2565results about How to "Improve access efficiency" patented technology

The invention discloses a data access method, system and device. The data access method includes: determining a data storage command during data storage; determining a block chain corresponding to an identity identifier and a secret key pair according to the identity identifier arranged in the data storage command; storing data to be stored in the block chain according to the secrete key pair; determining a data query command during data query; determining a block chain corresponding to an identity identifier and a private key according to the identity identifier corresponding to the data query command; and decrypting data in the block chain according to the private key, and querying the data. It is thus clear that the data access method can access data corresponding to the identity identifier without accessing a plurality of databases, can only access the block chain corresponding to the identity identifier, can perform data storage through the secrete key, can ensure the security of the data, can simplify the complexity of operations, and can improve the efficiency of data access.

The object of the present invention is to improve an access efficiency in a distributed environment. When a user “foo” access a file “file_1a” stored in a storage node SN1 under the control of a control node CN1 from a client CLN3 via a control node CN3 as shown by the solid lien arrow in the figure, a record of the access is accumulated in an access history of the control node CN1. If the control node CN1 refers to the access history and detects the frequent accesses from the control node CN3, it replicates or migrates the file “file_1a” to a storage node SN3 controlled by the control node CN3 as shown by the bold line arrow. The replication is performed if another device has accessed the file. Otherwise the migration is performed.

The invention discloses a method for distributing metadata of a distributed type file system. The method uses a catalogue of the file system as a basic unit of Hash, adopts an extensible Hash method to distribute the metadata to each metadata server to ensure that clients can position the position of the metadata; the metadata has high accessing efficiency, even distribution and balanced load; meanwhile, the method maintains storage locality of the catalogue, realizes conveniently prefetching, and improves the accessing efficiency. A unique and unchanged identifier is given to the catalogue to avoid metadata migration caused by the path name of Hash and improve the system performance; participation or exit of the metadata server cannot cause redistribution of mass metadata so as to furthest reduce the metadata migration and ensure high expandability.

The invention discloses a resource determining method for a physical random access channel. The method comprises the step of configuring a plurality of physical random access channel resources for each piece of user equipment (UE), and the physical random access channel resources include at least one of the following resources: time domain resource, frequency domain resource, code domain resource and space domain resource, wherein the time domain resource is emission sub-frame configuration of a physical random access channel, the frequency domain resource is emission band configuration of the physical random access channel, the code domain resource emission sequence or orthogonal mask configuration of the random access channel, and the space domain resource is space access location configuration of the random access channel. The invention further discloses a resource determining device for a physic al random access channel. The PRACH resource reusing capability in a frequency division duplex system is improved, the PRACH collision probability is reduced, and the terminal access efficiency and the system throughput are improved.

The invention relates to the technical field of multi-source data processing, in particular to a cloud platform for achieving distributed isomerous data sharing and a data sharing method thereof. A system is composed of a sharing data cloud application layer, a cloud sharing data service layer, a system bridging layer and a service system layer. The three-layer data sharing and accessing control technology is adopted, and a data owner carries out setting on the synchronization mode and the sharing mode of sharing data by using adapter software running in a front-end processor and data resource management software running in a cloud end respectively, and carries out secondary confirmation on switching of the sharing data by setting certain operation procedures. Cloud end backup is carried out on the shared data through format transformation. The cloud platform for achieving the distributed isomerous data sharing and the data sharing method thereof solve the sharing problem of isomerous data, and can be applied to the sharing processing of multi-source isomerous data.

The invention provides a management method and a management system of database connection. The method and the system aim at solving the problem of management of multiple connection tank resources. The method comprises the steps that a database access request sent by a client side is received; an operation type and a keyword connected with a target are obtained from content of the request; a connection tank object matched with the keyword connected with the target is queried from a connection tank management table of a memory; the connection resource is obtained from the queried connection tank object; a corresponding database is connected according to the connection resource; connection is recorded to a database connection management table; corresponding database operation is executed according to the operation type; an operation result is returned; a connection resource management table is detected; and the connection is recovered according to detection. According to the method and the system, thousands of connection tank resources can be managed uniformly, and corresponding database connection is uniformly dispatched and controlled by a platform, so that the access efficiency is improved significantly compared with mutually independent management of connection tanks in the prior art.

The invention discloses an RDMA (Remote Direct Memory Access)-based distributed memory file system. In an initialization phase of the distributed memory file system, memory used by a cluster for filestorage is uniformly divided, and is registered to network cards to support direct memory access of remote-end nodes, and then a distributed shared memory pool is constructed; on the distributed memory sharing pool, file indexing and file data block indexing are respectively carried out through two-level hash indexing to provide query services for the file system; and a request of a client is processed through a self-identifying remote-procedure-call (RPC) method, and a processing result is returned. The system has the following advantages: reducing data copying of files in reading/writing, reducing response delay, and improving overall efficiency of file access in program software.

