Abstract: Some embodiments provide instantaneous and non-blocking content purging across storage servers of a distributed platform. When a server receives a purge operation, it extracts an identifier from the purge operation. The server then generates a content purge pattern from the identifier and injects the pattern to its configuration. Instantaneous purging is then realized as the server averts access to any cached content identified by the pattern. The purging also occurs in a non-blocking fashion as the physical purge of the content occurs in-line with the server's cache miss operation. The content purge pattern causes the server to respond to a subsequently received content request with a cache miss, whereby the server retrieves the requested content from an origin source, serves the retrieved content to the requesting user, and replaces a previously cached copy of the content that is to be purged with the newly retrieved copy.

Abstract: A plurality of virtual content delivery network nodes are implemented using virtualization infrastructure of at least one processing platform. The processing platform is implemented using at least one processing device comprising a processor coupled to a memory. Each of the virtual content delivery network nodes comprises one or more virtual network function instances of a network functions virtualization framework of the virtualization infrastructure. The virtual content delivery network nodes may be dynamically added to, modified in and deleted from at least one virtual content delivery network in accordance with one or more specified policy criteria. A virtual content delivery network control plane may be arranged as an overlay relative to the network functions virtualization framework of the virtualization infrastructure. The virtual content delivery network control plane communicates with the network functions virtualization framework via one or more application programming interfaces.

Abstract: A request from a watcher client to obtain presence information of a presentity client may be processed at a presence server using a system configuration of the presence server that stores local presence authorization rules (“pres-rules”). By storing pres-rules locally at the presence server, these pres-rules may be used by the presence server in lieu of, or in combination with, other pres-rules that may be maintained by a separate pres-rules storage server, such as an eXtensible Markup Language (XML) Document Management Server (XDMS). The system configuration may specify configurable parameters that control the behavior of the presence server in engaging the XDMS when processing requests from watcher clients, as well as the behavior of the presence server in merging pres-rules retrieved from the XDMS with the local pres-rules maintained by the presence server.

Abstract: A messaging system comprises a plurality of connected components and including a schema defining fields for messages, at least one field defined as non-essential. A mechanism for operating the messaging system comprises the steps of collecting one or more performance metrics for one or more components of the messaging system, determining that at least one performance metric has crossed a predetermined threshold, informing one or more components of the messaging system that a surge in workload has occurred, and the informed components removing non-essential fields from transmitted messages and/or not processing non-essential fields from received messages.

Abstract: A policy that includes an address group is received. The policy is compiled into a set of one or more rules. The compiling is performed at least in part by determining members of the address group. The compiling can further include substituting one or more IP addresses of the members for the address group. At least one rule included in the set of rules is enforced.

Abstract: An enhanced address domain is presented herein. A system can comprise a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising: creating an upper-layer socket of an enhanced address domain; allocating a protocol control block (PCB) and associating the PCB with the upper-layer socket—the PCB storing information representing a private state of the upper-layer socket; creating a lower-layer socket of an existing address domain—the lower-layer socket referenced from the upper-layer socket using the PCB; and installing upcall(s) on the lower-layer socket to be intercepted via the enhanced address domain. In an aspect, the upper-layer socket supports enhancement(s) to the existing address domain and a socket type of the lower-layer socket.

Abstract: Techniques for state synchronization in a service environment are described. In at least some embodiments, different synchronization models are employed to synchronize state for resources in a service environment. For instance, embodiments may employ a “pull model” whereby a resource periodically queries for changes in resource state to be applied to the resource. Alternatively or additionally, a “push model” can be employed whereby notifications are pushed to resources, informing the resources that they are to update their state. Thus, based on various considerations for a service environment, instances and/or combinations of the disclosed synchronization models can be implemented.

Abstract: The present application discloses a method for caching data, which is capable of determining a caching location of content according to a popularity of the content and impact of caching the content on network bandwidth, so as to save the network bandwidth. The method includes: receiving a first data packet from a server, and a caching gain included in the first data packet is a maximum value of local caching gains of all forwarding devices on a first content delivery path; and caching first content included in the first data packet when determining that the caching gain in the first data packet matches a local caching gain corresponding to an identity of the first content, where the local caching gain corresponding to the identity of the first content is generated by calculation according to a first parameter and a popularity of the first content.

Abstract: A method and apparatus for testing and simulating an access control policy are disclosed. Evaluating an access control policy may be performed by utilizing a deny statement that causes the access request to be rejected despite actions indicated in the access request being authorized. Further, an independent simulation environment may be utilized for testing access control policy evaluation.

Abstract: Methods, robots, systems, and computer-readable media are provided for selectively uploading operational data generated by a robot to a remote computing system. In various implementations, a robot may classify a plurality of operational data points generated by the robot with a plurality of operational data types. The robot may also identify one or more attributes of a physical communication link between the robot and a remote computing system. Based on the one or more attributes of the physical communication link, the robot may identify a plurality of strategies for uploading operational data from the robot to the remote computing system. Each strategy may govern how operational data points of at least one of the plurality of operational data types is uploaded. The robot may then selectively upload the plurality of classified operational data points to the remote computing system pursuant to the plurality of strategies.

