280 results about "SequenceNumber" patented technology

The invention relates to the technical field of data flow control, in particular to a heterogeneous data flow synchronous control method and system.The method comprises the following steps that multi-source data segment receiving time is obtained, a time interval sequence is constructed, an interval difference value and a synchronous difference quantity are calculated, the sensitivity level is judged, a channel throughput change is extracted, a descending section is marked, and a priority index is generated; and mapping the high-sensitivity stream to a first-stage or second-stage output path to sort and distribute key stream segments, judging that serial numbers are continuously combined or independently output, and generating intersection and sequence information. According to the method, the time interval sequence is constructed based on the receiving time of the multiple data sources, the interval deviation is quantified, the labels are divided through the synchronization difference quantity, the sensitive level structure is established, differential management of the synchronization precision requirement of the heterogeneous data streams is achieved, the response efficiency and the alignment precision of the high-sensitivity data segments are improved in the data distribution process, and the data distribution efficiency is improved. And meanwhile, the competition of a low-sensitivity section for output resources is reduced, and the synchronous time sequence coordination capability and the channel bandwidth utilization rate in a multi-source heterogeneous environment are improved.

The invention discloses a control system and method for an automatic beer production line, relates to the technical field of automatic control, is used for solving the problems that state judgment is lagged and abnormal trend is difficult to identify in time, identifies electronic tags of key equipment through an RFID reader-writer, imports models and serial numbers into a database, and automatically associates operation parameters. The distributed sensors collect temperature, pressure, flow and vibration data in real time, the analysis unit calculates the operation deviation and the health degree, a multi-condition control strategy is configured through the programmable logic controller based on the health degree, a time window and a task priority algorithm are combined, real-time data and historical data are compared to recognize abnormity, and the real-time data and the historical data are analyzed. And a fuzzy control algorithm is fused to generate an adjustment instruction, the equipment state is automatically adjusted, time sequence modeling is utilized to analyze whole-process data, a start-stop strategy is formulated, energy distribution and process optimization are performed, and intelligent scheduling and self-adaptive optimization of the beer production line are realized.

The invention relates to PDCP SN gap reporting and a state variable RXNEXT. A method, an apparatus, and a computer program product are provided. In the context of a method, the method comprises receiving (302) a message from another PDCP entity (another of the 110 / 112), the message indicating at least one sequence number. The method further comprises updating (304) a first state variable based on the at least one sequence number, where the first state variable indicates an expected sequence number of a next expected service data unit (SDU) to be received, and wherein the updating of the first state variable includes increasing the first state variable by a lowest sequence number that is higher than a reference value and that is associated with the SDU that is not considered to be discarded.

The invention provides a data synchronization method and device, equipment and a storage medium, and relates to the technical field of data processing, in particular to the technical field of databases, distributed storage technologies and data synchronization. According to the specific implementation scheme, the method comprises the steps that according to the sequence number sequence of a to-be-applied first physical log, log stream continuity verification is conducted on each log record contained in the first physical log in sequence; under the condition that the log stream continuity verification is passed, performing modification chain integrity verification according to a first identifier of the log record and a current version identifier of a target data page to be modified of the log record; wherein the first identifier is used for indicating a second physical log which finally modifies the target data page; and under the condition that the integrity verification of the modification chain is passed, modifying a target data page according to the log record.

The invention relates to the technical field of energy storage systems, and discloses a multi-type ammeter mixing method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining the ammeter types of a plurality of ammeters connected to the same communication port; configuring a communication address for each electricity meter according to the type of the electricity meter and a preset serial number or configuring a communication address for each electricity meter according to an address label; and establishing communication for each electricity meter according to the communication address. According to the invention, the same communication port can be compatible with the access requirements of different types of ammeters, the method is suitable for a complex scene in which multiple ammeters coexist, the tolerance of the energy storage system to different ammeters is improved, and the problem that the same communication port is difficult to adapt to the mixed use requirements of multiple types of ammeters is solved.

