Patent application number | Description | Published |
20080228697 | View maintenance rules for an update pipeline of an object-relational mapping (ORM) platform - A database update pipeline may be incorporated into a data access architecture for providing data services to applications, thereby bridging the gap between application data and data as persisted in databases. The update pipeline has the ability to translate changes made to object instances into data store change constructs, and carry those changes over to a data store. Such a pipeline can also advantageously perform the reverse operation, allowing applications to query using the database update pipeline, and receive materialized object instances. | 09-18-2008 |
20090019288 | SECURE RECOVERY IN A SERVERLESS DISTRIBUTED FILE SYSTEM - Systems and methods for secure file writes after a catastrophic event are allowed over an unauthenticated channel in a serverless distributed file system if an authenticator accompanies the secure file writes. The authenticator can be a power-of-attorney certificate with time limitations, a vector of message authenticated code, or a single message authenticator with secured with a secret shared among members of the serverless distributed file system. The serverless distributed file system includes at least 3f+1 participating computer members, with f representing a number of faults tolerable by the system. The group requires at least one authenticator for file creation and file uploads. Any changes to files stored among the members can be made over an unauthenticated channel if the file changes are secured by the authenticator and the group is able to verify the authenticator. | 01-15-2009 |
20090055364 | DECLARATIVE VIEWS FOR MAPPING - The claimed subject matter provides systems and methods that effectuates and facilitates the generation of bidirectional views. The disclosed system can include components that transform queries and mappings into an internal representation that can be compiled into a bidirectional view. The bidirectional view can thereafter be employed to actuate query and update processing in a relational database management system. | 02-26-2009 |
20090083407 | CRISSCROSS CANCELLATION PROTOCOL - Technologies, systems, and methods for ordered message delivery that avoid message races or crisscrosses between communicating nodes. For example, if Node A sends message 3 towards Node B and, shortly thereafter, Node B sends message X to Node A, Node A would like to know whether or not message X reflects Node B's state after receiving message 3. If Node B received message 3 prior to sending message X, then proper state may be maintained between the nodes. But if messages 3 and X crisscrossed, or if message 3 was never properly received by Node B, then the state between the nodes may be corrupt. Technologies, systems, and methods are provided to avoid such corruption. | 03-26-2009 |
20090132552 | Serverless Distributed File System - A serverless distributed file system manages the storage of files and directories using one or more directory groups. The directories may be managed using Byzantine-fault-tolerant groups, whereas files are managed without using Byzantine-fault-tolerant groups. Additionally, the file system may employ a hierarchical namespace to store files. Furthermore, the directory group may employ a plurality of locks to control access to objects (e.g., files and directories) in each directory. | 05-21-2009 |
20090240987 | TEST AMPLIFICATION FOR DATACENTER APPLICATIONS VIA MODEL CHECKING - Systems and methods are provided to determine execution errors in distributed computing environments. In an illustrative implementation, a computing environment comprises a test amplification engine and at least one instruction set to instruct the test amplification engine to process data representative of a request to perform a test for one or more execution errors in an distributed computing environment according to a selected execution error testing paradigm dependent on identifying critical sources of non-determinism for execution within the exemplary distributed computing environment. In an illustrative operation, a participating distributed computing environment operator (e.g., programmer) can cooperate with the test amplification engine to select an existing unit or integration test, instrument sources of non-determinism and to select one or more instrumentations for the unit or integration test for execution in the exemplary distributed computing environment to elicit the occurrence of one or more execution errors. | 09-24-2009 |
20100088300 | RESOURCE TRACKING - Clients may subscribe to resources for the purpose of receiving notifications of changes in the resource (e.g., a file is added to a shared folder). Storing subscriptions within persistent storage provides data security in the event of a service failure, at the cost of high latency in accessing subscription data. An efficient method for tracking a resource is provided herein. A subscription service creates subscriptions and monitors resources for a client. Upon a subscribed resource change, a notification service stores a notification of the change into a queue associated with the client. Efficient resource tracking is achieved because notification and subscription data is stored in low latency soft memory. The notification service is configured to detect a failure in the notification service and/or subscription service. In the event a service fails, the client provides a recovery mechanism by resubscribing to resources the client is interested in. | 04-08-2010 |
20100250646 | MECHANISM FOR GEO DISTRIBUTING APPLICATION DATA - The claimed subject matter provides systems and methods that effectuates inter-datacenter resource interchange. The system can include devices that receive a resource request from a client component, forward the resource request to a management component that returns a cluster identity associated with a remote datacenter, the resource request and the cluster identity combined and dispatched to the remote datacenter via an inter-cluster gateway component for subsequent fulfillment by a remote server associated the remote datacenter. | 09-30-2010 |
20100287299 | CRISSCROSS CANCELLATION PROTOCOL - Technologies, systems, and methods for ordered message delivery that avoid message races or crisscrosses between communicating nodes. For example, if Node A sends message | 11-11-2010 |
20100287300 | CRISSCROSS CANCELLATION PROTOCOL - Technologies, systems, and methods for ordered message delivery that avoid message races or crisscrosses between communicating nodes. For example, if Node A sends message 3 towards Node B and, shortly thereafter, Node B sends message X to Node A, Node A would like to know whether or not message X reflects Node B's state after receiving message 3. If Node B received message 3 prior to sending message X, then proper state may be maintained between the nodes. But if messages 3 and X crisscrossed, or if message 3 was never properly received by Node B, then the state between the nodes may be corrupt. Technologies, systems, and methods are provided to avoid such corruption. | 11-11-2010 |
20130080632 | CRISSCROSS CANCELLATION PROTOCOL - Technologies, systems, and methods for ordered message delivery that avoid message races or crisscrosses between communicating nodes. For example, if Node A sends message 3 towards Node B and, shortly thereafter, Node B sends message X to Node A. Node A would like to know whether or not message X reflects Node B's state after receiving message 3. If Node B received message 3 prior to sending message X, then proper state may be maintained between the nodes. But if messages 3 and X crisscrossed, or if message 3 was never properly received by Node B, then the state between the nodes may be corrupt. Technologies, systems, and methods are provided to avoid such corruption. | 03-28-2013 |
20130111069 | RESOURCE TRACKING | 05-02-2013 |