Abstract: Embodiments of the present disclosure relate to a caching method, device, and computer program product for an edge server. The method includes acquiring a historical distribution of a set of variables associated with a network environment of the edge server, and generating one or more time series of the set of variables based on the historical distribution. The method further includes determining a caching strategy associated with the edge server based on the one or more time series of the set of variables. With the solution of the present disclosure, in an edge computing scenario, unnecessary overhead caused by ineffective caching can be reduced while ensuring smooth user experience.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for storing and accessing data. A method for storing data includes: dividing, in response to receiving a request for storing data from a client, the data into a plurality of data blocks; storing the plurality of data blocks in a plurality of servers respectively; generating metadata of the data to record corresponding addresses for storing the plurality of data blocks in the plurality of servers; and storing the generated metadata in a metadata repository. The embodiments of the present disclosure can effectively improve data transmission efficiency, data availability, and data security in a cloud storage system.

Abstract: Provided are Enterococcus lactis, a drug for preventing or treating tumor, and use thereof, relating to the technical field of biomedicines. Novel Enterococcus lactis is separated and chosen, and the Enterococcus lactis has an important influence on the effect of tumor immunotherapy for cancer patients. Gut microorganisms and immune cells can interact with each other to jointly regulate the human immune system. The provided Enterococcus lactis can induce the differentiation and maturation of iDC (immature DC) cells, and mature DC can effectively activate T cells and increase the infiltration of tumor infiltrating lymphocytes having anti-tumor activity, thereby killing tumor cells. In addition, the provided Enterococcus lactis can induce the differentiation of M0 type macrophages into M1 or M2 type cells.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for data storage. The method includes determining, based on attribute information of each of a set of nodes in a distributed storage system, a hash value of each of the set of nodes; determining a node identifier of each of the set of nodes based on geographic location information of each of the set of nodes and the hash value, with the node identifier being used to indicate a logical location of a node in the distributed storage system; and determining, in response to a processing request from a first node in the set of nodes for first data, a target node in the set of nodes based on the node identifier of each of the set of nodes. The target node is used to process the processing request for the first data.

Abstract: Embodiments of the present disclosure include a method, an electronic device, and a computer program product for searching for data. The method includes: determining, in response to receiving at a requesting node a search request for target data, a data identifier of the target data; and determining whether the data identifier of the target data is a local data identifier or a global data identifier. The method further includes: searching for the target data using a local distributed hash table in response to determining that the data identifier is the local data identifier; and searching for the target data using a global distributed hash table in response to determining that the data identifier is the global data identifier. By using this method, it is possible to enable quick lookup of various types of data among nodes in a distributed system in a low-latency, flexible, and efficient manner.

Abstract: Embodiments of the present disclosure relate to a caching method, device, and computer program product for an edge server. The method includes acquiring a historical distribution of a set of variables associated with a network environment of the edge server, and generating one or more time series of the set of variables based on the historical distribution. The method further includes determining a caching strategy associated with the edge server based on the one or more time series of the set of variables. With the solution of the present disclosure, in an edge computing scenario, unnecessary overhead caused by ineffective caching can be reduced while ensuring smooth user experience.

Abstract: Embodiments of the present disclosure provide a method, an electronic device, and a computer program product for data processing. The method may include receiving a data conversion strategy from a server. The method may further include determining, in response to receiving unstructured data from a field device, metadata of the unstructured data based on the received data conversion strategy to form a set of metadata. In addition, the method may include transmitting at least a part of the set of metadata to the server. According to embodiments of the present disclosure, edge computing can be performed on unstructured data, which not only enables timely processing of monitoring data, but also reduces computing load on the side of the server, thereby improving the user experience.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for cross-regional data searching. The method includes acquiring a data identifier of target data in response to receiving a searching request for the target data at a first node. The method includes determining, based on the data identifier, a second node storing metadata of the target data, wherein both the first node and the second node are located in a first region, and the metadata includes the data identifier. The method further includes determining, based on the metadata, a third node storing the target data, wherein the third node is located in a second region different from the first region.