Abstract: A Cloud federator may be used to allow seamless and transparent access by a Cloud Client to Cloud services. Federation may be provided on various terms, including as a subscription based real-time online service to Cloud Clients. The Cloud federator may automatically and transparently effect communication between the Cloud Client and Clouds and desired services of the Clouds, and automatically perform identity federation. A Service Abstraction Layer (SAL) may be implemented to simplify Client communication, and Clouds/Cloud services may elect to support the SAL to facilitate federation of their services.

Abstract: A computing device and a method for a computing device to control access to data stored on a data store of the device. An access component of the device having control over access to the data. The access component being operative to receive a request for data from a requesting component, identify an assigned access domain of the requesting component and an assigned data domain of the requested data and determine whether the requesting component is authorized to access the data by comparing the assigned access domain and the data domain with permissions specified in a security policy. If the assigned access domain is authorized to access the data domain, the access component may provide access to the requested data.

Abstract: Systems and methods in accordance with various embodiments of the invention enable quality based streaming. A content player in accordance with an embodiment of the invention includes: a processor; a network interface; and memory containing a content player application. The content player application can direct the processor to: receive quality metadata describing a plurality of streams, where: the plurality of streams are encoded at different maximum bitrates; each stream is divided into content segments; and the quality varies between content segments in each stream. Furthermore, the content player application directs the processor to measure available bandwidth; request content segments from the plurality of streams based upon the available network bandwidth and the quality metadata, where the requested content segments include content segments encoded at a maximum bitrate and having quality that is the lowest maximum bitrate that achieves a target quality level.

Abstract: A system is disclosed for managing large datasets. The system comprises a physical network. The physical network comprises a plurality of computing devices with a plurality of processors. The system further comprises a logical peer-to-peer (P2P) network with a plurality of nodes. The system further comprises a distributed file system for distributing data and jobs received by the system randomly across the plurality of nodes in the P2P network. The system duplicates the data to neighboring nodes of the plurality of nodes. The nodes monitor each other to reduce loss of data. The system further comprises a task scheduler. The task scheduler balances load across the plurality of nodes as tasks, derived from jobs, are distributed to various nodes. The task scheduler redistributes and forwards tasks to ensure the nodes processing the tasks are best suited to process those tasks.

Abstract: Dynamic discovery of peers or services in different networks, where few or no servers may be required for the discovering process, is provided. Broadcasting used for the peer or service discovery may serve to reduce centralized bottlenecks and may serve to increase scalability.

Abstract: An event analysis system receives events in a time-series from a set of monitored systems and identifies a set of alert threshold values for each of the types of events to identify outliers in the time-series at an evaluated time. Portions of historic event data is selected to identify windows of event data near the evaluated time at a set of seasonally-adjusted times to predict the value of the event type. The alert threshold value may also account for a prediction based on recent, higher-frequency events. Using the alert threshold values for a plurality of event types, the event data is compared with the alert threshold values to determine an alert level for the data. The event data types are also clustered and displayed with the alert levels to provide a visualization of the event data and identify outliers when the new event data is received.

Abstract: Managing data in a cloud computing environment, including data transfers. File level and block level similarities are identified, including for archive and nested archive files, residing on datacenters and regional repositories. A replication plan is generated based on receiving a replication instruction, and further based on similarity clusters by transferring unique data blocks and files from best available sources including regional repositories.

Abstract: An information storage system and an information storage method allow necessary information to be stored in the proper amount with a simple operation for people to share the information. The system includes an input unit including a plurality of press-type switches each of which accepts input for an on-signal or an off-signal and a data server storing pieces of identification information each identifying a corresponding one of the switches and messages in association with each other and outputs, in response to input accepted by each of the switches, a corresponding one of the messages. The input unit transmits an on-signal or an off-signal and a piece of identification information to the data server. The data server receives the on-signal or the off-signal and the piece of identification information and extracts and outputs a message associated with the piece of identification information received together with the on-signal.

Abstract: A method for managing a messaging system for receiving at a messaging server a message addressed, storing the message, transmitting a notification of the presence of the message at the messaging server, receiving a request to retrieve the message, validating the first mobile messaging client device, transmitting the message and a message attribute from the messaging server to the first mobile messaging client device, and receiving at the messaging server from the first mobile messaging client device a message management notification generated by the first mobile messaging client device in connection with managing the message in accordance with the message attribute at the first mobile messaging client device.

Abstract: Techniques for serving a manifest file of an adaptive streaming video include receiving a request for the manifest file from a user device. The video is encoded at different reference bitrates and each encoded reference bitrate is divided into segments to generate video segment files. The manifest file includes an ordered list of universal resource locators (URLs) that reference a set of video segment files encoded at a particular reference bitrate. A source manifest file that indicates the set of video segment files is identified based on the request. An issued manifest file that includes a first URL and a second URL is generated based on the source manifest file. The first URL references a first domain and the second URL references a second domain that is different from the first domain. The issued manifest file is transmitted to the user device as a response to the request.