104results about How to "Consistent data" patented technology

A method and apparatus for assuring data consistency during certain operations involving dependent input / output sequences. During such operations a stall application blocks write operations to specified logical devices in a local consistency group while allowing read operations to all devices and write operations to non-specified logical devices. When a write command is directed to a logical device in local consistency group, the host adapter associated with the logical device returns a message to the host that initiates a write command retry. Retries generally continue until a write command is successful.

The invention provides a method for keeping consistency of copies in a distributed system, comprising the steps of: recording states of indexes and copies by a metadata server in a storage system; only modifying a master copy by a client, and synchronizing slave copies by the master copy; and in the synchronization process, recording memory logs in the copies, and recording the logs into discs or discarding according to operation results. According to the method for keeping consistency of copies in a distributed system, the consistency of data can be ensured when the copies are minimally available; a fault of data inconsistency caused by invalidation of networks, servers, discs and the like can be solved; and the copies can be resumed rapidly with a minimal cost.

The invention discloses a database switching method and system and a computer readable storage medium. The database switching method comprises the following steps: acquiring a state of a master database from a resource manager corresponding to a master database in a node of a distributed database; and obtaining a state of the master database from a resource manager corresponding to the master database; when the normal state of the master database cannot be obtained, obtaining the log information of the master database; according to the log information of the master database, supplying data toone or more of the nodes from the slave database; selecting one from one or more slave databases as a new master database and treating the master database as a new slave database; sending requests updating the master-slave relationship to all resource managers in the node According to the invention, the state of each node of the distributed database is detected to be abnormal in time, and after the slave database is synchronized according to the log information of the master database, the slave database is selected as a new master database to ensure the consistency of the data of the originalmaster database and the new master database, so the normal master-slave relationship in the distributed database is maintained.

The invention relates to the technical field of embedded systems and provides a method for controlling the data consistency in a communication based train control (CBTC) system. By the method, safety management of data is realized; and all vehicle on board controllers (VOBC), zone controllers (ZC) and other sub systems can acquire new data from a database storage unit (DSU) immediately during running of the whole CBTC system, and the mutually used data are consistent totally. In the method, by adoption of a management strategy based on a database version number, the version number can be associated with a data content, and the probability of error identification can be reduced; meanwhile, the quantity of data interacted among different sub systems is reduced to the maximum extent; therefore, the efficiency and the safety are improved.

The invention provides a block chain and Internet of Things identifier combined heterogeneous identifier analysis method, which comprises the following steps: a current identifier root node generatinga mapping information record corresponding to an identifier code, submitting the identifier code and the mapping information record to a block chain and broadcasts the identifier code and the mappinginformation record, and the mapping information record comprising an analysis server address corresponding to the identifier code; receiving an event which is broadcasted after the mapping information record is verified and stored by the block chain module; and receiving a query request containing the identification code sent by the client, and querying a mapping information record in a block chain module to obtain an analysis server address of other identification root nodes corresponding to the identification code. The method is aimed at Internet of Things identifier analysis service. The block chain technology is used for solving the problem of synchronization consistency of neglected mapping tables in the identification analysis service from a single root to a plurality of distributedarchitecture related technologies, complete fair peer-to-peer between the analysis services is realized, and the whole peer-to-peer network is ensured to realize compatible heterogeneous Internet ofThings identification analysis service.

The invention discloses a numerical control machine tool motion control card based on WIFI communication. The motion control card uses an ARM chip as a main controller and uses an FPGA chip as a hardware architectural structure of a coprocessor. A peripheral circuit of the ARM chip includes a reset circuit, a real-time clock circuit, an SDRAM, a FLASH storage module and various communication interfaces, needs to complete a communication task with a host computer, calculates motion codes and instructions transmitted by the host computer and finally process and form interpolation data and IO logic data to transmit to an FPGA for execution. According to the numerical control machine tool motion control card based on the WIFI communication, the advantages of a novel numerical control system mode are compared with that of a traditional numerical control system mode, the feasibility of using a WIFI wireless communication mode is analyzed from the perspective of real-time control and safety reliability, the wireless communication data frame format design and detailed semantic definition are achieved, and the data verification is based on reliable hardware CRC in order to improve the real-time communication.

