摘要:
Method and apparatus for a searchable data service are described. The searchable data service may be implemented as a Web service with a Web service interface that allows the storage of locators and other attributes associated with entities stored in a data store in a searchable index. The attributes may be expressed as {name, value} pairs. The interface may allow client applications to query the searchable index to retrieve locators for entities in the backend data store according to the attributes associated with each locator. Search speed may be automatically optimized using, for example, indexes, query planning, and parallelism. The searchable data service provides a searchable index and is not a data store per se. The searchable data service separates searching and indexing of data from the actual storage of the data.
摘要:
Method and apparatus for stress management in a searchable data service. The searchable data service may provide a searchable index to a backend data store, and an interface to build and query the searchable index, that enables client applications to search for and retrieve locators for stored entities in the backend data store. Embodiments of the searchable data service may implement a distributed stress management mechanism that may provide functionality including, but not limited to, the automated monitoring of critical resources, analysis of resource usage, and decisions on and performance of actions to keep resource usage within comfort zones. In one embodiment, in response to usage of a particular resource being detected as out of the comfort zone on a node, an action may be performed to transfer at least part of the resource usage for the local resource to another node that provides a similar resource.
摘要:
When a customer premises internet telephony device (CPE) is manufactured, the factory stores a unique CPE ID number and a contact for a pre-provisioning server in non volatile memory of the CPE. At the time a CPE is purchased by a customer, an internet telephony service provider is selected and a provisioning entity is assigned to the CPE. The unique CPE ID number and a provisioning contact are stored on the pre-provisioning server. At some future time, when the CPE is coupled to the internet, the CPE contacts the pre-provisioning server using the contact for the pre-provisioning server stored in its non volatile memory to obtain the provisioning contact for its assigned provisioning entity.
摘要:
When a customer premises internet telephony device (CPE) is manufactured, the factory stores a unique CPE ID number and a contact for a pre-provisioning server in non volatile memory of the CPE. At the time a CPE is purchased by a customer, an internet telephony service provider is selected and a provisioning entity is assigned to the CPE. The unique CPE ID number and a provisioning contact are stored on the pre-provisioning server. At some future time, when the CPE is coupled to the internet, the CPE contacts the pre-provisioning server using the contact for the pre-provisioning server stored in its non volatile memory to obtain the provisioning contact for its assigned provisioning entity
摘要:
Computed tomographic ("CT") x-ray scanning yields a discrete set of measurement values that are line integrals of attenuation coefficients .mu.(r), which attenuation coefficients may be obtained using suitable reconstruction techniques. Electronic beam computed tomograph ("EBCT") systems add error to the reconstructed attenuation coefficients owing to their unique cone geometry. A method is provided that reduces such errors. At least two scans, "tilted" by the system cone angle, collect data in the neighborhood of a reference plane normal to the system z-axis. These scans are rebinned into parallel projections, and a series expansion is considered for variation of .mu.(r) in the vicinity of the reference plane. If a first order series is considered sufficient, then two scans are required to estimate the slope A of the variation in data. The data can then be corrected for the "tilt" and line integrals on the reference plane normal to the z-axis obtained. If a second order series is necessary, two parameters A and B need to be determined from three suitably spaced scans, and the data corrected to obtain line integrals on the reference plane. The data can be corrected in the spatial domain by integration or preferably in the transform domain by differentiation. Once the line integrals are obtained on the reference plane, standard two-dimensional CT reconstruction be carried out to obtain the correct attenuation coefficients. The result is to provide a reconstructed image with reduced cone beam error.
摘要:
Method and apparatus for monitoring and maintaining group health and membership in a searchable data service. The searchable data service may provide a searchable index to a backend data store, and an interface to build and query the searchable index, that enables client applications to search for and retrieve locators for stored entities in the backend data store. Embodiments of the searchable data service may implement a group health mechanism that may allow one or more components of the searchable data service to identify sets of nodes that the components may monitor. A group health component may be queried by the other components for automatically-refreshed health information about those nodes. The group health component may perform as a node failure detection mechanism. Node health information may be communicated among nodes at least in part using a gossip protocol.
摘要:
Systems and methods for optimizing the projection of events are set forth in this disclosure. More specifically, systems and methods for projecting event data from one or more containers are set forth in this disclosure.
摘要:
A sub-manager interfaces between a traditional SNMP network management system (NMS) a plurality of clients, each of which may be served by a network address and port translation firewall. The sub-manager operates a master management information base and receives master network management request messages from the network management server. The master network management request message includes at least one master object identifier which comprises a client identifier which identifies a particular one of the clients and a variable portion that identifies a variable value within a client management information base. The sub-manager, in response, generates one or more client network management request messages to identified clients over TCP/IP connections through the firewall. The client network management request message includes a client object identifier that identifies the variable within the client management information base.