54results about How to "Guaranteed Continuous Availability" patented technology

The present invention discloses a method and a system for service quality monitoring in a network comprising radio interfaces. The measurements are end-to-end measurements between the end user and chosen network element. The measurements are implemented using monitoring stations which can monitor the traffic passively or actively by transmitting test signals. The antenna beam directions of the monitoring stations can be controlled. The performance server works as a counterpart of the active tests. A reporting suite may define the performed measurements and it also collects the measurement data from different monitoring stations. Monitoring data from several corporate intranets can also be collected to an external server through internet connection.

A method, system and program product for backing up a replica in a cluster system having at least one client, at least one node, a primary replica, a secondary replica, and a secondary-backup (S-backup) replica each replicating a process running on the cluster system. A hierarchy is assigned to each of the primary, secondary and S-backup replicas. The failure of one of the replicas is detected and the failing replica is replaced with one of lower hierarchy. The replica having the lowest affected hierarchy is regenerated to reestablish the primary replica, secondary replica, and S-backup replica.

A method and system for constructing a social network using advanced content-based indexing, data and index sharing, and a peer-to-peer network in conjunction with a web site interface. The system uses novel indexing techniques to identify and share common interests among users of the network, and integrated peer-to-peer software facilitates data sharing based on these interests.Users who wish to join the social network download client software from the network's web site. When installed, the software indexes data on the user's local storage devices by considering possible high- and low-order links between data elements, mimicking human intuition. The indexing software generates an index of user data that is partitioned or into separate topic indexes. This index represents a cross-section of the user's interests. The user is then able to join various “friend” groups on the network, and to select by topic which portions of the index are shared with which friend groups.The client software implements a novel mesh-based, self-healing peer-to-peer protocol for sharing both topic indexes and the indexed data, according to the user's selections. The social network's servers use the index to automatically generate an attractively individualized user profile page. The interface of the social network's website works in conjunction with the indexing and sharing software installed on the user's computing device. Updates to the user's index may cause notifications to be displayed on the web pages of friends who share the same topic. Users may use the web site to select to share data, which is then carried out transparently by the peer-to-peer software installed on the users' devices. This system provides users greater convenience and utility in using the functions of a social networking web site to share data, without having to upload data manually to a server. Versions of the software running both on personal computers and on smaller mobile devices are described.

The invention is suitable to be used in a field of traffic information coding, and provides a method and a system for updating road codes and a map data server. The method comprises the following steps of: according to a new-edition map, generating node data of a new road network; matching the generated nodes of the new road network with the nodes of the old road network; and coding the non-matched nodes of the new road network. In the method, the nodes of the new and the old road networks are matched, the nodes which are successfully matched of the new road network use the codes of the nodes of the old road network, the nodes failed to be matched of the new road network are coded according to the type to which the nodes belong, so that the method for updating the road codes is realized. Moreover, the uniqueness and the continuous usability of the road codes in the digital map in different editions are ensured; and in particular, under a condition that the map editions of the ATMS and the terminal are not synchronously updated, the method can ensure that the terminal uses the majority of the information data which are sent by the ATMS and related to the traffic network without updating the map edition.

The invention discloses a distributed cache architecture with a task distribution function, which comprises a distributed task scheduling system, a relational database Mysql and a redis distributed cache system. The dynamic distributed cache architecture solves the situation that the traditional database can not process and access a large amount of data. The invention discloses another cache method adopting the distributed cache architecture, can achieve automatic task distribution and fault tolerance for scenes in which computation is required, and guarantees the reliability during processing.

