35results about How to "Ensure eventual consistency" patented technology

The invention provides a method and a device and a system for supporting the ultimate consistency of a micro-service architecture transaction. The method for supporting the ultimate consistency of the micro-service architecture transaction used for a transmitting end comprises the steps that a service call is initiated, the logs are recorded, when the logs are written with actions, uninitiated service calls or logs with not returned results when the specified time is exceeded are checked regularly, and call requests are sent; the returned receipt information is received, the log records are queried, the call treatments are judged whether or not they have been completed according to the log status, if the calls are being treated, the returned results are called, and corresponding transaction interfaces are called according to the returned results, service calls are continually initiated, then through the method for supporting the ultimate consistency of the micro-service architecture transaction used for the message queueing services and the payments of a receiving end, asynchronous data calls for services are achieved through the logs and the message queueing, and the ultimate consistency of inter-service data is finally achieved.

The invention provides a cloud storage data synchronizing framework based on analyzing the shortcoming of a single point failure of central server nodes Namenode, which exists in a hadoop distributed file system (HDFS) module in the current Hadoop framework. The cloud storage data synchronizing framework adopts a double-center-server architecture, and double center servers serve on line simultaneously, so that data consistency is realized; and a three-machine Paxos algorithm aiming at the double center servers and based on a distribution consistency Paxos algorithm is designed, so that a data synchronizing framework Quorum is formed, and read-write operation on the architecture is standardized. By the data synchronizing framework Quorum, the problem of service interruption under the condition of the signal point failure of the nodes Namenode is well solved, so that a system can provide correct data read-write access outward under the condition that a certain server fails, and final consistency of data can be ensured.

The embodiment of the invention discloses a data interaction processing method, apparatus and system. The method includes the steps of a sending terminal sending a request message including business data and preset overtime processing time to a message middleware, the message middleware sending the request message to a receiving terminal, the receiving terminal determining whether the preset overtime processing time in the request message is late than the current time, if yes, the receiving terminal conducting corresponding business processing for the business data in the request message, the receiving terminal sending feedback message of the business processing result to the message middleware, the message middleware sending the feedback message to the sending terminal, and the sending terminal conducting corresponding business advancing processing based on the feedback message of the business data. The technical scheme provided in the embodiment can not only effectively ensure the final consistency of communication objects on business data interaction processing results, reduces the coupling degree between communication objects, and solves the problem of excessively large flow of business requests.

The invention relates to a transaction processing method, device and system of a distributed system, a medium and equipment, and the method comprises: intercepting a service call request initiated bya service caller application, wherein the service call request comprises a service requested to be called; if the preset consistency identifier exists in the service calling request, constructing an event object according to the method metadata of the service requested to be called, and storing the event object in a published event list, wherein the initial state of the event object is non-published; and selecting a target object from event objects which are not published in the published event list, and sending a request message corresponding to the target object to message middleware, the request message including method metadata of a target service corresponding to the target object, so that a service provider application providing the target service provides the target service based onthe request message. Therefore, the final consistency of transaction processing of the distributed system can be ensured.

The invention discloses a resource recovery method for a resource management platform, and the method comprises the steps: obtaining the resource information of each development environment of the resource management platform, building a resource dependence relation graph based on the resource information, defining nodes in the dependence relation graph based on the metadata information of a plurality of assemblies of the development environment, and building a dependence relation based on the nodes; in response to the received task of recycling the resources, searching for affiliated resources of the to-be-recycled resources based on the dependency graph; and recovering the to-be-recovered resources and the affiliated resources of the to-be-recovered resources, and updating the dependencygraph. The invention further discloses a resource recovery device for the resource management platform, computer equipment and a readable storage medium. According to the method, the dependency graphof multiple resources in the platform is dynamically constructed in real time to ensure that the resources actively deleted by the user or invalid resources can be correctly recycled, so that the final consistency of the platform resources is ensured, the stability of the AI resource management platform is improved, and the data accuracy of the platform resources is ensured.

The invention relates to a data synchronization method, device and equipment and a computer readable medium. The method comprises the steps that a target transaction log of a first data storage end ismonitored, the first data storage end is used for storing data generated by operation of a business system, and the target transaction log is used for recording data updating information generated bythe first data storage end; when it is detected that the target transaction log is updated, target update data in the target transaction log is extracted; and the target update data is written into the second data storage end according to a preset configuration strategy so as to synchronize the target update data to the second data storage end. According to the invention, which data is updated and updated can be determined through the binary log file of the source data storage end, so that the target data storage end can directly perform data synchronization without the indication of a service function module, and the data synchronization and the service function are completely decoupled; maintenance and iteration of the two systems are facilitated, and stability is not influenced by eachother.

