P-CSCF, the S-CSCF and an HSS, to make the UE, the P-CSCF and the S-CSCF effectively process the abnormal circumstance occurred when the third party registration fails.

The invention provides a data processing method, a terminal, a server and a storage medium. The method comprises the following steps: obtaining the source service data stored in the service data server; obtaining the source service data stored in the service data server; processing the source service data according to a preset service classification rule to obtain a cache file, wherein the cache file characterizes the data after the source data is classified and sorted; the cache file is distributed to at least one service server for use when the at least one service server responds to a service access request.

The invention discloses a multi-cluster data synchronization method of a distributed storage system and a related device, wherein the multiple clusters comprise a master cluster and slave clusters, each cluster comprises at least one server used for storing information, data of each server is stored based on a key value, the method is applied to the master cluster, the method comprises the following steps: receiving a data synchronization request sent by any slave cluster, wherein the data synchronization request comprises an index key; in response to the data synchronization request, acquiring total data of a value corresponding to the index key from a database of the master cluster; and sending the total data of the value corresponding to the index key to the slave clusters, so that theslave clusters realize full update of the value corresponding to the index key. Therefore, support is provided for guaranteeing the data consistency of multiple clusters.

The invention discloses a method and a device both for avoiding IO conflict in a cloning system. The method comprises the following steps: logically dividing two cloning rolls into a plurality of data blocks with the same size according to a copying basic unit set by a user; when any one of the two cloning rolls receives an IO request, aligning content corresponding to the IO request to each data block in a range from the data blocks of starting positions of the cloning rolls to the data blocks of stopping positions of the cloning rolls according to the starting positions and stopping positions read and written by the IO request; and locking each data block corresponding to the IO request and rejecting other operation except the IO request. By the aid of the method and the device, the data consistency in a cloning process can be avoided.

The invention provides a method for solving functional operation conflict inside management software by configuring a conflict matrix. The method can avoid the conditions such as data inconformity, different calculation results and the like caused by mutual interference between functions or operations due to the conflict by assisting an operator in effectively solving the conflict produced between different functions or different operations with the same function in the management software due to service reasons through the conflict matrix so that the management software has strict services and accurate data.

The invention discloses a method for efficiently managing caches based on data versions, and belongs to the technical field of software development. The method for efficiently managing the caches based on the data versions makes up insufficiency of MyBatis second-level cache control, synchronization and consistency of second-level caches and database data are improved, and correlations between each cache are processed; the second-level cashes of MyBatis are accurately managed, and fine granularity of the MyBatis second-level caches is controlled; when updating operation is executed on a database table, caches generated by a query statement which is represented by a specific StatementId can be specifically cleared. According to the method for efficiently managing the caches based on the data versions, the problem is solved that database pressure is caused by a large amount of interaction between a system and a database in an existing software development process, the requirement of consistency of business data is met, at the same time, the difficulty of code development is reduced, and the performance and concurrent capability of existing or newly-established systems are improved.

The invention provides an electronic invoice generating method, device and system. In the generating process of electronic invoices, the process of verifying the electronic invoices through a tax-control invoice making server of the tax authority is involved, and namely tax bureau electronic signatures are generated for transaction data, so that it is ensured that the electronic invoices obtain authentication of invoice making enterprises and the tax authority, and the problem that electronic invoice data of the enterprises and the tax authority are inconsistent is effectively avoided.

The invention provides an information reporting method, an information reporting apparatus and a data node server, and is used for reducing the time-delay for meta-data information synchronization between a data node server and a meta-data server, and reducing the burden which is brought by reporting of large amount of meta-data information to the meta-data server. The method comprises determining the meta-data information, of a data block, to be reported to the meta-data server when there is requirement for reporting the meta-data information of the data block to the meta-data server, wherein if it is the first time for a data node server to report the meta-data information of the data block, the reported meta-data information of the data block includes the meta-data information of all the data blocks in the data node server, and if it is not the first time for the data node server to report the meta-data information of the data block, the reported meta-data information of the data block is the meta-data information of part of the data blocks in the data node server; and reporting the reported meta-data information of the data blocks to the meta-data server by the data node server.

