摘要:
A system and method are disclosed for an elastic and scalable publish/subscribe scheme. Subscription information is received at a dispatcher node. A plurality of matching nodes is selected in an overlay network to store the subscription information on a computer readable storage medium. Upon receiving an event at a dispatching node, at least one of the matching nodes with the stored subscription information is selected to process the event.
摘要:
Embodiments of the invention relate to message queuing. In one embodiment, a request from an application for retrieving a message from a queue is received. The queue is stored across multiple nodes of a distributed storage system. A preference with respect to message order and message duplication associated with the queue is identified. A message sequence index associated with the queue is sampled based on the preference that has been identified. The message is selected in response to the sampling. The message that has been selected is made unavailable to other applications for a given interval of time, while maintaining the message in the queue. The message is sent to the application.
摘要:
A system and method are disclosed for an elastic and scalable publish/subscribe scheme. Subscription information is received at a dispatcher node. A plurality of matching nodes are selected in an overlay network to store the subscription information on a computer readable storage medium. Upon receiving an event at a dispatching node, at least one of the matching nodes with the stored subscription information is selected to process the event.
摘要:
A system and method are disclosed for an elastic and scalable publish/subscribe scheme. Subscription information is received at a dispatcher node. A plurality of matching nodes is selected in an overlay network to store the subscription information on a computer readable storage medium. Upon receiving an event at a dispatching node, at least one of the matching nodes with the stored subscription information is selected to process the event.
摘要:
A system and method are disclosed for an elastic and scalable publish/subscribe scheme. Subscription information is received at a dispatcher node. A plurality of matching nodes are selected in an overlay network to store the subscription information on a computer readable storage medium. Upon receiving an event at a dispatching node, at least one of the matching nodes with the stored subscription information is selected to process the event.
摘要:
A system may include an overlay network linking a plurality of publishers, a plurality of subscribers, and a plurality of brokers. The overlay network may include a first computer network having a first network protocol carried by a second computer network having a second network protocol. The system may also include an agent carried by each of the publishers, the subscribers, and the brokers that adjust the network's topology based upon collected runtime data of condition of each link within the network and/or broker availability to any publisher and subscriber.
摘要:
A system may include an overlay network linking a plurality of publishers, a plurality of subscribers, and a plurality of brokers. The overlay network may include a first computer network having a first network protocol carried by a second computer network having a second network protocol. The system may also include an agent carried by each of the publishers, the subscribers, and the brokers that adjust the network's topology based upon collected runtime data of condition of each link within the network and/or broker availability to any publisher and subscriber.
摘要:
Techniques for transmitting data according to at least one quality of service requirement. A message path is calculated specifying a sequence of broker computers selected from a network of interconnected broker computers. The message path is statistically estimated to fulfill the at least one quality of service requirement. Quality of service metrics are received about the network of interconnected broker computers. If the message path is determined not to fulfill the quality of service requirement, a new message path is calculated specifying a new sequence of broker computers selected from the network of interconnected broker computers. The new message path is statistically estimated to fulfill the at least one quality of service requirement.
摘要:
Techniques for transmitting data according to at least one quality of service requirement. A message path is calculated specifying a sequence of broker computers selected from a network of interconnected broker computers. The message path is statistically estimated to fulfill the at least one quality of service requirement. Quality of service metrics are received about the network of interconnected broker computers. If the message path is determined not to fulfill the quality of service requirement, a new message path is calculated specifying a new sequence of broker computers selected from the network of interconnected broker computers. The new message path is statistically estimated to fulfill the at least one quality of service requirement.
摘要:
A common infrastructure collects diverse data and information from large numbers of mobile devices and traditional sensors at Internet scale to support multiple different applications simultaneously. The infrastructure includes a backend phenomenon layer that provides high level abstractions to applications such that they can express their data and information needs in a declarative fashion and coordinate the data collection and processing activities for all applications. An edge layer that manages devices, receives collection requirements from the backend layer, configures and instructs devices for data collection, and conducts aggregation and primitive processing of the data. This layer contains network edge nodes, such as base stations in a cellular network. Each node manages a set of local data generating networked devices. The device agent data layer using common agents on the data generating networked devices receives data collection instructions from the edge layer, performs data collection.