850 results about "Distributed cache" patented technology

A network arrangement that employs a cache having copies distributed among a plurality of different locations. The cache stores state information for a session with any of the server devices so that it is accessible to at least one other server device. Using this arrangement, when a client device switches from a connection with a first server device to a connection with a second server device, the second server device can retrieve state information from the cache corresponding to the session between the client device and the first server device. The second server device can then use the retrieved state information to accept a session with the client device.

Distributed Internet caching via multiple node caching management. Caching decisions and management are performed based on information corresponding to more than one caching node device (sometimes referred to as a distributed caching node device, distributed Internet caching node device, and/or DCN) within a communication system. The communication system may be composed of one type or multiple types of communication networks that are communicatively coupled to communicate there between, and they may be composed of any one or combination types of communication links therein [wired, wireless, optical, satellite, etc.]). In some instances, more than one of these DCNs operate cooperatively to make caching decisions and direct management of content to be stored among the more than one DCNs. In an alternative embodiment, a managing DCN is operative to make caching decisions and direct management of content within more than one DCNs of a communication system.

The present invention extends to trusted third party authentication for Web services. Web services trust and delegate user authentication responsibility to a trusted third party that acts as an identity provider for the trusting Web services. The trusted third party authenticates users through common authentication mechanisms, such as, for example, username/password and X.509 certificates and uses initial user authentication to bootstrap subsequent secure sessions with Web services. Web services construct user identity context using a service session token issued by the trusted third party and reconstruct security states without having to use a service-side distributed cache.

The invention discloses a distributed type dynamic cache expanding method and system supporting load balancing, which belong to the technical field of software. The method comprises steps of: 1) monitoring respective resource utilization rate at regular intervals by each cache server; 2) calculating respective weighing load value Li according to the current monitored resource utilization rate, and sending the weighting load value Li to a cache clustering manager by each cache server; 3) calculating current average load value of a distributed cache system by the cache clustering manager according to the weighting load value Li, and executing expansion operation when the current average load value is higher than a threshold thremax; and executing shrink operation when the current average load value is lower than a set threshold thremin. The system comprises the cache servers, a cache client side and the cache clustering manager, wherein the cache servers are connected with the cache client side and the cache clustering manager through the network. The invention ensures the uniform distribution of the network flow among the cache nodes, optimizes the utilization rate of system resources, and solves the problems of ensuring data consistency and continuous availability of services.

A distributed cache data system includes a cache adapter configured to reserve a designated portion of memory in at least one node in a networked cluster of machines as a contiguous space. The designated portion of memory forms a cache and the designated portion of memory includes data cells configured to store data. The cache adapter is configured to interface with the data and a distributed file system and the cache adapter is further configured to provide an interface for external clients to access the data. The cache adapter is configured to communicate to clients via a web server, and the cache adapter is further configured to direct data access requests to appropriate the data. A related process of distributing cache data is disclosed as well.

The invention discloses a distribution-base mass log collection system comprising a data source layer, a distribution-type cache layer, a distribution-type storing and calculating layer, a bushiness processing layer, a visible display layer and a unified dispatching and managing module. The system has the advantages that the problem of log collection and high-speed storage can be solved effectively, the distribution-type storage and search engine technology is adopted, querying and retrieval speed can be increased, and the mass logs can be collected and analyzed accurately and accurately in high speed.

The design, internal data representation and query model of the invention, a hierarchical distributed caching system for semi-structured documents based on LDAP technology is presented that brings both, the semi-structured data model and the LDAP data model together into a system that provides the ideal characteristics for the efficient processing of XPath queries over XML documents. Transformation algorithms and experimental results have also been shown that prove the feasibility of the invention as a distributed caching system especially tailored for semi-structured data.

The present disclosure discloses a method, a system and a server of removing a distributed caching object. In one embodiment, the method receives a removal request, where the removal request includes an identifier of an object. The method may further apply consistent Hashing to the identifier of the object to obtain a Hash result value of the identifier, locates a corresponding cache server based on the Hash result value and renders the corresponding cache server to be a present cache server. In some embodiments, the method determines whether the present cache server is in an active status and has an active period greater than an expiration period associated with the object. Additionally, in response to determining that the present cache server is in an active status and has an active period greater than the expiration period associated with the object, the method removes the object from the present cache server. By comparing an active period of a located cache server with an expiration period associated with an object, the exemplary embodiments precisely locate a cache server that includes the object to be removed and perform a removal operation, thus saving the other cache servers from wasting resources to perform removal operations and hence improving the overall performance of the distributed cache system.

The invention discloses a method and a system for improving the large data volume query performance and belongs to the technical field of large data volume query. The method comprises A, loading data in a disk database into distributed caches in a cache ID-entity data key value pair mode, and storing the cache ID and key information of the entity data in a cache ID table of a memory database simultaneously; B, querying the cache ID table according to a query request when the query request sent by a client is obtained to selecting an ID set meeting the query request; C, obtaining the entity data from corresponding distributed caches according to the cache ID set and returning the entity data to the client. By means o the system and the method, loads of the disk database can be effectively reduced, and the big data query performance is improved.

A plurality of access nodes sharing access to data on a storage network implement a directory based cache ownership scheme. One node, designated as a global coordinator, maintains a directory (e.g., table or other data structure) storing information about I/O operations by the access nodes. The other nodes send requests to the global coordinator when an I/O operation is to be performed on identified data. Ownership of that data in the directory is given to the first requesting node. Ownership may transfer to another node if the directory entry is unused or quiescent. The distributed directory-based cache coherency allows for reducing bandwidth requirements between geographically separated access nodes by allowing localized (cached) access to remote data.

