65results about How to "Improve transaction throughput" patented technology

The invention discloses a parallel transaction execution method based on a blockchain. Firstly, a data unit on the datachain is subjected to index numbering, the parallel transaction of a user needs to provide a data index which needs to be read and written for transaction execution in addition to basic transaction contents. The serial transaction of the user only needs to provide the basic transaction contents. A node arranges parallel processing according to the data dependency relationship of the parallel transaction, and the transaction which can not carry out concurrence and the serial transaction can be executed in sequence.

A high-performance distributed ledger and transaction computing network fabric over which large numbers of transactions (involving the transformation, conversion or transfer of information or value) are processed concurrently in a scalable, reliable, secure and efficient manner. In one embodiment, the computing network fabric or “core” is configured to support a distributed blockchain network that organizes data in a manner that allows communication, processing and storage of blocks of the chain to be performed concurrently, with little synchronization, at very high performance and low latency, even when the transactions themselves originate from distant sources. This data organization relies on segmenting a transaction space within autonomous but cooperating computing nodes that are configured as a processing mesh. Each computing node typically is functionally-equivalent to all other nodes in the core. The nodes operate on blocks independently from one another while still maintaining a consistent and logically-complete view of the blockchain as a whole. According to another feature, safe and performant transaction processing is provided using an optimistic concurrently control that includes a collision detection and undo mechanism.

Provided are techniques for increasing transaction processing throughput. A transaction item with a message identifier and a session identifier is obtained. The transaction item is added to an earliest aggregated transaction in a list of aggregated transactions in which no other transaction item as the same session identifier. A first aggregated transaction in the list of aggregated transactions that has met execution criteria is executed. In response to determining that the aggregated transaction is not committing, the aggregated transaction is broken up into multiple smaller aggregated transactions and a target size of each aggregated transaction is adjusted based on measurements of system throughput.

The invention discloses a universal SOCKET communication and process management platform applied to multiple scenes and a method. The universal SOCKET communication and process management platform is applied to a SOCKET service scene and a resident process management scene; a SOCKET service is operated in the SOCKET service scene; and a background application in the form of a plug-in is operated in the resident process management scene. Each scene comprises the following processes: operating a base framework: creating a set of processes for realizing service logic processing and waiting and responding to a user operation instruction and a report of a diagnosis process; and operating the diagnosis process: detecting the operation states of the created processes, and automatically restarting a service process which is abnormally stopped or died, such that continuous and steady operation of the whole platform can be ensured. In combination with the SOCKET service scene and the resident process management scene, the SOCKET service in the asynchronous mode can be realized; due to two platforms including an asynchronous communication platform and a service processing platform, complete functions are realized; the asynchronous communication platform and the service processing platform exchange data with a SOCKET communication mechanism in a UNIX domain through a message queue; therefore, the processing capacity is flexibly expanded; and the transaction throughput is improved.

The invention provides a distributed cache method based on Redis. The method comprises the following steps: 1, a client establishes a connection with a healthy access point; 2, the client initiates aread / write request to a certain access point, and the access point forwards the read / write request to a target data slicing node after receiving the read / write request; 3, the target data slicing nodeprocesses the read / write request and returns result information to an access machine, and then the access machine returns the result information to the client; 4, an application center, an access machine cluster and a Redis cluster aggregate monitoring indicator data into a monitoring data storage center, a monitoring module analyzes and reports the data to a monitoring center of an external component. 5, a management module provides management configuration for a configuration cluster, the access machine cluster and the Redis cluster, and provides a unified management portal and a visible page; and 6, a synchronization center obtains the data through a unified data access layer and synchronizes the data to the Redis cluster through the access machine cluster. The distributed cache method provided by the invention has the advantages of facilitating the distribution of applications.

In a main memory database system constituted of the dual memory architecture of PRAM and DRAM as a main memory, a method for updating data in PRAM and DRAM includes Move-When-Write, memory allocation scheme in the dual memory architecture, and a method for dividing and storing database components in the PRAM and DRAM, comprises: determining properties of database components; determining which the components have higher importance required for maintaining the consistency and integrity in a database according to the determined properties of database components; if importance of some of the database components is determined to high level, transmitting the determined high components to PRAM; storing the transmitted database components in PRAM; if importance of some of the database components is determined to low level, transmitting the determined low components to DRAM; and storing lower importance of database components to DRAM, and capturing as snapshot the stored database components by periods, thereby providing very high-speed response time and high transaction throughput by including a Persistent RAM as a main memory and 64-bit processor.