The invention relates to a method for switching servers of a SIP (Session Initiation Protocol) communication terminal, which comprises the steps of: a, transmitting registration information to the SIP servers by a switching device; b, starting different timers for switching the servers by the switching device according to the number of the configured SIP servers and the registration condition of current servers; c, starting the procedure of switching the servers when the failure response of the servers is received by the switching device; d, starting the procedure of switching the servers when logout fails or an error response is received; e, returning to transmit the registration information to the SIP servers after waiting for registration refreshing time if the information of a characteristic code of 2000K is received by the switching device; f, registering again when any non-registration affairs fail; and g, transmitting heartbeat information in definite time by the switching device so as to detect whether the servers fail or not. The method solves the problem of error switching caused by abnormal conditions of networks, and can correct the error switching in time and enable VOIP (Voice over Internet Protocol) services to be in a usable state all the time.

The invention discloses an Nginx-based highly-available MySQL database realization method. The method comprises a Web server cluster, a master-subordinate database server cluster, an Nginx reverse proxy server, a page buffering server and a data buffering server. A user sends a connection request to the Nginx reverse proxy server; the Nginx reverse proxy server transfers the request to the Web server cluster; the Web server receives the request, and checks whether or not relative data exists in the page buffering server and the data buffering server; if relative data exists, the buffering data can be directly utilized; if the relative data does not exist, then the Web server is connected to a tool DBConnection via a database to analyze SQL sentence to determine read-or-write operation and is connected to the master-subordinate database server; and the master-subordinate database server conducts relative operation and returns a result to the Web server. By the use of the method, data reading and data writting can be separated.

A method for producing hard copies of electronic information employing a portable personal receiving device includes the steps of selecting information to print and utilizing the receiving device to identify available printers based on the location of the receiving device for printing the selected information in hard copy form. The portable receiving device is connected to one of the available printers and the selected information is printed in hard copy form. A system for producing hard copies of electronic information employing a portable personal receiving device includes a portable receiving device having a program enabling selection of information to print. The portable device includes a program to identify available printers based on the location of the receiving device. A communications link connects the portable receiving device to an available printer. The receiving device may be a cell phone and global positioning satellite functionality and / or cell phone tower positions may be employed to determine the location of the receiving device.

The invention discloses a method and device for joining an alliance chain and quitting the alliance chain. The method for joining the alliance chain comprises the steps that a first node receives a joining request broadcasted by a target node; the validity of the joining request is verified based on the valid certificate list; when the validity verification is passed, the first node performs a consensus process in the alliance chain based on the joining request which is not subjected to threshold encryption; and when the joining request passes the consensus, the first node sends a first message to the target node. The alliance chain quitting method comprises the steps that a first node receives a quitting request broadcasted by a target node; the validity of the quitting request is verified based on the invalid certificate list; when the validity verification is passed, the first node runs a consensus process in the alliance chain based on the quitting request without threshold encryption; and when the quitting request passes the consensus, the first node sends a first message to the target node. Based on the process, the efficiency of adding the target node into the alliance chainor exiting from the alliance chain is relatively high.

The invention discloses an online update method of a distributive storage system. The method comprises the following steps: acquiring node information of an obtained node IP to be updated, and performing backup copying and storing on the acquired node information; updating the version of each node to be updated, and querying the cluster state of each updated node; in case of failure in updating, recovering the node information of the failed node on the basis of the node information which is subjected to backup copy in advance, and recording the update failure information; and finishing the current update. According to the method, the version of each node is updated, and the storage service remains in the updating process; various abnormal condition are automatically handled during updating; the distributive storing system can be smoothly updated in the application scene, so that the user experience is improved. The invention also discloses an online updating device and equipment of thedistributive storing system and a readable storage medium which have the beneficial effects.

The present application provides a business processing method and device based on idempotent number verification, the method comprising: in response to an idempotent number acquisition request initiated by the caller, generating an idempotent number with reference to a randomly determined target database and the current business type ; Return the idempotent number to the caller; in response to the business processing request initiated by the caller, the business processing request includes the idempotent number, and check the idempotent number; if the verification is not If passed, the caller is notified to re-initiate the idempotent number acquisition request; in response to the idempotent number acquisition request re-initiated by the caller, the idempotent number is generated according to the database that is mutually active and standby with the target database. The embodiment of the present application can ensure the implementability and high availability of the idempotent number check, and also ensure that the business processing can be continuously available.