The disclosure relates to a data access method and apparatus and system, and belongs to the field of communication. The data access method comprises: receiving a data access request sent by a user device; according to the data access request, sending a cache access request to a cache server; receiving data information sent by the cache server, wherein the data information comprises first target data; detecting whether a storage time of the first target data is between a first time threshold and a second time threshold or not; if the first target data is between the first time threshold and the second time threshold, according to the data access request, acquiring second target data in a database; and sending the second target data to the cache server, wherein the cache server is for adopting the first target data stored in the second target data update cache server. According to the data access method provided by the invention, problems of relatively low efficiency and relatively long delay of the data access are solved; effects of improving the data access efficiency and reducing the access delay are realized; and the data access method is used for for the access of page data.

A parallel data processing method based on multiple graphic processing units (GPUs) is provided, including: creating, in a central processing unit (CPU), a plurality of worker threads for controlling a plurality of worker groups respectively, the worker groups including one or more GPUs; binding each worker thread to a corresponding GPU; loading a plurality of batches of training data from a nonvolatile memory to GPU video memories in the plurality of worker groups; and controlling the plurality of GPUs to perform data processing in parallel through the worker threads. The method can enhance efficiency of multi-GPU parallel data processing. In addition, a parallel data processing apparatus is further provided.

A file system created on storage medium is composed of a data region for storing actual file data and a meta-data region for storing mark data used for mapping between physical data and logical data. It features that the unidirectional link table of the physical positions for the data of each actual file in the data region is stored in the meta-data region for managing the actual files according to the index address of each unidirectional link table. Its file managing method includes reading data from metal-data region to form a database file, and accessing the database file to get the index address of unidirectional link table for managing the actual files.

The invention discloses a method and device for acquiring page resources. The method comprises the following steps that: a browser client transmits a request for acquiring a basic document of a page to a webpage server to acquire the basic document of the page; the browser client analyzes the basic document of the page, constructs a request for merging webpage resources according to merge statement content in the analyzed basic document of the page, and transits the request of merging the webpage resources to a proxy server; and the proxy server analyzes the request of merging the webpage resources, transmits a request of acquiring the webpage resources to a resource server for storing webpage resources to acquire contents of a plurality of webpage resources and returns the plurality of acquired webpage resources to the browser client. In the invention, merged webpage resources are constructed by using the merge statement content, a primary request is merged and transmitted, and all contents are requested in parallel through the proxy server and are packed, compressed and then returned. Since flux and request frequency are reduced, access speed of the page is increased.

The embodiment of the invention discloses a page access method, which comprises the following steps of: judging whether a target page to be accessed is a historical page, if the target page to be accessed is the historical page, acquiring a page resource and page data which correspond to the historical page and are stored during finishing of the access to the historical page, and accessing the historical page according to the acquired page resource and the acquired page data of the historical page. The embodiment of the invention also discloses a page access device. By the technical scheme of the embodiment of the invention, the historical page can be accessed under the condition that the page state during finishing of the access to the historical page is retained, so that the concurrency pressure of a server is reduced, the access operation time is shortened, and the overall page access efficiency is improved.

The invention provides an optimized method for accessing lots of small files for Hadoop, and aims at providing a small file merging, indexing and querying method applied to the Hadoop. The method mainly solves the problem of low access efficiency of small files in the Hadoop. The invention provides a three-layer Hadoop small file access processing architecture; and the three layers are respectively a user interface layer, a service logic layer and a data storage layer. According to the method, a merging mapping technology of the small files at a preprocessor side and a fast indexing technology of lots of small files are used.

The present invention relates to a passive optical network, which inexpensively improves the spectral efficiency of an access network and is capable of increasing the number of subscribers per channel by using WDM in combination with Time Division Multiplexing (TDM) or SubCarrier Multiple Access (SCMA) to expand a conventional WDM passive optical network. The passive optical network includes light providing means provided in a central office to provide broadband incoherent light; a multiplexer connected to the central office via an optical fiber to divide the light transmitted from the light providing means according to wavelengths and to multiplex upstream signals; a plurality of splitters to branch divided lights and to combine the upstream optical signals; and a plurality of subscribers connected to the splitters, the subscribers including wavelength-locked Fabry-Perot laser diodes capable of performing direct and analog modulation, and means for directly modulating lights of the Fabry-Perot laser diodes and transmitting modulated lights to the subscribers using time division multiplexing.

The invention discloses a database access platform and access method, which solves problems of high requirements on technician, impalpable code and safety of traditional database operation mode. The platform mainly comprises an application access interface for supplying setting of database configuration information and feeding back database operation result; a data source acquisition unit for connecting corresponding database according to the database names in the configuration information; a database single table operation unit for calling corresponding table structure information according to the access parameters in the configuration information and executing corresponding SQL operation in combination with generation of SQL sentence; a database complex operation unit for calling corresponding SQL template according to the access parameter in the configuration information and executing corresponding SQL operation in combination with generation of SQL sentence. Because of shielding direct SQL operation, the platform facilitates developers unnecessary to concern detailed SQL sentence spelling and database operation and greatly reduces the technical requirements on developers.