A distributed caching and redistribution system, method, and mobile client for caching and redistributing data content in a wireless data network. The system enables mobile clients to cache data content that has been distributed by means of broadcast or multicast, and to redistribute the content from the cache to other users. Using anycast techniques applied to the PLMN, a user who wants to retrieve data that was distributed earlier locates the nearest user that has the content available, and asks the nearest user to forward the content. The “nearest” user may be the closest user, but may also be the optimal user from a Quality of Service (QoS) point of view.

An embodiment of a method of operating a distributed storage system includes reading m data blocks from a distributed cache. The distributed cache comprises memory of a plurality of independent computing devices that include redundancy for the m data blocks. The m data blocks and p parity blocks are stored across m plus p independent computing devices. Each of the m plus p independent computing devices stores a single block selected from the m data blocks and the p parity blocks.

A system and method for transferring multiple portions of data utilizing a distributed cache are disclosed. A content server obtains a request for content data and associates an identifier with the request. The content server returns a first portion of the data with the request and stores a second portion of the data in a cache according to the first identifier. Thereafter, the content server receives a request for the remaining portion of the provider data and associates a second identifier with the second request. If the second identifier matches the first identifier, the content server returns the data stored according to the first identifier. Additionally, the content server implements and utilizes a click server having multiple cache servers in which multi-cache replication is utilized to store identical contents in each cache server.

A broadband communication system with improved latency is disclosed. The system employs distributed caching techniques to assemble data objects at locations proximate to a source to avoid latency over delayed links. The assembled data objects are then multicast to one or more remote terminals in response to a request for the objects, thus reducing unnecessary data flow across the satellite link.

The present invention provides a system and method for dynamic object-driven database manipulation and mapping system which relates in general to correlating or translating one type of database to another type of database or to an object programming application. Correlating or translating involves relational to object translation, object to object translation, relational to relational, or a combination of the above. Thus, the present invention is directed to dynamic mapping of databases to selected objects. Also provided are systems and methods that optionally include caching components, security features, data migration facilities, and components for reading, writing, interpreting and manipulating XML and XMI data files.

A multi-processor, multi-cache system has filter pipes that store entries for request messages sent to a central coherency controller. The central coherency controller orders requests from filter pipes using coherency rules but does not track completion of invalidations. The central coherency controller reads snoop tags to identify sharing caches having a copy of a requested cache line. The central coherency controller sends an ordering message to the requesting filter pipe. The ordering message has an invalidate count indicating the number of sharing caches. Each sharing cache receives an invalidation message from the central coherency controller, invalidates its copy of the cache line, and sends an invalidation acknowledgement message to the requesting filter pipe. The requesting filter pipe decrements the invalidate count until all sharing caches have acknowledged invalidation. All ordering, data, and invalidation acknowledgement messages must be received by the requesting filter pipe before loading the data into its cache.

The invention provides a massive structured data storage method, a massive structured data query method, a massive structured data storage system and a massive structured data query system, which all support high-speed loading. The distributed storage method for massive structured data comprises the following steps of: receiving the data which is loaded at high speed from a user; and caching the loaded data in a distributed way by utilizing a double-sliding window structure, and storing the cached data in the distributed way after a fixed period. By the distributed storage method for the massive structured data, newly-loaded data can be cached, so that the query efficiency of application such as streaming data which frequently uses recently-loaded data in post data query can be improved.

Various embodiments of the present disclosure provide improved systems and techniques for intelligently allocating cache requests to caches based upon the nature of the cache objects associated with the cache requests, and/or the condition of the caches in the distributed cache system, to facilitate cache system utilization and performance. In some embodiments, an allocation of cache requests may be performed in response to detection of a problem at one of a group of cache servers. For example, in some embodiments, a particular cache server may be entered into a safe mode of operations when the cache's ability to service cache requests is impaired. In other embodiments, an allocation of cache requests may be performed based on an cache object data type associated with the cache requests.

A processor of an aspect includes a plurality of logical processors each having one or more corresponding lower level caches. A shared higher level cache is shared by the plurality of logical processors. The shared higher level cache includes a distributed cache slice for each of the logical processors. The processor includes logic to direct an access that misses in one or more lower level caches of a corresponding logical processor to a subset of the distributed cache slices in a virtual cluster that corresponds to the logical processor. Other processors, methods, and systems are also disclosed.

The invention discloses a distributed cache control method which comprises the following steps: according to the configuration information, a data access protocol and routing information are pre-loaded; according to the pre-loaded data access protocol, the data access request of a client is received; according to the pre-loaded routing information, at least a cache server in which the data requested by the data access request is located in is searched; according to status information of all searched cache servers, one cache server is selected as a target cache server; and the data access request is forwarded to the target cache server according to the pre-loaded data access protocol, to respond to the data access request. Correspondingly, the invention also discloses a distributed cache control device and a system. The invention can support various data access protocols, flexibly switch the used cache servers according to the status information of the cache servers, and realize the flexible control to distribution cache.

Provided are a method, system, and program for maintaining data in distributed caches. A copy of an object is maintained in at least one cache, wherein multiple caches may have different versions of the object, and wherein the objects are capable of having modifiable data units. Update information is maintained for each object maintained in each cache, wherein the update information for each object in each cache indicates the object, the cache including the object, and indicates whether each data unit in the object was modified. After receiving a modification to a target data unit in one target object in one target cache, the update information for the target object and target cache is updated to indicate that the target data unit is modified, wherein the update information for the target object in any other cache indicates that the target data unit is not modified.