The invention provides an implementation method of on-line upgrading firmware in a solid state hard disk, which is applied to the solid state hard disk, comprising the following steps: receiving a firmware upgrading command sent by a host; when it is judged that the mirror file in the solid-state upgrade command is complete, storing the mirror file; setting the state of PCIe Unit in the solid state drive to CRS state; judging whether the CRS state is successfully set according to the message reception status of PCIe Unit; if so, reading and writting the mirrored file to each CPU of the solid state drive. Therefore, this method can replace SSD firmware without power-down and power-up processing to SSD, thus ensuring the normal operation of enterprise equipment and the continued availabilityof services and services. The invention also provides a system for realizing on-line firmware upgrading in a solid-state hard disk, the solid-state hard disk and a computer-readable storage medium, all of which have the beneficial effects mentioned above.

The invention discloses an ad hoc network clustering method of a multi-directional antenna. The ad hoc network clustering method comprises the following steps of: performing acute initialization on multi-unmanned-platform networking, and binding key information for each node after the nodes of the multi-unmanned-platform networking are started; judging whether existing network information is monitored or not by each node according to the respective key information; if so, transmitting network access request information to apply for access; if not, upgrading the node to a cluster head node, andbroadcasting a network access invitation information frame; judging to access the network by the cluster head node; performing network service maintenance, namely, entering a service process after networking of each node is completed; at the end of each communication period, adaptively updating the cluster head node in the cluster and adding a backup cluster head node; and at the end of each communication period, enabling the cluster head node to interact with each node in the cluster in sequence to finish time calibration and position calibration, and maintaining the network to enter the next communication period. According to the ad hoc network clustering method, the network utilization rate of an ad hoc network is improved while the continuous availability of the link is ensured.

The embodiment of the invention relates to the field of computers, and discloses a caching method and equipment and a storage medium. The caching method comprises the following steps: determining theflow of data sent by a client within a first time length; determining the service level of the disk according to the disk utilization rate and the flow of the data, the service level comprising a first service level and a second service level, the first service level being to write the data into the cache region, and the second service level being to discard the data; and determining to cache or discard the data according to the service level. The service level of the disk is determined through the disk utilization rate and the data flow, and the data is cached or discarded according to the determined service level, so that the situation that the data cannot be processed when the data volume is suddenly increased in a short time is avoided, a guarantee is provided for the continuous availability of the server node, and the stability of the network is further improved.

The invention relates to an online sampling method for an oil pipeline. The online sampling method comprises following steps: 1), a section of bypass pipeline is arranged on a main pipeline, and a liquid enters the bypass pipeline through a sampling probe; 2), pressure detection is performed; 3), filtering and pollution discharge are performed; 4), pressure difference detection is performed at two ends of a filter; 5), the liquid is pressurized by a sampling pump; 6), pressure detection is performed; 7), an outlet of the sampling pump is connected with a sampling loop and a jet loop, the liquid at an outlet end of the jet loop is sprayed into the main pipeline through a spray nozzle, and the liquid entering the sampling loop is subjected to follow-up processes continuously; 8), pollution is discharged; 9), online density detection is performed; 10), gas is exhausted; 11), a sample is taken and stored; 12), the residual liquid after the sample is taken is subjected to pressure detection, temperature detection and flow detection sequentially and is finally converged into the main pipeline. According to the online sampling method for the oil pipeline, reliable, real-time and continuous operation, accurate sample quantity and accurate loop flow control can be realized, and the requirements that the obtained sample is representative, the sampling process is automatic and the system control is accurate are met finally.