Abstract: A method includes: receiving, by a repository server, requests for pulling images from a plurality of nodes, wherein an image requested to be pulled by a first node is a first image; detecting, by the repository server, that layers of a plurality of images requested to be pulled by the plurality of nodes all include a common layer; generating, by the repository server, a transmission path of data of the common layer, wherein the transmission path includes that the repository server transmits the data of the common layer to a second node, and the second node distributes the data of the common layer to other nodes; sending, by the repository server, setting information to the first node according to the transmission path; sending, by the repository server, the data of the common layer to the second node; and acquiring, by the first node, the data of the common layer from a third node according to the setting information.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for looking up data. This method includes: acquiring, at a first node, a data identifier for data to be looked up, wherein the first node is located in a system having a layered structure, and the data identifier comprises layer information related to a layer in the layered structure. The method further includes: determining a distance between the data identifier and a node identifier for the first node. The method further includes: determining, based on the distance, a second node that can be used to acquire metadata for the data for acquiring the metadata, wherein the distance is related to positions of the first node and the second node in the layered structure. The method further includes: determining, based on the metadata, a third node storing the data for acquiring the data.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for looking up data. This method includes: acquiring, at a first node, a data identifier for data to be looked up, wherein the first node is located in a system having a layered structure, and the data identifier comprises layer information related to a layer in the layered structure. The method further includes: determining a distance between the data identifier and a node identifier for the first node. The method further includes: determining, based on the distance, a second node that can be used to acquire metadata for the data for acquiring the metadata, wherein the distance is related to positions of the first node and the second node in the layered structure. The method further includes: determining, based on the metadata, a third node storing the data for acquiring the data.

Abstract: A computing device of a data register includes persistent storage and a data register manager. The persistent storage stores: an instance of a primary chain that specifies an organizational structure of computing devices of the data register and a secondary chain for registering data with a first portion of the computing devices. The data register manager monitors sizes of each of the portions of the computing devices specified by the organizational structure; makes a determination, based on the monitoring, that the organizational structure fails to meet at least one criteria; and in response to the determination: reorganizes the organizational structure to meet the at least one criteria by, at least in part, modifying the secondary chain.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for data transmission. In one embodiment, a method includes: receiving a plurality of types of data at a first device from a plurality of data sources, each type of data having a corresponding data transmission configuration; determining a first predicted network bandwidth for transmitting data from the first device to a second device in a first time window period in the future; determining a first piece of configuration information for transmitting the plurality of types of data in the first time window period based on the first predicted network bandwidth and a plurality of data transmission configurations corresponding to the plurality of types of data; and transmitting the received plurality of types of data to the second device in the first time window period based on the first piece of configuration information.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for data storage. The method includes determining, based on attribute information of each of a set of nodes in a distributed storage system, a hash value of each of the set of nodes; determining a node identifier of each of the set of nodes based on geographic location information of each of the set of nodes and the hash value, with the node identifier being used to indicate a logical location of a node in the distributed storage system; and determining, in response to a processing request from a first node in the set of nodes for first data, a target node in the set of nodes based on the node identifier of each of the set of nodes. The target node is used to process the processing request for the first data.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for adjusting a computing load. The method in an illustrative embodiment includes: determining a total computing power demand of at least one user device that will be switched, due to movement, to being provided a computing service by a computing node; determining an available computing power of the computing node; and if the available computing power is unable to meet the total computing power demand, by adjusting a computing load of the computing node, adjusting the available computing power before the at least one user device is switched to being provided the computing service by the computing node, so as to meet the total computing power demand.

Abstract: The present disclosure provides a method for storing data, including: storing data in a first node, the first node being selected from a first node set including a first edge node and child nodes thereof; selecting, from a second node set including a second edge node and child nodes thereof, a second node for storing the data, the first edge node being a child node of the second edge node; and storing the data in the second node. The present disclosure further provides a method for searching for data. The present disclosure can reduce the time for searching for data in a distributed storage system.

Abstract: A data management method comprises: receiving, at a first node of a plurality of nodes for collaboratively data processing, a request to perform a target operation at the first node from a second node of the plurality of nodes; obtaining a privilege of the second node from a third node of the plurality of nodes; determining a threshold privilege for performing the target operation based on a type of the target operation; and performing the target operation in accordance with a determination that the privilege of the second node is higher than the threshold privilege. In this manner, the security of data may be improved.

Abstract: Techniques for improved storage in a multi-cloud computing environment are provided. For example, a system manager for a storage system comprises a client interface layer configured to provide one or more application programing interfaces for one or more clients accessing the storage system, and a client interface layer handler configured to manage the one or more application programing interfaces of the client interface layer. Further, the system manager comprises a unified storage resource interface layer configured to provide a set of application programming interfaces to enable access for the one or more clients to a storage resource layer operatively coupled to the unified storage resource interface layer. The storage resource layer comprising one or more public cloud platform-based storage resources and a blockchain manager that coordinates access to one or more enterprise-level storage resources and one or more individually-owned storage resources.

Abstract: Methods, devices and computer program products for data analysis are provided. For example, a method comprises: in response to receiving target data from a target sensor at a first time, determining one or more reference sensors based on location information of a neighbor sensor adjacent to the target sensor and a second time of receiving the latest data from the neighbor sensor; determining reference estimation data of the one or more reference sensors at the first time based on historical sensor data obtained from the one or more reference sensors; determining target estimation data of the target sensor at the first time based on the reference estimation data; and detecting abnormity of the target data based on the target data and the target estimation data. In this way, abnormity of the sensor data may be detected efficiently and accurately.