The invention discloses a method and a device for controlling a block processing task, belonging to the technical field of block chain, in the method and device provided by the present invention, theblock processing task is divided into successive multi-level processing subtasks, and at least one corresponding-level execution module is configured for each level processing subtask, and each levelexecution module continues to execute the level processing subtask on the next level processing subtask after executing the level processing subtask on the current level processing subtask on the block to be processed. As such, on one hand, the process subtasks at each level can be sequentially performed by the execution modules at each level; On the other hand, each level execution module continues to execute the next level processing sub-task of the block to be processed after executing the current level processing sub-task of the block to be processed, thus realizing the block processing tasks of processing multiple blocks to be processed in parallel, and further accelerating the processing speed of the block processing tasks between blocks.

The invention discloses a block chain network node load balancing method based on PBFT, the method is realized based on an alliance chain platform-super account book Fabric, and the system is dividedinto a web layer, a business layer Fabric-sdk-go, an intelligent contract layer namely a chain code layer, and a Fabric namely a block chain storage layer. According to the invention, a main node carries out transaction legality judgment, verification, hash calculation and the like. When a large number of transactions arrive at a main node at the same time, the workload of the main node is very large, the other nodes are in an idle state, and when block information is broadcasted, the large number of transactions can cause too large block output bandwidth of the main node and too heavy load, which is an important factor influencing the performance bottleneck of a block chain system. The load balancing method solves the problem, a part of work of the main node is completed by other nodes, the compressed transaction information is broadcasted, the network exit bandwidth is reduced, the transaction throughput of the system is improved, and meanwhile, the safety and the error-tolerant rateof the system are still ensured.

The invention relates to a block chain consensus method based on credibility assessment. According to the method, a weighted voting consensus based on trust values is adopted, and a consensus group isdynamically and randomly formed according to trust value ranking. Member of each consensus group has a voting weight in direct proportion to a trust value of the consensus group, and the trust valueis determined by long-time accumulated comprehensive performance. Therefore, only honest nodes show long-time normality and regularity, and can become one member of the consensus group. A miner in theconsensus group is randomly selected as a leader, the leader can generate a micro-block to pack the transaction, other nodes consensus the micro-block, and a round of work is finished. The method hasthree improvements: firstly, a novel leader and consensus group creation method is invented to ensure the randomness and fairness of selection; And secondly, a trust value calculation mode is createdbased on long-time accumulated comprehensive performance. And thirdly, a consensus algorithm based on the improved raft is created, and the throughput can be increased.

The invention provides a distributed accounting method and device, a storage medium and an electronic device, wherein the method comprises the following steps: obtaining a transaction event and storing the transaction event in a directed acyclic structure, wherein the transaction event comprises one or more transaction records; generating a stage block of the current round according to all transaction events stored in a directed acyclic structure in the current stage, and performing consensus processing on the stage blocks of the current round; after the consensus of the phase blocks of the current round is completed, connecting the phase blocks of the current round to the phase blocks of the previous round in a chain structure. The method combines a directed acyclic structure and a chainstructure organically, records transaction events through directed acyclic structure, so that transaction events can be processed in parallel, transaction throughput is improved, and transaction confirmation delay is reduced. The chain structure is used to store each phase block to make the transaction events in the block reach a definite consensus state, so a guarantee is provided for the execution of intelligent contract and the security of the system is improved.

The invention is applicable to the field of computers, and provides a fund account financial processing method and device, a computer device and a storage medium. The method comprises the following steps: receiving a collection or payment transaction initiated by a business platform; storing the collection or payment-for-another transaction and initiating collection or payment-for-another; after the collection or payment transaction succeeds, a to-be-processed fund record is generated, and an account and an account are separated out; account processing is carried out on the collection or payment transaction according to a preset account processing rule; And modifying the account balance according to the account processing result. According to the embodiment of the invention, by utilizing the fund account financial processing method, different fund processing modes are adopted for different businesses, so that a large amount of fund transactions are prevented from being processed in thesame time period, the business bottleneck caused by a high-frequency transaction account to a transaction processing system is eliminated, and the system transaction throughput is effectively improved.

A banking location having one or more transaction stations each with a secure automated cash recycler for receiving and dispensing money for customer deposits and withdrawals. The banking location may further include a remote assistance station for connecting a customer with a complicated transaction with a banking associate from a remote location who may complete the customer transaction without disrupting the customer transaction flow of the banking branch.