The invention discloses an automatic disaster-tolerant system based on a Greenplum database. The system comprises a task initiation layer, a task synchronization layer and a result analysis layer, wherein the task initiation layer queries a production data cluster, monitors data variation in the Greenplum database and judges whether data synchronization is needed or not; the task synchronization layer defines a metadata monitoring task, records metadata changes and then synchronizes changed metadata in the production data cluster into a disaster-tolerant data cluster through a pipeline; the result analysis layer calculates changes of the disaster-tolerant data cluster according to the synchronized data, compares the synchronized data of the production data cluster with the synchronized data of the disaster-tolerant data cluster, records daily synchronization and outputs an analysis result. The system has certain redundancy, high performance and high availability, can guarantee efficient running of the database, effectively avoids business performance problems caused by faults and is simpler and more reasonable in structure and wide in application range.

A method and apparatus for trickle-down transmission of data, storage medium and a terminal, the method comprising: full and incremental streams are imported in parallel, The total data stream and theincremental data stream respectively comprise at least one record row, for each record row, the record row having a timestamp for uniquely identifying the data version, a status code for identifyingthe validity of the record row, and a row key, the row key being determined according to a primary key of the record row; For a plurality of record rows with the same row key, respective timestamps and status codes of the plurality of record rows are merged according to an operation type of a record row imported from an incremental data stream among the plurality of record rows, the operation typebeing used to indicate an import mode of the record row. The scheme provided by the invention can effectively realize the data real-time synchronization between the database and the big data platformand between the big data platform and the big data platform, and ensure the continuous availability of the big data platform during the synchronization period.

The invention provides a DDoS attack judgment and flow cleaning method and device and electronic equipment, and the method comprises the steps: judging the start time of a DDoS attack; and when the DDoS attack is judged, carrying out flow distinguishing processing and flow cleaning. According to the technical scheme, the DDoS attack traffic is detected by taking the newly added session connectionnumber threshold value per second of the server and the session connection threshold value as judgment points, and when the value exceeds a set value, the point is judged as an attack starting point,and a defense strategy is triggered. Compared with a traditional threshold detection method, the detection method has the advantages that the DDoS attack starting time can be judged more accurately, the cleaning strategy is continuous and coherent, continuous availability of the server is guaranteed by controlling the connection curve, and the server is not completely discarded and newly built atthe maximum connection position.

The invention discloses a high-security Internet teaching system adopting a big data technology. The system comprises a learning resource management platform, an aided multimedia platform and a big data analysis module, wherein a signal end of the learning resource management platform is connected with an application program server, an interactive port of the application program server is connected with a database server, a signal end of the database server is connected with a database management system, the signal end of the learning resource management platform is connected with the aided multimedia platform through a wireless network, and an output end of the learning resource management platform is connected with the big data analysis module. According to the system, in the process ofusing Internet aided teaching, a teacher can store course data into a server of the online aided teaching system, a user logs into the server through the network to call the data, and teaching relevant activities, such as teaching resource publishing, course browsing and teaching content discussion, can be realized.

The invention relates to an online sampling device for an oil pipeline. A section of process pipeline is arranged on a main pipeline, an inlet end of the process pipeline is connected with a sampling probe, an outlet end of the process pipeline is connected with a nozzle, and the sampling probe and the nozzle are all connected to the main pipeline; a sampling loop pipeline is in bypass connection with the process pipeline behind sampling pumps, representative samples are taken from the sampling loop pipeline, and residual liquids finally converge to the main pipeline. By means of the online sampling device, reliable operation, real-time continuous sampling, accurate sample quantity and precise loop flow control can be realized, and the requirements for representative samples, automatic sampling process and precise system control are met finally.

This invention relates to an adaptability service connector and a connect method under the network environment. The service connector is a regulation and control device for service and connection in distribution system composed of an interaction component, service address storage a service selection part, a connection control part, an access part and a configuration part, among which, the control part controls the selecting part to select one service from services stored in the address storage to set up service connection relations and controls the access part to dispatch the service. The access part triggers execution of the service which feeds back data to the interaction part after finishing the performance to finish the interaction and configuration part can regulate the interactive part of the connector, service address in the address memory and the selecting part.