An intelligent network frame device consists of remote server and client end including interactive layer for receiving operation request of display operation unit then sending it to core processing unit and for receiving data operation request of core processing unit then sending data operation result to display operation unit according to data operation request , and core processing unit for carrying out relevant data operation according to operation request sent by interactive layer and for ensuring synchronous refreshment of local data and remote server .

The invention discloses method and system for embedding a browser in a three-dimensional client end. The method comprises the steps of: A, when a user operates the three-dimensional client end for interaction, triggering and opening an embedded browser; B, loading an appointed page of a URL (Uniform Resource Locator) by the browser; C, registering a dependent event callback function to the 3D client end by using a JaVaScript program of the browser; D, calling various functions of the 3D client end by using the script program; and E, sending an event to the browser by the 3D client end and copying a browser rendering result to a 3D texture and displaying. The system comprises an embedded browser, a browser interface module, a graphical user interface module / texture resource management module and a graphical drawing module / texture output module. By adopting the invention, a 2D web application can be effectively enabled to be seamlessly embedded into the client end of 3D virtual reality for enriching the application range of a 3D virtual world and reducing the cost of developing the 3D virtual reality application.

The invention relates to a sucking rod mechanism capable of sucking acoustic gauze of a mobile phone. An R-axis moving shaft is arranged on an R-axis extension shaft; the R-axis extension shaft is connected with a slider through a slide track; the slider is provided with a cylinder fixing plate; the cylinder fixing plate is provided with a cylinder; a pressure sensor fixing seat is arranged at the lower end of the cylinder fixing plate; a pressure sensor is arranged on the upper portion of the pressure sensor fixing seat and is connected with the R-axis extension shaft through a spring; a gauze suction nozzle connecting sleeve is arranged on the lower portion of the pressure sensor fixing seat; a main suction nozzle and an auxiliary suction nozzle are arranged at the lower end of the gauze suction nozzle connecting sleeve; the lower end of the cylinder is connected with a lever floating joint; a rotating shaft is arranged on the gauze suction nozzle connecting sleeve; the lower end of the lever floating joint is connected with a gauze clamping jaw; and the middle of the gauze clamping jaw is connected to the rotating shaft. A manipulator drives the gauze clamping jaw to clamp release paper with the acoustic gauze, the acoustic gauze is sucked by the gauze suction nozzle and is pressed on a shell of the mobile phone, and pressure is measured through the pressure sensor.

The invention discloses a method and a device for realizing PON system service recovery, which can rapidly recover the services of all ONUs (Optical Network Units) which are in a normal state previously. The main technical scheme comprises the following steps that: 1. when a downlink signal from an OLT (Optical Line Terminal) to the ONUs is normal, the OLT immediately sends a state transfer message, and all the ONUs which are originally distributed with ONU IDs immediately transfer to an O4 or O5 state after receiving the message; 2. the OLT continuously measures the distances of all the ONUs which are in the normal state before service cut-off and transfer to the O4 or O5 state after receiving the message; and 3. service recovery is carried out on all ONUs which successfully update EqDl; and for ONUs which do no start the T-CONTs (Transmission Containers), the T-CONTs need to be started firstly. By adopting the technical scheme, the PON system service recovery time can reach a millisecond level.

The invention discloses uniform internal and external memory architecture based on an MMU (memory management unit). The uniform internal and external memory architecture comprises a processor which is communicated with the MMU. The MMU is communicated with external equipment. The MMU comprises a management module and a memory control module. The external equipment comprises a DDR3SDRAM and a PCM. The management module comprises an internal memory mapping module, an internal memory protecting module and a dynamic data management module. The internal memory mapping module comprises an address mapping module and a mapping table which are communicated. The internal memory protecting module and the dynamic data management module receive data transmitted by the address mapping module. The uniform internal and external memory architecture has the advantages that various types of memories are used as mixed memories under the uniform internal and external memory architecture and used for storing data and executing programs, and a storage function good in performance and low in energy consumption is provided for a system by using the characteristics of different memories.