The invention provides a log data reading method and device, equipment, a medium and a program product, and relates to the field of big data. Obtaining a mapping relationship between a plurality of timeline identifiers in a database and corresponding start log serial numbers; the timeline identifier is an identifier generated when the main database and the standby database are switched, whether the log data cross different timeline identifiers or not is judged according to the mapping relation and the starting log serial number and the ending log serial number of the log data, and under the condition that the log data cross different timeline identifiers, the log data cross different timeline identifiers. Reconstructing a log reading process according to a start log serial number of a new timeline identifier, wherein the new timeline identifier is different from the plurality of timeline identifiers; according to the method, automatic reconstruction of the log reading process after main and standby switching is achieved, the problems of low efficiency and poor real-time performance caused by manual operation are avoided, and continuity and consistency of data synchronization of the source end and the target end are guaranteed.

The invention discloses a dual-channel adaptive network stability testing method and system, and belongs to the technical field of computer network testing. The system adopts a dual-channel asynchronous communication architecture in which a control channel and a data channel are physically separated, instructions and state information are transmitted through an independent TCP control channel, and high-speed test data streams are transmitted through a UDP or TCP data channel. The method comprises the following steps: dynamically and adaptively adjusting a timeout parameter based on real-time network delay detection; nanosecond constant interval packet sending control is realized by using a high-precision monotonic clock source and busy waiting compensation mechanism; a packet loss detection, positioning and ACK confirmation mechanism based on the serial number is realized in an application layer; and real-time statistical display and idle detection automatic termination are realized through multi-thread parallel processing. According to the invention, the precision, the stability and the adaptive capability of network testing are remarkably improved, and the method is suitable for long-time stability testing in various scenes such as a high-speed Ethernet, a satellite link, an industrial Internet of Things gateway and the like.

The invention provides an end-to-end reliable retransmission method, a computing node and a system for an AI intelligent computing network. The method comprises the following steps: a source end and a destination end establish synchronization through a handshake mechanism; the source end sends a data packet to the destination end, and locally caches the sent data packet; the destination end receives the data packet, compares the serial number of the data packet with the expected serial number of local maintenance, and returns an acknowledgement message or a retransmission request to the source end according to a comparison result, and the acknowledgement message carries the current expected serial number; in response to the confirmation message, the source end releases all the data packets of which the serial numbers are smaller than the expected serial number carried by the confirmation message in the local cache; or, in response to the retransmission request or transmission timeout, acquiring the corresponding data packet from the local cache for retransmission; and after the source end sends the last data packet, if the confirmation message is not received within the preset time, actively sending a state query request to the destination end to obtain the receiving state of the last data packet.

The invention discloses an HTTP (Hyper Text Transport Protocol) text restoration method based on DPDK (Data Platform Development Kit), which relates to the technical field of computer networks, and adopts a multi-process decoupling architecture to respectively run processes such as flow collection and protocol analysis, fragmentation recombination and text restoration, formatted message splicing, text restoration timeout waiting and the like in independent CPU (Central Processing Unit) cores; and efficient and lock-free data transmission is carried out by using a ring mechanism of the DPDK. Different from a traditional memory splicing scheme, the data offset is calculated based on the TCP serial number, the load content is directly written into the corresponding position of the file, the problems of message disorder, packet loss, retransmission and the like are effectively solved, an atomic renaming mechanism from the file ID1 (intermediate state) to the file ID2 (complete state) is adopted, and accurate migration of the file state is ensured. Besides, the invention innovatively provides a bidirectional asynchronous scheduling mechanism based on data export and text restoration state monitoring, so that the data export process can continuously keep high throughput, and the overall processing capacity of the system is ensured.

The invention relates to the field of information security, in particular to a data security processing method, a computer program product, electronic equipment and a storage medium. The data security processing comprises the steps of obtaining to-be-transmitted target data; encrypting to-be-transmitted target data by using the key to obtain a ciphertext; packaging the ciphertext, the serial number and the truncation message authentication code to obtain a message frame; the truncation message authentication code is generated based on the ciphertext, the serial number and the key; and sending the message frame to a receiving end, so that the receiving end verifies and decrypts the message frame, and the data security can be improved.

A method, computer program product, and computing system for processing a plurality of packets transmitted from a first computing device to a second computing device. A packet sequence number associated with each packet is identified. An error-detecting code representation is generated using the packet sequence number of each packet. A packet that is missing from the plurality of packets is identified. A packet loss pattern associated with the plurality of packets is identified by comparing the error-detecting code representation with a plurality of entries of a high probability loss pattern memory table.