The invention discloses an evidence fixed verification method after multi-party consensus signature. The method comprises the steps of data encryption and hash calculation, multi-party signature evidence fixed platform processing and node consensus. The method comprises the following steps: firstly, processing a plurality of groups of original data encryption algorithms and then calculating hash;sending hash obtained through calculation to a multi-party signature evidence fixing platform, determining a consensus algorithm, determining a block chain network and determining a block chain in sequence, enabling the corresponding block chain to send the Hash to a notarization office node, a arbitration commission node, a court node and other institution nodes; allowing the notarization officenode, the arbitration Commission node, the court node and the other institution nodes to carry out identity confirmation, hash verification, consensus processing, signature processing and chaining fixing on hash in sequence. According to the evidence fixed verification method after multi-party consensus signature, intervention of a third party is guaranteed, the trust degree in the block chain isalso increased, and the method has the advantages of being high in trust degree and safety.

The invention discloses a coordination method and device for data consistency under distributed transactions in a cloud environment and a medium. The method comprises the following steps of splittingthe local transaction request into a plurality of operation requests, calling individual target databases, controlling the target database to enter a temporary state under the condition that the calling is successful or keeping the original state under the condition that the calling is failed; and receiving state return information from the target databases, respectively sending a service operation instruction to each target database when the state return information sent by each target database is used for representing the temporary state, and otherwise, carrying out rollback so as to enableeach target database to generate consistent response result data for the local transaction request. The device comprises a local transaction splitting module, a target data calling module, a return information receiving module and a data consistency control module. According to the method, it can be guaranteed that completely different databases provide consistent response results under the micro-service architecture, and particularly, final consistency of data is guaranteed under the abnormal condition.

The invention discloses a multi-chain message table transaction processing method for cross-chain and a cross-chain system.The method comprises the steps that a relay chain transaction contract is responsible for splitting a total transaction Tr into sub-transactions Tri, the state si of each sub-transaction is initialized, the relay chain transaction contract maintains a transaction table (a multi-chain message table), and the multi-chain message table is stored in the transaction table; when the application chain sub-transactions Tri are executed successfully, all gateways G can query the transaction state of the transaction table, rollback on the service is carried out in a timeout manner once the query fails, after the sub-transactions Tri of all the application chains are executed successfully, the sub-transaction states si on the corresponding relay chains are updated through the gateways, when all the sub-transactions are executed successfully finally, the total transaction succeeds, and as long as one sub-transaction fails, the total transaction fails. According to the multi-chain message table transaction processing method and the cross-chain system, the final consistency of cross-chain transactions is ensured through the built-in cross-chain transaction management contract.

Embodiments of the present application provide a distributed transaction processing method and device, and a storage medium, the method comprising: receiving a distributed transaction processing request, the distributed transaction processing request comprising at least one of a local processing operation and a processing operation of other microservices, and according to the association relationship of the plurality of processing operations, sequentially executing the plurality of processing operations to obtain an execution result, and returning the execution result to the client. The finalconsistency of global data is ensured by sequentially executing a plurality of processing operations, and in addition, a plurality of distributed transaction processing requests can be concurrently processed through a preset multi-thread, so that the overall throughput of the system is improved.

The invention discloses an equipment shadow, and an engineering machinery equipment remote scheduling management method, device and system wherein the engineering machinery equipment remote scheduling management method is applied to the equipment shadow and comprises the following steps: receiving expected state information of engineering machinery equipment issued by a preset server; receiving current state information reported by the engineering mechanical equipment; and when the current state information is different from the expected state information, issuing the expected state information to the engineering mechanical equipment. An equipment shadow concept and a message queue are used for realizing an asynchronous state issuing and data reporting communication mode; the engineering machinery equipment monitoring system for processing uplink and downlink data based on the mode can effectively solve the problem of poor remote scheduling management effect caused by low reliability of data uploading and issuing between the engineering machinery equipment end and the cloud service platform.

The embodiment of the invention provides a data processing method, a system and a device. The data processing method comprises the following steps that under the condition that a notification is received, obtaining a thread corresponding to the type to which the notification belongs; when the thread is in the first state, switching the thread from the first state to the second state to enable thethread to start timing; switching the thread from the second state to the first state after timing of the thread reaches a target task corresponding to the preset duration callback notification; and performing the target task. According to the data processing method provided by the embodiment of the invention, the effect of aggregating the same type of notifications in the timing period is realized, so that the execution frequency is reduced; besides, due to the characteristics of the idempotent tasks, the result of only calling back and executing the target task once after the same type of notifications are aggregated is the same as the result of executing the target task after each notification, so that the technical scheme provided by the embodiment of the invention also ensures the final consistency of the result.