Embodiments of the invention disclose a method, a device, and an apparatus for data update, and a medium, and the invention relates to the field of an associated database management system. The methodincludes: sending a to-be-updated transaction to at least one slave library; controlling a local database to update the to-be-updated transaction, and synchronously issuing an update instruction to the at least one slave library, wherein the update instruction is used to indicate the at least one slave library to synchronously update the received to-be-updated transaction. The method, the device,and the apparatus for data update, and the medium realize synchronous update of data of the slave library and a primary library.

A buying and selling system of foreign currency comprises offer processing subsystem for generating foreign currency transaction information and for recording said information in databank, transaction subsystem for receiving transaction request from user terminal and for executing relevant transaction, transaction make-up subsystem for making various entrusted transactions be realized to be transactions, querying subsystem for receiving various query requests from user terminal and for returning queried result back to user terminal, management terminal for receiving data of external terminal and for sending receiving data to offer processing subsystem.

The invention provides an asynchronous service processing method and a server. The method comprises the following steps: obtaining a service request needing to request result data from a service provider again according to processing detail information of recorded service requests to serve as a target service request; in view of the target service request, sending a polling request of the service provider again to request to obtain the result data of the target service request; and receiving and recording the result data of the target service request returned by the service provider. By adoption of the asynchronous service processing method and the server provided by the invention, the consistency of the result data in the service provider and the data recorded in the service requester is guaranteed, the user is guaranteed to obtain the request result data accurately in time, and no manpower participation in the process, thereby reducing the labor cost and improving the processing efficiency.

The invention discloses a dual-machine hot standby method and system for a rail transit multimedia system, and the method comprises the steps: configuring a first server and a second server, and assigning one server as a host and the other server as a standby; and the host and the standby machine receive data from an external network segment at the same time, so that the data of the host and the data of the standby machine are kept consistent. According to the method, data are received from an external network segment through a host and a standby at the same time. The data of the host machineand the data of the standby machine are kept consistent. The problem that the data synchronization workload in the dual-machine hot standby system of the rail transit multimedia system is large is solved, the host can rapidly switch services when faults occur, the overall stability of the dual-machine hot standby system of the rail transit multimedia system is improved, and the fault switching time is greatly shortened.

The invention discloses a data processing method. The data processing method comprises the following steps: first storage equipment receives a first reservation preemptive command sent by a host through a target port, wherein the first reservation preemptive command includes a port identifier of the target port, a reservation key to be checked and a LUN; a forwarding port corresponding to the target port is determined according to a pre-set port mapping relationship; the reservation key to be checked, the LUN, the port identifier of the target port and a port identifier of the forwarding port are encapsulated, so that a second reservation preemptive command is obtained; the second reservation preemptive command is sent to second storage equipment through the forwarding port; and the second storage equipment executes reservation preemptive operation according to the port identifier of the target port. The invention further provides related storage equipment for realizing the data processing method. By means of the data processing method and the related storage equipment disclosed by the invention, in a process in which different storage arrays implement online data migration, when a host cluster is subjected to split-brain, the data consistency among the different storage arrays is ensured; furthermore, the process is independent of a fibre channel switch; and thus, the application scene is relatively wide.

An embodiment of the invention provides an implementation method of a cloud calendar. The implementation method comprises the steps of: receiving calendar reminding events through application sides deployed on different terminal equipment; and storing the received calendar reminding events in a cloud storage region through a cloud server side, wherein each calendar reminding event only corresponds to a user identifier, and each application side acquires and displays all the calendar reminding events of a specific user from a cloud storage side when being started as well as submits the received calendar reminding events to the cloud server side in real time. According to the implementation method of cloud calendar provided by the invention, all the calendar reminding events are stored in the cloud storage zone, thus data consistency of the terminals can be ensured without synchronization. The embodiment of the invention further provides a cloud calendar system.

The invention relates to a trading method, a client side and a server side of assembled customized commodities. The method applied to the client side includes following steps: obtaining commodity catalogue information, and selecting needed commodities from the commodity catalogue information; obtaining module components of the commodities, selectively assembling the module components according to function and appearance demands, and obtaining the assembled commodities; and sending an order of the assembled commodities to the server side and receiving confirmation information of the server side. The trading method, the client side and the server side of the assembled customized commodities have the advantages that a system user not only can select the commodities, but also can select the module components of the commodities so as to assemble the commodities according to own hobbies and needs, achieve customization, achieve production as needed for a manufacturer, and can buy the suitable commodities while avoiding resource waste to the utmost.

