31results about How to "Improve system availability" patented technology

This invention relates generally to database servers and computer systems and, more particularly, describes the mechanism to run transaction operations originating from a primary server used to replicate data in parallel in a secondary server. Especially the invention relates to running concurrent or parallel operations in a secondary server for redundancy, recovery and propagated transactions. This invention describes how parallel operation in a secondary server improves performance and availability and how it maintains transaction order and output congruent with the primary server where transaction operations are originated.

A method and apparatus for call quality troubleshooting and mitigation may include polling network communication path elements to determine network performance data, receiving a call quality alert from at least one communication unit, the call quality alert indicating degraded call quality of a call session, and analyzing the network performance data from the network communication path elements and the at least one communication unit to determine a cause of the alert and at least one action to mitigate the cause of the alert. The apparatus for call quality troubleshooting and mitigation may include a memory for storing data from network communication path elements and data from at least one communication unit, and a processor operating to poll network communication path elements to determine network performance data, to store a call quality alert received from at least one communication unit in the memory, and to the network performance data from the network communication path elements and the at least one communication unit to determine a cause of the alert and at least one action to mitigate the cause of the alert. The method and apparatus may further include correlating the data from the network communication path elements with the data from the at least one communication unit and invoking a real-time network topology investigation module to determine the cause of the call quality alert.

Data back-up and recovery methods for DRAM SSDs and other high performance disks are provided. During operation, write events to the DRAM SSD are asynchronously backed-up onto a back-up HDD storage disk from an in-memory buffer. Should a DRAM SSD failure occur, the system can continue to operate, albeit at a lower performance, using the back-up HDD storage disk. Should the main power fail, data remaining in the in-memory buffer is flushed to the back-up HDD storage disk and writing events that did not make it to the in-memory buffer due to insufficient space are incrementally backed-up from the DRAM SSD to the secondary storage. Once power returns from the main power, data from the back-up storage disk and the secondary storage are transferred to the DRAM SSD.

The invention relates to a process for preparing carbon forming powder, in particular to a new process for preparing carbon forming powder by adopting an air swept type ball milling system. In the invention, equipment mainly comprises a raw material bin, an air swept type ball mill, a high-efficiency rotor type grader, a gas tank pulse bag type dust collector, a main exhaust fan and a finished powder bin. In the main work process of the invention, a raw material is fed and added to the air swept type ball mill through a feeder and is subjected to rough and fine powder grading through the high-efficiency rotor type grader, rough particles are returned to the ball mill for pulverizing once again, and fine particles enter the gas tank pulse bag type dust collector for collection. The invention has the technological performance advantages of high systemic force supply, low power consumption for unit product, high finished powder purity, and good uniformity and stability, and completely eliminates the phenomena of air leakage and ash flying in the traditional process because of the operation in a negative pressure state. The process is not only suitable for the optimization and technological improvement on the traditional process in the production process of the carbon forming powder, but also suitable for new projects of a carbon forming powder preparation system.

The invention relates to a closed grinding classifying system, wherein it is formed by cyclone device, grid ball grinder. The invention uses single cyclone device whose inlet is connected to the slurry pump adjusted by the frequency changer; the inlet of slurry pump is connected to the slurry groove whose inlet is connected to the mine outlet of grinder; the bottom outlet of cyclone device via groove is connected to the mine inlet of ball grinder, while its overflow outlet is connected to next step. The invention can improve efficiency.

The invention provides a method for realizing the cascade connection of a high availability switcher. The method taking a matrix switcher as the core realizes the transmission quality of a system signal through a switching module and a standard switcher by the point-to-point access between a star topology mixing cascade connection and a matrix switcher as well as the star topology mixing cascade connection and the standard switcher. The steps of the realization of the method is as follows: a matrix switcher is taken as the core device, one end of the core device is connected with a keyboard, a mouse and a display through the switching module for the system monitor and control, the other end of the core device is connected with the standard switcher through the switching module, the standard switcher is also connected with computer equipment to be switched to support the switch of 512 computer equipment. Compared with the method of the standard switcher to realize the extension of the switcher through the series cascade connection, the method of the invention has the characteristics of the higher usability of the system and the better transmission quality of the signal.

