10 results about "Metadata server" patented technology

The embodiment of the application provides a data processing method, system, device, medium and product, and belongs to the field of data processing. The method comprises the following steps: a metadata server creates a user file corresponding to a file name and a plurality of internal files associated with the user file and having a set writing sequence according to a file creation request sent by a writing client. After the metadata server receives a first writing request corresponding to the user file sent by the writing client, the metadata server sends data block allocated to each of the plurality of internal files and data node information corresponding to the data block to the writing client. In this way, after the writing client successfully writes first data to be written into a first data node corresponding to a first data block in a first internal file, if the metadata server stops serving at this time, the writing client can continue to write second data to be written into a second data node corresponding to a second data block in a second internal file, thereby realizing high availability of file writing.

A method and system for identifying IP addresses of an edge device, obtaining associated IP metadata, and storing both the IP address and IP metadata locally is disclosed. The method comprises receiving, by a server, a network message from an edge device that includes an Internet Protocol (IP) address of the edge device, wherein the edge device is not privy to its own IP address. The server extracts the IP address from the network message and obtains associated IP metadata from an IP metadata server. The IP metadata is then transmitted from the server to the edge device for local storage, after which the server deletes the IP metadata to ensure it is not persistently accessible to the server while remaining persistently accessible to the edge device. The edge device utilizes the locally stored IP metadata in executing predefined functionality. The invention also encompasses a system comprising a server, metadata server, and edge device configured to perform these operations. Both the method and system aspects enable efficient IP metadata management while addressing privacy concerns and reducing server-side storage requirements through distributed edge-based storage architecture.

The application provides a method, system, device and storage medium for quickly reading metadata, the method comprising: in response to receiving a metadata request for accessing a first file by a service, a metadata server only reading metadata information of the first file; responding to the metadata request issued by a client according to the read metadata information of the first file; asynchronously issuing the metadata request to a metadata disk and batch loading metadata information of other files in a directory where the first file is located; and in response to again receiving metadata information of a target file in the directory where the first file is located, directly reading metadata information of the target file from the metadata disk. The application improves the metadata cache reading performance of a distributed file storage system in a sequential reading scenario and a random reading scenario. The stored metadata cache space is more efficiently utilized, and the cache hit rate is improved.

This system provides advanced vital sign management services for the elderly, along with nutritional and food management, to improve their health, enhance their quality of life, and provide a planned and continuous nutritional management system necessary for extending their healthy lifespan. [Solution] The nutrition management system of this invention comprises a data server 22 that stores health status information D3, including vital signs and other health information of elderly people, acquired at elderly support facilities in shopping districts, and a communication unit 24 that communicates with a terminal 40 connected to the data server 22 via a public communication line 30. The data server 22 stores nutrition management information and / or food management information based on the health status information D3 and information from elderly people obtained via the public communication line. When an elderly person sends a request to the communication unit 24 for information to be provided in order to perform nutrition management, the data server 22 performs a process to provide the information to the terminal 40 from the information stored in the data server 22.

This application provides a distributed data reading method, apparatus, and server, relating to the field of data processing. The method includes: a server retrieving multiple file sets from a disk. Each file set may include at least one file. Each file includes metadata for at least one document. The server determines the number of files allocated in each partition based on the quotient of the total number of files in each file set and the number of parallel processes. The server may allocate the files in the file sets to several partitions of parallel processes. Each partition includes at least several allocated files. After determining the number of partitions for the parallel processes, the server may allocate one partition to each parallel process. The parallel process may then read the document corresponding to the metadata in the partition after retrieving it. This method improves data reading efficiency.

This disclosure relates to the field of file system technology, specifically to load balancing methods, electronic devices, and storage media. The method is applied to MDS nodes in a metadata server (MDS) cluster. It includes receiving and parsing a directory creation request to obtain directory information of the directory to be created; determining the directory depth of the directory to be created based on its path information; determining whether static binding is needed based on the directory depth and a preset static binding directory depth; when static binding is needed, querying whether a record of a target MDS node exists, the target MDS node being determined based on the load information of each MDS node in the MDS cluster; when no record of a target MDS node exists, selecting a migration MDS node from the MDS cluster; and binding the directory to be created to the migration MDS node. This method achieves load balancing while avoiding the long waiting times caused by frequent migrations.

The application provides a data reading method and system for a mirror copy of a distributed parallel file system. When a primary copy fails, the application first intercepts errors to avoid direct business interruption, converts the failure signal into a trigger condition for automatic recovery, and then interacts with a metadata server to complete the degradation of the failed copy and the promotion of the healthy copy, update the global metadata view of the file, avoid subsequent requests from continuously accessing the failed node, seamlessly redirect the read request to the healthy copy to complete data reading, the entire process is not perceived by the upper layer application, millisecond-level self-healing of the failure is achieved, the access capability of the redundant copy is released, and the business interruption problem caused by the single-point failure of the primary copy is solved.

This application provides a metadata storage method, apparatus, computer device, and storage medium. The method includes: storing any metadata of a file system in a metadata server, wherein the metadata server is used to store metadata in the file system based on an unordered index structure; determining a second node in the hierarchical directory tree associated with the first node based on the location information of the first node corresponding to the metadata in the hierarchical directory tree, wherein the association between the second node and the first node includes the second node being a child node or a sibling node of the first node; obtaining the storage location information of the associated metadata corresponding to the second node in the metadata server; and linking the storage location information of the associated metadata corresponding to the second node in the metadata server within the metadata based on the association relationship between the first node and the second node.

Techniques for dynamic application packaging and execution are described herein. In various embodiments, one or more servers, which include one or more processors and non-transitory memory, duplicate a component in an application to generate duplicated components within the application. The server(s) then package the application to include diversified versions of the duplicated components and obtaining metadata describing the diversified versions. The server(s) also receive from a client device a request for execution of a version of the application, compose a unique manifest for the client device in response to the request, where the unique manifest identifies the version of the application and a version of the component among the diversified versions. The server(s) then cause execution of the version of the application at the client device, including causing execution of the version of the component at the client device according to the unique manifest.

The DFS-oriented global aggregation namespace cross-computing node persistent cache method comprises the following steps: all computing nodes can access any file stored in a host computing node, a remote computing node or a data storage server on demand; the computing nodes copy or migrate relevant files from the data storage server to the corresponding local persistent cache devices of the multiple computing nodes according to the cache type requirements by using the striping technology in reverse according to the file layout information given by the metadata server and the cache pre-fetching strategy preset by the strategy engine according to the task requirements; when the data cached in the multiple computing nodes meets the preset condition, the relevant computing node end data is replaced or expelled to the data storage server end by using the cache replacement or eviction strategy preset by the strategy engine; and the relevant operation is completed in cooperation according to whether the relevant files to be operated have been cached in the local persistent storage of the corresponding computing nodes.