By way of summary, the present invention meets some or all of the above needs by providing in a first aspect a method comprising contacting red blood cells in a suspension medium containing mannose under conditions such that the concentration of S-Alc glycated hemoglobin is increased to greater than about 6 percent by weight of the hemoglobin in the red blood cells. Preferably the suspension medium is an aqueous suspension medium. In preferred embodiments, the method is performed at about ambient temperature, 18° C. to about 23° C.

The invention relates to a method and system for responding a request from a request side. The method comprises the steps that a timeout point and an entry point corresponding to the timeout point are set in a response program according to service characteristics; the request sent by the request side and the preset time are received; the request is responded, the current time of the timeout point and the current time of the entry point corresponding to the timeout point are captured separately, and a difference is calculated and serves as the program execution time of a current executed program; a difference between the preset time and the current accumulated total program execution time is calculated at the timeout point to serve as the current remaining time; and whether the current remaining time is larger than zero or not is judged, if yes, responding continues until a response result corresponding to the request is obtained, and the response result is sent to the request side, and if not, a failure instruction is executed. According to the method and system, the response cycle is shortened, data of the request side and data of a server side keep consistent, and the user experience is improved.

The invention discloses a sales locking method and system based on caching, and the method comprises the following steps: S1, dividing commodity information into a plurality of parts according to themodulus of a commodity code, and respectively storing the commodity information in a cache library of a corresponding code of Redis according to a preset rule; S2, obtaining and analyzing a sales locking request of the commodity to obtain a request list; S3, recording an inventory change intermediate table in the same transaction according to the request list, and then updating the commodity information in the cache library of the corresponding code of the Redis; and S4, asynchronously updating the commodity information in the database by using the second-level JOB according to the inventory change intermediate table. According to the method, the use of a single Redis cache library for storing a large amount of data is avoided; query efficiency is improved, atomicity of LUA scripts is usedfor replacing database affairs to guarantee data consistency, inventory concurrency control is conducted by means of the characteristics of Redis single threads, and the gray scale state is used forsolving the problem that cache and database data are inconsistent due to data processing when requests come in the process of switching the data to the cache.

The invention discloses a method and a system for managing charging. The method comprises the steps of: obtaining a first charging code of the user charging by a prepaying service control center; comparing the first charging code with a second charging code which is preserved beforehand when a user charges successfully last time; sending a charging request to a charging center under the condition that the first charging code is not consistent with the second charging code; carrying user information and the second charging code of the user in the charging request; receiving the charging request by the charging center; determining whether a second charging card corresponding to the second charging code is emplaced or not; feeding back confirming information to the prepaying service control center under the condition that the charging center determines that the second charging card is emplaced; and charging for the user according to the confirming information by the prepaying service control center. The invention also provides a prepaying service control device and a charging device. Through the method and the system, the consistency between data of the prepaying service control center and the data of the charging center can be guaranteed under the condition that abnormality occurs.

The invention discloses a method and a device for initializing a terminal. The method for initializing the terminal comprises that: the identifier variable of a subscriber identity module (SIM) is obtained; a numerical comparison is conducted on the identifier variable and the comparison variable in the terminal; when the comparison results turn out to be different, the data corresponding to the initial data of the subscriber identity module in the terminal are synchronized with the initial data of the subscriber identity module. Meanwhile, the embodiment of the invention also provides a device for initializing a terminal which comprises a comparison module used for obtaining the identifier variable of the subscriber identity module, comparing the identifier variable with the comparison variable in the terminal and sending the comparison results to a synchronization module and the synchronization module used for synchronizing the data in the terminal with the initial data of the subscriber identity module when the comparison results in the comparison module turn out to be different, thereby effectively ensuring that the data in the terminal are consistent with the initial data of the subscriber identity module.