The invention discloses a distributed high-fault-tolerance data real-time synchronization method from MongoDB to HBase. The method comprises the steps that an oplog operation log recording function of the MongoDB is started; a producer reads out records after the check points of the oplogs in the MongoDB, pushes each oplog to a predetermined theme of Kafka, and writes the oplogs into Redis at the same time; after the oplog enters the Storm, the operation type of the oplog is judged, and for the operation type related to data synchronization, a key suitable for HBase storage is obtained; the value and the data positioning information are obtained, or only the data positioning information is obtained; and the HBase writer receives the transmitted key-value and data positioning information and carries out corresponding processing. According to the method, real-time data synchronization from MongoDB to HBase is efficiently carried out, the accuracy of data synchronization is ensured, and the complex data real-time synchronization requirement of a service system can be met.

The invention discloses a metadata management system serving enterprise innovation management, and relates to the field of computer informatization management application. The metadata management system comprises an enterprise basic information module, a personnel information module, a research and development institution module, a research and development project module, a research and development expense module, an intellectual property module, a scientific and technological achievement module, a high and new technology product module and a capital and production operation information module. The metadata management system serving enterprise innovation management is used for managing innovation elements of an enterprise, sorting enterprise science and technology resources and helping theenterprise to accelerate innovation systematic construction.

The invention provides a fabricated building quality management system and a management method. The problem of difficulty in uniform management as a result of different building member fabricating manufacturers and node fabricating construction units is solved by a way of branched management of member electronic labels and node electronic labels by carrying out digitalized uniform management on building member fabrication and node fabrication with a management center server and storing the member fabricating information and the node pouring information of a building permanently by means of themember electronic labels and the node electronic labels. The system can inquire the building member information or the node pouring information quickly in the links such as prefabrication, fabrication, supervision, maintenance and problem responsibility tracing, so that the problem of inconsistent data and cross-check in the member prefabricating and node fabricating processes can be avoided, thequality management efficiency of the fabricated building can be improved effectively, and safety accidents are reduced.

The invention relates to the field of computer application technology, and particularly to a system of multi-table cross-database joint-querying and a realization method thereof. The system comprisesa compiler, an SQL dialect optimizer, a data cache, a querier and a result set. Statements of querying tables of different databases are separated out through the compiler to form independent databasedialects, an SQL is optimized by the optimizer to improve execution efficiency thereof, finally, SQL statements are executed to respectively query the tables of the different databases, obtained query results are stored in the data cache, and finally, the query statements are executed by the querier to obtain the desired result set. Difference of the databases is masked in a whole process of thesystem, and the whole process is transparent for upper-layer operations. The system can be used in multi-table cross-database joint-data-querying of the databases.

The invention provides a data processing method and device and a storage medium. The data processing method comprises the steps that a data processing device obtains data corresponding to a data request from a physical library and a cache library based on the data request sent by a client, and compares the corresponding data in the physical library with the corresponding data in the cache librarythrough a data comparison algorithm to obtain difference data blocks in the physical library and the cache library. And according to the difference type of the difference data block, carrying out datarestoration on the difference data block in the cache library, so that the data of the physical library and the cache library are kept consistent. According to the method, the difference data can bequickly compared and subjected to data restoration, the problem that the data of a physical library and the data of a cache library are inconsistent is avoided, and therefore the processing performance of the application server is improved.

The invention provides a method for data access. The method is used for realizing data synchronization between a mobile terminal and a server. The method comprises the following steps: the mobile terminal utilizes hashing operation to catch the change of data, and based on the change of the data, the mobile terminal starts a data synchronization process. According to the method disclosed by the invention, computed hashing data are used as a core, so that the method disclosed by the invention has high feasibility and high efficiency. In the process of data synchronization, under the condition that mobile terminal users participate in the data synchronization, the problem that data at the mobile terminal are inconsistent with that at the server is effectively solved.