30 results about "Data Access in Real Time" patented technology

The embodiment of the invention provides a distributed database system, which comprises storage nodes, an access control device and an unloading device, wherein the access control device is used for receiving access requests, extracting record identifiers from the access requests, searching for the storage nodes corresponding to the record identifiers from a storage comparison table, updating theaccessing times of data records with the record identifiers, acquiring the corresponding data records from the storage nodes according to the record identifiers, and returning the acquired data records; and the unloading device is used for determining the accessing times according to the accessing times of each data record corresponding to the storage nodes in the storage comparison table, and when determining the storage nodes are overloaded according to the accessing times of the storage nodes by using a preset pressure algorithm, selecting the data records from the plurality of data records of the storage nodes according to a preset unloading strategy, unloading the selected data records into the other storage nodes which are not overloaded, and updating the storage comparison table. The invention also provides a data accessing method. The embodiment of the invention can satisfy the needs of real-time data accessing operation.

A globally distributed virtual cache is configured to provide storage resources for users around the globe. A user of the virtual cache uses a computing device to access data that is stored in storage centers included within the virtual cache. Those storage centers may be surface-based, atmosphere-based, or space-based. When the user accesses the same data repeatedly, the virtual cache migrates that data to a storage center that is closer to the user, thereby reducing latencies associated with accessing that data. When the user attempts to communicate with another user also coupled to the virtual cache, the virtual cache buffers data that is exchanged between those users to facilitate real-time or near real-time communication between those users.

The invention discloses an electric system real-time data processing method. The method includes the steps of conducting classification on real-time data in an electric system according to a plurality of preset topic types, generating data files corresponding to the plurality of topic types according to the classified real-time data, storing the data files, receiving a data access request sent by a data access request end, and returning the data files corresponding to the topic types to the data access request end. According to the method, when a real-time data service access demand is generated inside the electric system, no data access interface needs to be specially opened, the access burden of an electric system database is greatly lightened, and the stability of electric system operation is enhanced. According to the electric system real-time data processing method, the supporting capacity of the electric system for real-time data access is greatly improved, meanwhile, the electric system real-time data processing method is easy to achieve, and the cost of system development is reduced.

The invention discloses a large-grid distributed real-time database system and a data management method thereof. The system comprises a wide-area distributed real-time database storage system (1), a globally unique identifier analysis and service positioning system (2), a sub-system internal real-time data access system (3) and a distributed service agent (4), wherein the wide-area distributed real-time database storage system is used for storing real-time data in a wide-area distributed environment and efficiently indexing the real-time data by a globally unique identifier; the globally unique identifier analysis and service positioning system is used for analyzing the globally unique identifier and positioning a logical space in which the real-time data is accommodated and a corresponding service agent by using the globally unique identifier; the sub-system internal real-time data access system provides service for the network access of the real-time data in a sub-system on the basis of the wide-area distributed real-time database storage system; and the distributed service agent is connected with the globally unique identifier analysis and service positioning system and the sub-system internal real-time data access system and provides the service for cross-area and cross-system sharing and access of the real-time data. By the invention, the sharing and management of the mass real-time data in the wide-area distributed network environment can be realized.