The invention is suitable for the technical field of the computer, and provides a strong consistency read method of data, and terminal equipment. The method comprises the following steps: determininga data block from which data is to be read according to an IO request, redirecting a read operation to the local cache; if the data block is existent in the local cache, adding read locking; if a datastate in the data block is a first preset state, reading a MD5 value from the local cache; redirecting the read operation to an object storage unit; comparing the MD5 value with the MD5 value in theobject storage unit, if the MD5 value and the MD5 value are different, reading the data from the object storage unit, updating the data in the data block, setting the data state as the second preset stage, and updating the MD5 value in the local cache, removing the read locking, and ensuring the data strong consistency in the cache by adding a read lock; guaranteeing that the data in the cache isconsistent with the data in the object stage when being used as the first time through the MD5 value checking. The object storage service can be applied to an application with high data consistency requirement.

The invention discloses a method and device for processing a service request, and relates to the technical field of computers. One specific embodiment of the method comprises the steps of receiving atransaction completion state uploaded by each service, the transaction completion state comprising success and failure; if the services of which the transaction completion states are failed exist in all the services, retrieving the services of which the transaction completion states are successful from all the services; constructing a positive punching task for the service with the successful transaction completion state, and calling the service with the successful transaction completion state to enable the service with the successful transaction completion state to execute a positive punchingmethod. According to the embodiment, the technical problem that transaction consistency cannot be ensured can be solved.

The invention discloses an electric measurement laboratory management system based on a block chain technology, belongs to the field of management systems, and aims to solve the problems that electric measurement equipment detection lacks a unified informatization management and control mode, all parties separately record and store related data, information islands are formed, information asymmetry exists, data are easy to tamper, and the tracing efficiency is low. Comprising a user layer, a platform layer and an equipment perception layer, and the equipment perception layer transmits information to the user layer through the platform layer. Different from traditional distributed storage, the block chain network has the following characteristics: firstly, each participating node has a complete data storage process, and each node is independent and peer-to-peer, so that a single-point fault is avoided; secondly, each block comprises the data of the previous block, a chain structure is formed, and the history of the data is traceable; in addition, a distributed consensus mechanism ensures final consistency of storage and credibility and security of stored data.

The invention provides a method for realizing the consistency of a database and a cache by a cache deletion retry mechanism. The method comprises the following steps of: S1, receiving a database updating operation, and writing a request to update the database; S2, deleting fails due to the fact that problems occur in the cache data; S3, putting the key values which fail to be deleted into a message queue; S4, subscribing the message of the message queue, and obtaining a key value to be deleted; and S5, retrying to delete the cached data to ensure the final consistency of the cached data and the database. According to the method, the final consistency of the cache data and the database can be ensured through a cache deletion retry mechanism.

The invention aims to provide a final consistency distributed transaction processing method and device. The method comprises steps that a delay task related to a current order is generated in response to the detection of order payment success; an order payment result about the current order from the user equipment and a payment service result about the current order from the third-party payment platform are obtained based on the delay task; if the order payment result is inconsistent with the payment service result, service logic corresponding to the current order in the user equipment is recalled and modified, and after the number of retry times reaches a preset number of retry times threshold value, if the number of retry times is still inconsistent, a third-party payment platform is called to modify payment operation corresponding to the current order till data between the user equipment and the third-party payment platform is consistent; a data consistency compensation mode of the third-party payment platform is realized, and final consistency and low delay of the data between the third-party payment platform and the user equipment are ensured.

The invention aims to provide a cache-based inventory reduction method, device and system, and the method comprises the steps: carrying out the disassembly of original inventory data based on an inventory reduction request, and obtaining a plurality of pieces of inventory with a unique code; performing first cache verification on the plurality of stocks with the unique codes through distributed cache, and performing second cache verification based on a verification result to obtain identification information of stock rows; operating a database based on the identification information of the inventory line, and sending a current inventory change message; and confirming the inventory in the database and performing corresponding cache processing by monitoring the current inventory change message. Therefore, the original inventory is disassembled, the minimum granularity of the row lock is ensured, the impact of directly operating the database is avoided through the cache middleware, the inventory database is verified and the cache is updated twice through the asynchronous refreshing mode of monitoring the inventory change message, and the final consistency of the data is ensured.

The invention relates to a data synchronization processing method and device, computer equipment, a storage medium and a computer program product. According to the method, operation information of a distributed database is received, a mirror database is synchronously processed according to the operation information, and then a confirmation response message of the operation information is returned. The final consistency of the data can be ensured through a confirmation response message mechanism. And the operation information for synchronous processing comprises at least one of the first operation on the data in the distributed database and the second operation on the table in the distributed database, so that the data consistency of the distributed database and the real-time synchronous mirror image database can be comprehensively guaranteed. In addition, according to the embodiment, the mirror image database is realized based on the distributed file system, so that the load capacity of data writing and data query can be improved.