The invention discloses a data transmission method, device and equipment and a storage medium, and relates to the technical field of communication, and the method comprises the steps: transmitting a first notification to a transmitting end under the condition that a target data packet with an expected serial number is not received, so as to instruct the transmitting end to retransmit the target data packet; and under the condition that the target data packet is repeatedly received, sending a second notification to data forwarding equipment to indicate the data forwarding equipment to remove a target transmission path associated with the target data packet. According to the method and the device, the condition that the receiving end requests data retransmission from the sending end is effectively reduced by removing a high-delay transmission path, so that the throughput rate of the system is improved.

The invention belongs to the field of computer networks, data compression and mobile internet and wireless communication, and discloses a TCP (Transmission Control Protocol) data packet compression and aggregation self-adaption method, which comprises the following steps of: 1, receiving a TCP data packet and separating a header from a payload; step 2, storing the effective load part; step 3, compressing the head and updating context data according to the serial number, the confirmation number, the mark and the window size field of the head; step 4, combining the compressed header with the effective load to obtain a compressed message; 5, extracting the compressed messages according to a set aggregation threshold value, aggregating the compressed messages, and sending the aggregated compressed messages to a data link layer; and step 6, storing the operation records, comparing the operation records with the previous N operation records, and changing a set aggregation threshold according to a comparison result. According to the invention, the message can be efficiently processed under the condition of a complex network, so that the overall network throughput and the message processing efficiency are improved.

The invention belongs to the technical field of computer network communication, and provides an RDMA-oriented reliable connection fault rapid recovery method and system, the method is executed by a first communication end, communication is established between the first communication end and a second communication end through a queue pair QP, and the queue pair QP is used for bearing service data transmission. The first communication end reserves resources after the QP enters an error state, and sends a PROBE control frame to the opposite end through the control plane queue pair; the second communication end decides to reuse the original QP or allocate a new QP (reuse an original protection domain, a memory registration area and a completion queue) according to the local QP state, and returns a QP number and a start packet serial number in an RESP frame; and the first communication end updates the local QP context and drives the state machine to switch to a ready sending state. The whole process does not need to destroy the QP and does not depend on CM handshake, the recovery time delay is less than 0.5 millisecond, and the method is transparent to the upper layer application and is suitable for the RoCE v2 network environment.

The invention belongs to the technical field of data processing, and particularly discloses a multi-feature code matching method, a multi-feature code matching device, electronic equipment, a medium and a program product. Single feature code original information including identification information, matching attribute information, user association information and matching state information is constructed; judging the rule type according to the anchor point flag bit, if the rule is a common rule, querying a combination type and a serial number through a combination identifier, and executing hierarchical multi-feature code matching; and if the rule is the anchor point rule, executing pure anchor point feature code matching based on the anchor point type and the anchor point identifier. According to the method, differentiated processing is carried out between a common rule and an anchor point rule, so that the problems of high complexity, table item expansion and large resource occupation of a multi-feature code combination rule are effectively solved, efficient identification and matching of multi-dimensional message features are realized, and the method has the advantages of high processing performance, low resource consumption and good expansibility.

The invention discloses an anti-quantum certificate signature verification method, which comprises the following steps: signing and issuing a traditional certificate to a certificate issuing mechanism, and carrying out abstract operation processing on a serial number of the traditional certificate to obtain an abstract of the traditional certificate; issuing an anti-quantum certificate to a certificate issuing mechanism, and adding the abstract of the traditional certificate into an extension item of the anti-quantum certificate, so that the anti-quantum certificate is bound with the traditional certificate; when the security of the certificate needs to be verified in the interaction process with other application systems, performing signature verification processing on the traditional certificate; and after the signature verification of the traditional certificate is passed, carrying out signature verification processing on the countermeasure quantum certificate, and if the verification is passed, considering the certificate as a trusted certificate. The invention further discloses a device for implementing the anti-quantum certificate signature verification method, computer equipment and a storage medium. According to the method, the potential risk that a traditional digital certificate is attacked by quantum during use can be well solved, and the security of the certificate is greatly improved.