The invention discloses a blockchain efficient management architecture based on a cross-chain technology and a working method thereof, and particularly relates to the technical field of blockchains. According to the specific implementation scheme, the interoperability of the blockchain is improved by using a smart contract and a cross-chain bridge technology, atomic asset transaction among multiple mainstream chains is realized, and the transaction service charge is reduced; according to the lightning network technology of end-to-end bidirectional payment channel connection, only initial transaction and settlement transaction records are deployed to be uploaded, the atomic exchange process is simplified, and the expandability of the block chain is improved; a pluggable and replaceable consensus algorithm is used, and consensus algorithms with different characteristics are provided according to current actual application scene requirements, so that the overall operation efficiency of the system is improved; according to a distributed storage network of an interstellar file system, massive and multi-type data can be stored outside a chain; according to the transaction fragmentation technology, the blockchain transaction data is segmented and allocated to different node groups for parallel data processing, so that the blockchain transaction completion efficiency is improved.

A distributed transaction and data storage platform including a distributed notary ledger or blockchain and one or more individual user micro-identifier chains that together enable the secure effectuation and recordation of one or more transactions, and / or storage of data in an automated, real-time, zero-trust, globally data law and privacy law centric manner while maintaining transaction party confidentiality and preventing chain poisoning.

The invention discloses a database check point construction method based on a virtual memory snapshot. The method comprises the steps that only one affair process exists in a database, and when a write-in or modification request is received, turning can be carried out to complete the request through writing in the memory; only one scheduling process exists in the database, when the conditions are met, the scheduling process actively notices an affair process to initiate the action of establishing a check point, then the scheduling process receives reports of the affair process and a check point process, and the system state is updated; after the affair process receives the notice of the scheduling process, the operation of virtually storing snapshot pictures is established, and then the check point process is started; after the check point process is started, the check point writes all updated data and logs in the current memory into a disk according to the virtually stored snapshoot pictures, and the advantages that the throughput rate of affairs in a database system is increased, and database affair blocking or performance shaking caused by check point establishing is avoided are achieved.

The invention discloses a multi-version management method for reducing index maintenance overhead. According to the multi-version management method, recorded different versions are stored in database tables and stored recorded physical IDs are extracted by a database system; one or more indexes are arranged in the database tables; each record is endowed with a logic ID; the recorded logic IDs are stored in the leaf nodes of the indexes; the logic IDs are built to a mapping table of the physical IDs and meanwhile, the logic IDs are maintained to the mapping table of the physical IDs. By adopting the multi-version management method for reducing the index maintenance overhead, the maintenance overhead of indexes is simplified and the transaction processing throughput is improved.

The invention discloses a block chain transaction throughput improving method based on a fragmentation technology, belongs to the technical field of block chain networks, and aims to realize the effect of processing different transactions by different fragments by dividing a block chain into a plurality of subnets and dividing to-be-recorded transactions into different fragments through the fragmentation technology; finally, each fragment submits the respective Merkland to the leader node, so that the core node is integrated into a complete Merkland and packaged into a new block, the transaction throughput of the block chain is improved, and meanwhile, the Sybil attack and the double-bloom attack can be effectively resisted on the randomness and the rights and interests of the algorithm.

The invention relates to a consumer socialization zero-cash payment method and system, comprising the following steps: mounting a client-end, disposing a server, sending the payment request, transmitting the payment request, backing the payment result, transmitting the payment response. The system comprises a consumer device, a merchant device, a relay device contacting with the consumer device and the merchant device, a payment device contacting with the relay device, wherein the payment device is the bank inside payment platform. The method is capable of performing the socialization large-scale zero-cash consumption payment deal and covering all payment environments and very suitable for wide low-cost social consumption payment group; effectively screening the hacker risk, reducing the consumer use-cost, not disclosing the account information of the consumer for performing the consumption and payment, reducing the payment dealing risk, not changing the feature of the bank inside payment platform with short development period.