The present invention is a multi-antenna autonomous switching method for a star-shaped self-organizing network, and is characterized in that: the method comprises: Step 1. periodically broadcasting incoming network messages on network master node; Step 2: a slave node entering the network; Step 3. selecting a slave node antenna that has high communication energy with a master node antenna and strong signal to noise ratio; Step 4 Selecting a master node antenna that has high communication energy with the slave node antenna and strong signal-to-noise ratio; Step 5, through repeating step 2 to 4,determining antenna respectively for both master node and each slave node; step 6, determining a service time slot communication antenna when the master and slave node are at precise synchronizationtime slot and maintaining the network for next cycle. The method can solve performance degradation caused by dynamic changes of the star-shaped self-organizing network. The method has characteristicsof good topology adaptability and strong network reorganization ability, ensures continuous availability of a link and improves the network utilization rate of the star-shaped self-organizing network.

The invention relates to an on-line sampling device and method for oil pipelines. The on-line sampling device is provided with a section of bypass on the main pipeline, the inlet of the bypass is connected with a sampling probe, and the sampling probe is connected to the main pipeline; A sampling pump is installed on the road, and a sampling circuit and an injection circuit are connected after the sampling pump. The outlet end of the injection circuit is connected to the main pipeline through a nozzle, and the sampling circuit takes representative samples, and the remaining liquid is finally imported into the main pipeline. The invention can realize reliable operation, real-time continuous operation, accurate sample quantity and precise loop flow control, and finally meet the requirements of representative sample acquisition, automatic sampling process and precise system control.

The invention relates to the technical field of computers, and discloses a method, a device and equipment for repairing a workload cluster and a readable storage medium. The method comprises the following steps: acquiring backup data corresponding to a workload cluster, the backup data being data of normal operation of the workload cluster; detecting whether the operation state of the workload cluster is normal or not; when the operation state of the workload cluster is abnormal, determining abnormal information of the workload cluster; and performing exception repair on the exception information of the workload cluster based on the backup data. Through implementation of the method and the device, automatic restoration of the cluster abnormity is realized, manual intervention of operation and maintenance personnel is not needed, the operation and maintenance time of the cluster abnormity is reduced, and the cluster abnormity restoration efficiency is improved.

The invention discloses a micro-service dynamic updating method supporting transaction consistency, which belongs to the technical field of software maintenance and comprises the following contents: insertion of a flow agent and a dynamic updating process supporting transaction consistency are conducted, wherein a mode of inserting the flow agent is adopted to take over a user request, intercept and extract distributed transaction information in the user request, add a corresponding distributed transaction identifier and manage the distributed transaction identifier; a dynamic updating process supporting transaction consistency describes how to go from a new version to revoke an old version, and the continuous availability of the system is ensured while the target service is dynamically updated. Compared with a common deployment scheme, in the aspect of micro-service dynamic updating, the method achieves better balance in the aspects of timeliness and interference while meeting the consistency requirement, can be applied to different micro-service systems, and has higher application values.

The invention relates to the technical field of satellites, and discloses a GNSS data sending and receiving method and system, which can perform more efficient and safer data transmission in a limited-bandwidth and high-cost satellite broadcast communication mode. The method comprises the following steps: acquiring GNSS data of a plurality of epochs of a plurality of observation satellites of a navigation frequency point, wherein the GNSS data comprises original observation data or non-difference correction data; determining a reference satellite and a reference epoch from the GNSS data; carrying out inter-satellite difference calculation on the GNSS data of each observation satellite and the GNSS data of the reference satellite to obtain corresponding first difference data; performing time difference calculation on the first difference data of each epoch and the first difference data of the reference epoch to obtain corresponding second difference data; and sending the second differential data and the corresponding reference satellite and reference epoch to the server.