The invention discloses a redundant network system for a train door. The system comprises a slave control unit group (composed of a plurality of slave control units) and a first master control unit, and a first CAN communication module and a second CAN communication module in each slave control unit in the slave control unit group are sequentially connected through a first CAN bus and a second CANbus respectively to form a first CAN subnet and a second CAN subnet. The first CAN communication module and the second CAN communication module in the first master control unit are respectively connected with the first CAN communication module and the second CAN communication module in the slave control unit at the first end of the slave control unit group. The first master control unit collectsthe vehicle door information stored in all the slave control units and transmits the vehicle door information to the train control and management system, and the first master control unit further receives the TCMS data information sent by the train control and management system and forwards the TCMS data information to all the slave control units through the first CAN subnet or the second CAN subnet. According to the system, the problem that the network does not have a redundancy function can be solved, the safety and reliability of the train network are improved, and the manufacturing cost ofvehicles can be reduced.

Data is processed using a first and second processing circuit (12) coupled to a background memory (10) via a first and second cache circuit (14, 14′) respectively. Each cache circuit (14, 14′) stores cache lines, state information defining states of the stored cache lines, and flag information for respective addressable locations within at least one stored cache line. The cache control circuit of the first cache circuit (14) is configured to selectively set the flag information for part of the addressable locations within the at least one stored cache line to a valid state when the first processing circuit (12) writes data to said part of the locations, without prior loading of the at least one stored cache line from the background memory (10). Data is copied from the at least one cache line into the second cache circuit (14′) from the first cache circuit (14) in combination with the flag information for the locations within the at least one cache line. A cache miss signal is generated both in response to access commands addressing locations in cache lines that are not stored in the cache memory and in response to a read command addressing a location within the at least one cache line that is stored in the memory (140), when the flag information is not set.

The invention discloses a high concurrent news information processing system comprising: a terminal module, an application module, a service module and a database module. The IOS and Android client development in the terminal module adopts a native framework development mode; load balancing and high availability technology in the application module select a linux virtual server and keepalived; a Memcached distributed memory cache server is used in the database module, data are synchronized in a master-slave (Master-Slave) replication maner, and the high concurrent load capacity of the databaseis improved by read and write separation (MySQL-Proxy). The high concurrent news information processing system provided by the invention redesigns the database structure through performance optimization and security management techniques such as master-slave access, data archiving, data backup and the like, thus enhancing the client application and the compatibility with the system, and ensuringthe data and network security.

The invention provides the method of realizing the data resource synchronization in the distributing system, the said method includes: the synchronous apparatus stores the data resource needing the synchronization in the temporary storage; when the store room needing the temporary storage reaches to the saturation or the fixing time reaches to the random condition, the synchronous apparatus makes the data resource of the temporary storage synchronization to the target apparatus. The invention also provides the apparatus of realizing the synchronization of the data resource.

The invention discloses a method, system and device for creating a snapshot of a storage active-active volume and a storage medium, and the method comprises the following steps: responding to a storage triggering snapshot, and writing data in a cache into two storages containing the active-active volume at the same time; recording data received by the double active volumes, and judging whether twostored and sent confirmation characters are received or not; creating a snapshot data pointer table based on the recorded data in response to receiving the acknowledgement characters sent by the twostorages; and synchronizing the snapshot data pointer table to the two stores to form a snapshot volume. According to the method, the system, the device medium for creating the snapshot of the storagedual-active volume, and the medium, the snapshot data pointer table is synchronized to the two storages to form the snapshot volume, so that the snapshot of the dual-active volume can be simultaneously created on the two storages of the dual-active volume, and the data consistency is kept.

The invention discloses a message comparison method and device, and relates to the technical field of computers. A specific embodiment of the method comprises the steps of backing up a database and alog of a production environment, sending data in the database to a quasi-production environment tested application, and analyzing the log to generate a request message and a response message; configuring a log conversion message rule; converting the request message into a request message of a quasi-production environment tested application and converting the response message into a response message consistent with a response message format of the quasi-production environment tested application through a BTS engine based on a log conversion message rule; sending the request message of the quasi-production environment tested application to the quasi-production environment tested application, and receiving a response message from the quasi-production environment tested application; and comparing the response message from the to-be-tested application in the quasi-production environment with the response message based on log conversion, and outputting a comparison result.