The invention discloses a parallel blockchain fragmentation method based on intelligent contract execution optimization. The method comprises the steps that each miner node obtains a combined appointment transaction from a peer-to-peer network and sends a combined appointment transaction to a preprocessing module; the preprocessing module compares the received contract transaction with a historical transaction and then performs grouping optimization; an intelligent contract scheduling module performs concurrent execution of the intelligent contract on the optimized transaction based on an SV-SCC algorithm, and calculates a final state; an executed miner node generates a new block; a new block generated by a miner node is sent to all network nodes for verification and is added to a block chain after the verification is valid, meanwhile, a new conflict record is synchronously sent to a preprocessing module, and the preprocessing module updates a feature information statistical table FIS.According to the invention, high concurrent execution of the intelligent contract is realized, higher transaction throughput is realized, the possibility of overheating of a single node is reduced, and a feasible scheme is provided for a large-scale transaction application scene.

The invention discloses a transaction request processing method of a database, related equipment and a storage medium. The method comprises the steps of receiving an update transaction request for a first data line in the database; if the first hot line update waiting queue of the first data line exists in the storage engine, writing the update transaction request into the first hot line update waiting queue; if the first hot line update waiting queue corresponding to the first data line does not exist in the storage engine, determining the queue length of a first line lock waiting queue corresponding to the first data line in the storage engine; when the queue length of the first row lock waiting queue exceeds a preset length threshold, creating a corresponding first hot row update waiting queue for the first data row in the storage engine, and writing the update transaction request into the first hot row update waiting queue; and in response to a preset trigger signal, adding the update transaction request in the first hot line update waiting queue into the first line lock waiting queue. According to the invention, the transaction throughput rate of the database system under thehigh concurrency condition is improved.

Improved administering of shared resources in a computer system. In a preferred embodiment, transaction throughput is improved and potential starvation eliminated by a ticket mechanism. The ticket mechanism provides a wait counter and a service counter. When a requested transaction fails, a wait counter is incremented and a wait value is sent to the requesting transaction source. As transactions are completed at the resource, the service counter is incremented and its value broadcast to transaction sources sharing that resource. When a source holds a wait count value that equals the service count value, the source can retry the transaction successfully.

The invention discloses an intelligent contract conflict detection method based on a directed acyclic graph. The method comprises the following steps: S1, enabling an endorsement node to extract a read-write set of transaction simulation execution results; s2, updating an intelligent contract conflict relation graph according to the read-write set, performing conflict detection, and generating a conflict relation mapping table of a directed acyclic graph; and S3, after transaction verification is completed and the transaction is added to the chain, updating the intelligent contract conflict relation graph and the conflict relation mapping table. The block chain intelligent contract conflict detection method provided by the invention has the beneficial effects that the smart contract in the transaction can be subjected to conflict detection in the endorsement stage, invalid transactions are judged in advance, and the invalid transactions are prevented from entering the sorting and verification stages. According to the invention, the directed acyclic graph is used for conflict detection of the smart contract, so that consumption of system resources can be greatly reduced, the transaction throughput rate of a block chain system can be effectively improved, and the system resource overhead can be reduced.

The invention discloses a transaction processing method and device, computer equipment and a storage medium, and belongs to the technical field of databases. The method comprises the steps of responding to an execution request of a target transaction; obtaining a logic execution life cycle of the target transaction; after the logic is subjected to the life cycle verification, executing a target transaction; in a transaction execution or verification stage, according to a target data item in a reading set of the target transaction and a to-be-written data item in a writing set, adjusting the logic execution life cycle; after the life cycle verification of the adjusted logic is passed, submitting the target transaction; the mechanism for processing the transaction based on the logic execution life cycle does not need to depend on a lock mechanism, so that the method is more suitable for an internet application scene with more reading and less writing, the transaction throughput of the distributed database system can be improved, the capacity of the system can be expanded, and the transaction processing performance of the system can be improved.

The embodiment of the invention provides a trusted delegation type under-chain acceleration solution method and system, and the method comprises the steps: transferring an asset state from a parent chain to a side chain based on a preset double-layer protocol architecture; creating an acceleration channel in the side chain, wherein the transaction execution states of the smart contract at any twonodes in the acceleration channel are kept consistent; and completing related operation of the smart contract based on the acceleration channel. According to the trustable delegation type under-chainacceleration solution method and system provided by the embodiment of the invention, on the basis of reserving the decentralization and non-tampering characteristics of the block chain, a double-layerprotocol architecture is used, the transaction is transferred from the chain to the under-chain for execution, the transaction throughput of the block chain is improved, and the block chain businesslanding is realized.