The invention discloses a memory device management method and device, and relates to the field of computers.The method comprises the steps that field data of N bytes are extracted from serial existence detection data of a server memory device, and the bytes comprise key fields such as manufacturer numbers, production place information, production years, production weeks and serial numbers; and the target sequence identifier is generated according to the preset rule combination, and the identifier completely reflects physical factory information such as a manufacturer, a production place, time and a unique serial number of the memory device, so that the purpose of unifying memory sequence identifier display is achieved, and the technical effect that complete memory information can be accurately checked in real time without physically disassembling a server is achieved. The operation and maintenance efficiency of the server is improved, the hardware management cost is reduced, and the reliability and applicability of the system are enhanced.

In a computing network implementing an adaptive load balancing scheme using entropy values (EVs) to select network paths, the next expected packet sequence numbers (PSNs) sent along different paths are tracked. A generation number is increased to obtain a new EV and a last probe packet is sent to clear an old EV. If a starting PSN is divisible by a number k, an entropy slot is derived for each PSN using a modulo function based on k.

The invention discloses a station model-based automatic matching method for instrument resources and test methods, which comprises the following steps of: scanning a serial number of a tested piece on a production line according to an issued test task, if a unique number of a product type corresponding to the serial number does not exist, reading and analyzing a product specification, and if the unique number of the product type corresponding to the serial number does not exist, reading and analyzing the product specification; selecting a corresponding test method from a test method library according to a test method required by a product specification, obtaining a corresponding station model according to the test method, configuring a test instrument required for testing the tested piece according to the station model, and planning a physical station; and connecting a required test instrument with the tested piece, and testing the tested piece through a test method determined by the station model. According to the application, the corresponding station model can be generated according to the type of the test product, the instrument resources are automatically allocated on the basis of the station model, the test method is generated, the production line management is optimized, and the automatic test in which the instrument resources are matched with the test method is realized.

Provided are techniques at least two pairing strategies in a contact center system, involving a method, a system and an article of manufacture. The method of present disclosure includes: assigning sequence numbers to a series of events; initiating a first pairing strategy based on the sequence numbers; ending the first pairing strategy based on the sequence numbers; initiating a second pairing strategy based on the sequence numbers; ending the second pairing strategy based on the sequence numbers; assigning a first set of values to contacts assigned by the first pairing strategy; assigning a second set of values to contacts assigned by the second pairing strategy; and determining a metric that compares the first pairing strategy with the second pairing strategy based on the first and second set of values. The techniques of present disclosure can get rid of shortcomings and / or drawbacks of a time-based benchmark.

This application relates to the field of smart terminal technology and provides a method, system, apparatus, terminal device, and storage medium for multi-user collaborative editing. The method includes: immediately executing the operation instruction when a user's operation instruction is detected and updating the execution result to a local transient state; sending the operation instruction to a server, where the server performs conflict detection on the operation instruction, assigns a sequence number to the operation instruction, generates a pre-ordered operation instruction set, and updates the global baseline state; receiving the pre-ordered operation instruction set broadcast by the server; comparing the local transient state with the global baseline state based on the pre-ordered operation instruction set, and if there is a state difference, changing the local transient state to make it consistent with the global baseline state, and updating the consistent local transient state to the local baseline state. This application can efficiently and reliably achieve eventual consistency of the states of each client, improving the smoothness and efficiency of multi-user collaborative editing.

Systems and methods are directed to seamless failback after an unplanned failover. The method involves executing a truncate-and-restore command on a primary topic of a primary cluster, performing checks on a secondary topic to ensure it is a mirror topic in a stopped state with valid identifiers and offsets, and transitioning the primary topic to immutable state. The method further includes comparing sequence numbers to ensure safe truncation, truncating partitions to match the secondary topic's log end offsets, and clamping consumer group offsets. The primary topic is then converted to a mirror state, enabling active mirroring. A reverse command is then executed to complete the failback process, restoring the primary topic to a writable state.