The embodiment of the invention provides a data querying method. The method comprises the following steps of: obtaining a query request from a query system, wherein the query request is used for requesting to query data in a database system; obtaining a cache setting label corresponding to the query request, wherein the cache setting label comprises cache invalidation time and an automatic invalidation label; determining whether cache data corresponding to the query request are invalid or not according to the cache invalidation time; and if the cache data are invalid, querying data in the database system and returning result data to the query system according to a query result of querying the data in the database system and the state of the automatic invalidation label. The invention alsoprovides a querying device corresponding to the querying method. Therefore, the data can be queried more flexibly and efficiently.

The invention discloses a water conservancy and hydropower engineering multi-source data fusion method based on BIM+GIS. The method comprises the steps of S1, exporting a fused model in a native BIM platform for lightweight processing; S2, fusing two types of multi-source model data; and S3, acquiring, processing and fusing oblique photography data in GIS software. The invention provides a technical scheme for processing, importing and keeping the model light weight, high quality and high system availability based on the native BIM platform model, and solves the problems that the BIM visualization platform model is large in volume and slow in platform loading; and the technical scheme of data acquisition, fusion and application of oblique photography data from field surveying and mapping, data processing and data fusion is verified.

An approach for providing network security is disclosed. The system includes a first set of routing devices (e.g., routers, routing switches, etc.) operating redundantly within an autonomous system. The system also includes a second set of routing devices that are configured for redundant operation within the autonomous system and to communicate with another autonomous system. The sets of routing devices provide a communication path between the autonomous systems for transport of untrusted packets and trusted packets. Further, the system includes a security node (i.e., weighstation) configured to communicate with the sets of routing devices and to only receive the untrusted packets, wherein the untrusted packets are selectively forwarded to the other autonomous system.

The invention discloses a method and system for managing configuration information, and relates to the technical field of computers. A specific embodiment of the method comprises the steps of sendinga change notification to a client where an application is located after configuration information of the application is changed, wherein the client sends out a configuration information synchronization request after receiving the change notification; and receiving the configuration information synchronization request, and returning the changed configuration information to the client. According tothe embodiment, the real-time perception of the application program on the configuration information change can be realized in a mode of pushing the data by the server.

The invention provides an evaluation and optimization method for an XACML (Extensible Access Control Markup Language) security strategy. The method comprises the following steps of: eliminating a redundancy rule; establishing a judgment result buffer pool and an XACML security strategy buffer pool; and dynamically changing the position of an XACML security strategy/rule. Specific to the performance defects and functional defects along with increase in the complexity of the strategy scale and strategy semantics in an existing XACML standard, the XACML security strategy evaluation and optimization method based on strategy redundancy elimination, caching and reordering is provided. Through adoption of the method, relevant optimum processing methods such as strategy analysis, rule matching and judgment response can be provided for performing fine-grained access control on resources; the efficiency during solving of the problems of strategy information retrieval, multi-strategy matching and the like with an XACML security strategy evaluation engine is increased effectively; and the system availability is enhanced. Moreover, the method can adapt to various strategy merging algorithms, and has high flexibility and availability.

This invention provides a method for building a multi-energy trading and management platform based on blockchain. Based on the attributes of different functions to be implemented in the energy trading and management platform, the platform is built by combining different advantages of blockchain technology and database technology. Deploy the functions of issuing transactions, matching transactions, and querying transaction information in Ethereum smart contract, store user registration information in a traditional database, and establish a mapping relationship between real information and lengthy blockchain accounts to make information of transactions on the market be displayed with real names. This method not only meets the needs of energy distributed transactions but also avoids the problem of incompatible string type data in Ethereum smart contracts which affects system performance. At the same time, the transaction data displayed with real names ensures the openness and legality of the transaction system. It has a strong reference significance for the development of new models of distributed energy trading.