The invention relates to a supply chain data double-chain storage optimization method based on a block chain, which utilizes a permission block chain technology, so that uplink data cannot be tampered, the information transparency is improved, and the problem of information asymmetry is solved. By the network model, point-to-point transmission is achieved. The security risk is reduced through identity permission; due to the double-chain model design of a main chain and an abstract chain, network access nodes can selectively store according to own requirements, so that the problem of waste of block chain storage space is solved to a great extent, and the storage threshold of node network access is reduced; an improved DPoS + BFT consensus mechanism is adopted, so that the consensus block output speed is increased, transactions can still be efficiently confirmed even under the conditions of many nodes in the whole network and large transaction volume, the performance and throughput are improved, and a supply chain system is greatly optimized.

The invention belongs to the technical field of medical Internet of Things, and discloses a medical Internet of Things transaction system based on a blockchain. According to the system, on the basis of providing transaction functions such as remote diagnosis and data transaction for each participant of the medical Internet of Things system, distributed storage is realized by synchronizing health data indexes through a block chain, the availability of patient health data is ensured, safety and privacy of patient health data are guaranteed through strategies such as health data custom encryption, transaction authorization data access, participant identity authority control, hospital agent query and participant credit point control. In order to adapt to scene requirements of mass transactiondata of the Internet of Things, a consensus algorithm based on effective transaction volume proof is designed, the consensus algorithm ensures that consensus nodes with the largest effective transaction number are collected within the same time to obtain a block right, and compared with common consensus algorithms such as workload proof and the like, the system has the advantages of higher throughput, capability of allowing consensus nodes to dynamically enter and exit, relatively fair consensus election and the like.

The invention relates to the technical field of blockchains, and discloses a food and drug traceability method based on blockchain, and the method comprises the steps of determining related information required to be added to different types of enterprises in a food and drug supply chain transaction process; obtaining a food and drug supply chain process based on the blockchain by utilizing a blockchain modeling method based on the food and drug supply chain; performing identity verification on participants in the food and drug supply chain; utilizing a blockchain fragmentation load distribution strategy based on blockchain node performance; enabling the blockchain node to perform consensus verification on the data provided by the participants in the food and drug supply chain, and if thedata passes the consensus verification, enabling the blockchain node to store the food and drug data by using a collaborative storage scheme; performing index construction by utilizing an improved blockchain index storage strategy, and realizing index query of food and drug traceability according to the constructed blockchain index. The invention further provides a food and drug traceability system based on the blockchain. According to the invention, traceability of food and drugs is realized.

The embodiment of the invention provides a block chain consensus method and device, equipment and a storage medium, and relates to the technical field of block chains, and the method comprises the steps that a node generates a target block based on transaction data and a verifiable delay function, or synchronously obtains the target block from other nodes. And determining a target sub-block chain to which the target block belongs from the plurality of sub-block chains, and adding the target block to the target sub-block chain. Then, respectively obtaining respective corresponding effective block sequences from the plurality of sub-block chains; and on the basis of the obtained logic clocks corresponding to all the effective blocks, all the effective blocks are globally sorted, and a global block chain is obtained. The global block chain is obtained in a multi-chain consensus mode, and the expandability and transaction throughput of the block chain system in a large-scale open network environment are improved. Based on the logic clocks corresponding to all the effective blocks, when all the effective blocks are globally sorted to obtain the global block chain, the security of the multi-chain system can be better improved.

The invention discloses an election type Byzantine fault-tolerant consensus algorithm based on proof of work, and the algorithm can meet a plurality of technical performance indexes of a block chain,such as decentralization, efficiency, dynamics and energy consumption, and can provide better service for the application of the block chain. The method provided by the invention mainly comprises fourparts: 1, consensus algorithm overall architecture; 2, a workload proof module; 3, an election algorithm module; and 4, a Byzantine fault-tolerant module is used. By implementing the embodiment of the invention, the performance of the block chain can be improved, so that the block chain is suitable for more fields.

The invention provides a tree block chain processing method and device and a storage medium, the tree block chain allows a plurality of blocks to exist at the same block height, the method is suitablefor mining nodes, and the method comprises the following steps: determining a tree chain which can be composed of blocks passing consensus verification and has the maximum workload as a tree main chain of a current node; and mining by taking each leaf block of the tree main chain as a front block of the new block. According to the invention, the data structure of the block chain is configured tobe the tree chain. The tree-shaped main chain is determined by taking the workload as the reference, and each leaf block of the tree-shaped main chain is taken as the front block of the new block, sothat the convergence of the tree-shaped main chain of each block generated in the system at the same time is ensured, and the transaction throughput of the block chain system is improved.