The invention provides a localization mirror image method and a system of the mirror image method which achieve a telefile system with a local disk file system as a lasting caching space on client computing equipment in the network environment. By visiting a 'localization mirror image client-side system' applied on the client computing equipment, the telefile system is visited in a transparent mode. Part of files of the telefile system and part of data of the files are cached lastingly by the 'localization mirror image client-side system' through a 'local disk file system', and the 'localization mirror image client-side system' is responsible for maintaining the consistency of the local lasting caching telefile system. According to the localization mirror image method and the system of the mirror image method, the grain size is adopted as the smallest unit to achieve uploading and downloading of files of the local file system and telefile system, to achieve read-write operation of the files in local lasting caching, and to support lasting caching of part piece data of the files. By means of the localization mirror image method and the system of the mirror image method, visiting efficiency of a 'client application program' on the telefile system can be effectively improved so as to improve the client experience, and network flow is greatly saved.

The invention discloses a self-service express sending and taking device. The self-service express sending and taking device comprises an external express storing and taking cabinet, a small mechanical arm, a rectangular coordinate mechanical arms, a conveying device, storage racks and a control system, wherein the external express storing and taking cabinet is used for inputting information and is provided with the control system, the small mechanical arm is capable of stretching and shrinking, the rectangular coordinate mechanical arms are capable of sliding in directions X, Y and Z and revolving in the direction Z. Packages are clamped and conveyed from the storage racks by virtue of the control of the control system and the cooperation movement of the rectangular coordinate mechanical arms, the small mechanical arm and the conveying device, thereby completing the fetching process or the reverse storing process of the packages. According to the self-service express sending and taking device, by combining multi-storage rack classification-type storage with the different rectangular coordinate mechanical arms for storing and taking the expresses, the taking efficiency is greatly improved, the labor cost is lowered, and the storing and the taking of large-inventory expresses are realized; furthermore, by virtue of the cooperation of the control system, the error rates of storing and taking of the expresses are greatly decreased, and the expresses can be conveniently and rapidly taken.

The invention discloses a secure sharing method for cloud computing resources, and the method comprises: a user sends a resource access request to a cloud computing service provider server, wherein the resource access request carries relevant information of resources to be accessed; according to the relevant information of resources to be accessed, obtaining the information of the service provider server to which the resources to be accessed belong by the computing service provider server; sending an authentication request to the service provider server to which the resources to be accessed belong, wherein the authentication request carries user identification information; according to the user identification information, carrying out identity authentication on the user by the service provider server; after the authentication is qualified, sending resource access control information to the user or the cloud computing service provider server; approving the resource access control information by the cloud computing service provider server; and after the authentication is qualified, providing the resources to be accessed to the user. The invention also discloses a secure sharing device for the cloud computing resources. According to the invention, the shared resource access efficiency and safety are improved.

The invention belongs to the technical field characterized by a protocol, and discloses a cancellation-supported outsourcing verifiable multi-authorization center access control method, and a cloud server. The method comprises the following steps: system initialization, including the initialization of a global authentication center and other authorization centers; allocating an attribute set for auser by the authorization centers, and generating a secret key needed by decryption for the user; encrypting a file by a data owner, wherein the encryption process comprises outsourcing encryption, the verification of an outsourcing result and the final encryption of the data owner; issuing a file access request to a cloud service provider by the user, wherein the process includes cloud service provider outsourcing decryption, the verification of the outsourcing result, and the final decryption of the user; and cancelling some users or some attributes in a system. The cancellation-supported outsourcing verifiable multi-authorization center access control method provided by the invention has the advantages of being high in system access efficiency, low in computation overhead, capable of supporting dynamic user authority management and the like, and can be used for guaranteeing the privacy data safety of the user in cloud storage, reducing the computation overhead of the user and dynamically managing the authority of the user in the system.

The invention discloses a 3D automatic modeling and scheduling rendering method for an integrated pipe network, and relates to the technical field of 3D model building. The method comprises the following steps: data reading; layer creating; cutting scheduling; automatic pipeline modeling; automatic pipe point modeling; and automatic pipe network building. The technical problems, such as 2D-3D integrated management based on underground pipe network data in geographic information, spatial data organizing and rendering, and automatic 3D pipe network building according to 2D data, can be solved effectively. The access efficiency to pipe network information in a 3D scene is improved. The level of unified display, management and analysis of multiple underground pipe network systems having different attributes is improved. An important basis is provided for the acquisition and construction scheme of underground pipe network spatial information in urban construction, especially in smart city building in the future. The rapid development of urban construction leads to large-scale development and utilization of urban underground space resources.

The present invention provides a virtual machine system and a method for switching hardware devices thereof. In the virtual machine system, the hardware devices are classified into all-time sharing devices, time division switching devices and all-time exclusive devices based on using fashions. For the time division switching devices, the method for switching hardware devices is adopted, comprising steps of: upon system switching, sending a corresponding switching signal to a device model (DM) module corresponding to a foreground Guest OS and a DM module corresponding to a background Guest OS; the DM module corresponding to the foreground Guest OS releasing the hardware devices from its device space; the DM module corresponding to the background Guest OS adding the hardware devices released by the DM module corresponding to the foreground Guest OS to its device space. It is possible to implement switching of hardware devices among different Guest OSs by the system and method of the invention.