The invention provides a fax sending system and method. A judging module is used for dispatching a fax receiving number in a first database and respectively matching the fax receiving number with a preset fax number in a white list and a non fax receiving number in a blacklist; when the fax receiving number is matched with the preset fax number in the white list, a fax sending dispatching module is used for dispatching fax file information comprising the fax receiving number in the first database, converting fax file contents in the fax file information into fax file contents in a fax format, and sending the fax file contents in the fax format to a sending server corresponding to an operator corresponding to the preset fax number matched with the fax receiving number, and the corresponding sending server is used for sending the fax file contents to the fax receiving number through an operator circuit connected with the corresponding sending server; and when the fax receiving number is matched with the non fax receiving number in the blacklist, the flow is terminated. According to the fax sending system and method provided by the invention, the sending success rate is high.

The invention relates to the technical field of distributed storage, and provides a limited decentralized distributed hash table resource searching method in a CNFS protocol, which comprises the following steps: step 100, K node identifiers closest to a target are inquired and returned by an inquiring user node by taking a node identifier as a parameter to obtain K nodes closest to the target node; and step 200, the query user node queries by taking the resource identifier as a parameter, queries and returns the searched data or search failure information. According to the invention, the nodepositioning and resource query speed and the system availability can be improved.

The invention relates to the technical field of computers, in particular to a data query method and device based on a domain-specific language, which are used for improving the availability of a system while ensuring the data query efficiency, and the method comprises the following steps of: analyzing a received data query statement by adopting a set basic analyzer to generate a corresponding abstract syntax tree; and based on the abstract syntax tree, obtaining each analysis result corresponding to each rule node, generating a corresponding elastic search field specific language, and then receiving and sending a data query result returned by an elastic search engine. Therefore, conversion between the structured query language statement and the specific language in the elastic search field is realized by following the structured query language grammar, so that developers can quickly realize data query of an elastic search engine, and the development efficiency is greatly improved, so that the system availability is improved, and meanwhile, the data query efficiency is ensured.

The invention discloses a consensus method and a consensus system for redundant storage resources based on a computing storage separation framework, which effectively improve the availability of a cluster system, and particularly improve the utilization rate of the redundant storage resources of a Raft consensus cluster under the computing storage separation framework under the condition that available computing resources are few. A data replication technology based on a common consensus technology excessively depends on redundant computing resources, and the utilization rates of computing and storing the two redundant resources are lack of balance. According to the method, the log copying and Leader node election processes in the consensus process are completed by means of the redundant storage resources, so that the system availability of the cluster is ensured by means of the redundant storage resources when available computing resources are insufficient. When the method is applied to a cloud computing environment, the result shows that the system availability of the cluster is effectively improved, and meanwhile, the security of data is ensured.

An ion generation apparatus used in an ion implanter includes a source head for generating ions and a source chamber with a manipulator for extracting only cations from the generated ions. A liner comprising a plurality of sections is installed at inner faces of the source chamber. An existing liner can be periodically replaced with a new liner to shorten a time required for cleaning the inner faces of the source chamber.

The invention relates to a fault ride-through method and device for a photovoltaic collection system, and a computer storage medium, and the method comprises the steps: locking a DC boost converter when a DC monopole grounding fault is detected, and controlling MPPT zero-power operation; when it is detected that the direct-current monopole grounding fault is removed, unlocking the direct-current boost converter, MPPT working in an output end direct-current voltage control mode, and the direct-current boost converter being charged; and after the direct-current boost converter is charged to a rated value, MPPT recovering power transmission. After a single-pole grounding fault occurs, in order to avoid shutdown of the whole system, the direct-current boost converter is directly locked, MPPT zero-power operation is carried out, positive and negative power efficiency is balanced, stable operation of the system is ensured, and fault ride-through is realized; locking shutdown of the whole system is avoided, the power interruption time is shortened, and the availability of the system is improved.

The invention relates to a method for preventing safety-critical activation of a clutch in a hybrid module of a motor vehicle power train, the hybrid module being effective between an internal combustion engine and a transmission and comprising an electric drive, a clutch and a freewheel, and the clutch being used to start the internal combustion engine by transmitting torque, which is supplied by the electric drive or the power train, as the clutch frictionally engages with the electric drive or the power train for purely electric driving. In a method in which the error tolerances of the entire system can be taken into consideration, a safety gap of the disconnected clutch that has be be maintained is adjusted in accordance with the ambient conditions around the motor vehicle and/or the boundary conditions of the vehicle.