The application provides a database replication method and system, the method comprises the following steps: responding to a binary change log and performing analysis, extracting an initial log source sequence number, a timestamp and an associated partition identifier, and then obtaining a database partition preset sequence number; if the two sequence numbers are not continuous, the timestamp is valid, and the initial log source sequence number satisfies a preset first condition, a new independent numerical range is created and a target missing sequence number interval is identified; a data generation log supplement signal is generated based on the above data and sent to a producer cluster, so that the producer cluster feeds back a missing sequence log; based on the independent numerical range and the database partition preset sequence number, a database partition first sequence number is obtained, and the replication of the database is completed. The database replication method provided by the application avoids the problems of repeated data insertion and missing log omission supplement, realizes efficient consistent replication of the database, and guarantees the stability and reliability of the database replication in a multi-cluster scenario.

The application discloses a compression method of HCI support command bit mask and operation code mapping table, a storage medium and equipment, and belongs to the technical field of communication. The method comprises the following steps: sequentially setting a first byte for an operation code according to a bit mask serial number sequence in the mapping table, wherein the first byte comprises a 2-bit branch control mask; according to four combinations of the 2-bit branch control mask, the four combinations are named as a first branch control mask, a second branch control mask, a third branch control mask and a fourth branch control mask; the first branch control mask is used to represent a 2-byte operation code with a continuous quantity of multiple; the second branch control mask is used to represent a 0-byte operation code with a command of RFU; the third branch control mask is used to represent a 1-byte operation code with a high-order byte of a previous operation code; and the fourth branch control mask is used to represent a 1-byte operation code with a continuous quantity of one. According to the application, the size of the HCI support command mapping table is further compressed, and the resource consumption is reduced without significantly increasing the CPU overhead during searching.

A processing module for a communication device includes memory for storing a key and processing elements. These elements receive a current sequence number and a random number from a network entity, and check if the current sequence number is within a range based on a previously received sequence number stored in memory. If not, they generate a sequence number encryption key from the random number and stored key, encrypt the previously received sequence number using a block cipher encryption function, and send the encrypted sequence number in a response message to the network entity.

A system and method for reconciling data from a local database streamed to a Cloud storage service is disclosed. A data transaction is received from a structured query language (SQL) database service operated by a server. The transaction includes log sequence numbers and corresponding data records. The log sequence numbers are stored in a change data capture (CDC) table. The sent data transaction is streamed via a data integration service. A storage object service stores the sent data into an object storage service bucket. A data reconciliation service deploys a cloud trail target to generate a log file of log sequence numbers from the sent data stored in the object storage service bucket. The log file of log sequence numbers is compared with the log sequence numbers in the CDC table. A missing data record is flagged to an exception table based on the comparison. An alert is issued for the missing data record.

The application discloses a high-concurrency short link generation and analysis method, which combines the advantages of short link generation technology and uses the Redis INCRBY command and a random number code to generate a sequence number with an increasing trend. The sequence number is mapped by using a 62-base hash algorithm to generate a short link. This method not only realizes the uniqueness of the short link, but also has multiple advantages such as high performance, high security and low storage space. The method can effectively manage the short link, improve the performance and security of the system, and save storage space.

To provide a high-performance storage system.SOLUTION: A non-volatile storage has a persistence area and a cache data log area. A memory has a cache data log area. A processor stores data for the write request in the cache data log area, and responds to the write requester by storing the log header that has the sequence number and the data stored in memory in the cache data log area. The processor registers the sequence number of the log header in the invalidation table, destages the data stored in memory to the persistence area, creates a log header that has a sequence number, and registers the sequence number in the invalidation table. When collecting the cache data log area by garbage collection, the processor deletes the log header and corresponding data that have a sequence number older than the sequence number registered in the invalidation table from the cache data log area to release the storage space.SELECTED DRAWING: Figure 4

A computing system (500) is configured to detect a Transmission Control Protocol (TCP) session hijacking attack on a TCP session. In particular, the computing system monitors for nonsequential packets of the TCP session. The nonsequential packets each comprise a sequence number (220) that is different from a next expected sequence number of the TCP session. The computing system (500) calculates, for each of a plurality of time intervals, a variation metric representing an extent to which the sequence numbers (220) of the nonsequential packets received in the time interval differ from the next expected sequence number. The computing system determines a variation baseline representing a trend of the variation metrics over time, and detects the TCP session hijacking attack on the TCP session based on the variation metric in a given time interval being different from the variation baseline by less than a threshold.