Red Hat, Inc.

Thomas John Jenkinson

Paul Fletcher Robinson

A method including initiating a transaction comprising a plurality of data items in one or more data stores, wherein the transaction is to cause a change to at least a first data item of the plurality of data items. The method also including generating a first transactional data usable to undo the change to the first data item associated with the transaction, wherein the first transaction data comprises a serialized compensation data structure to undo the change to the first data item and complementary information regarding activities complementary to the undo operation.

Transaction compensation for single phase resources

A display device includes a display comprising a plurality of pixels. The display also has a plurality of regions. At least one of the plurality of regions is a protected region and the protected region includes at least one protection pixel. The display device also includes an image generator configured to receive a source image data for display content, identify a portion of the display content that includes sensitive data, and output the display content such that at least a portion of the protected region containing the sensitive data is displayed in at least one of a protection wavelength and a protection brightness.

Un-photographable screens and displays

A non-repudiable transaction protocol system includes a memory, at least one processor in communication with the memory, an operating system executing on the at least one processor, a resource manager configured to manage a storage system, and a transaction manager. The transaction manager is configured to provide NRO-W evidence of a work request from a client to the resource manager and provide NRR-W evidence to the client that the resource manager has completed initial work for the work request. Additionally, the transaction manager is configured to provide NRO-C evidence to the resource manager that the client requested completion of the initial work and NRR-C evidence to the client that the resource manager promised to execute the completion. Each of the NRO-W evidence, the NRR-W evidence, the NRO-C evidence, and the NRR-C evidence are exchanged to prevent either one of the client and the resource manager from gaining an advantage.

Non-repudiable transaction protocol

An efficient and scalable transaction processing using a consensus-based transaction model is disclosed. A transaction processor receives a transaction that includes a plurality of update subtransactions to be performed against a corresponding plurality of resources. A transaction identifier (ID) that corresponds to the transaction is determined. For each resource of the plurality of resources, the transaction ID is sent to a resource manager associated with the resource to determine a status of the corresponding update subtransaction as one of 1) a not seen status, 2) a prepared status, or 3) a committed status. Based on the status of the corresponding update subtransaction, any action against the resource via the resource manager that is necessary to bring the status of the corresponding update subtransaction to the committed status is performed. The transaction is marked as being completed.

Efficient and scalable transaction processing using a consensus-based transaction model

A system includes a memory, a processor in communication with the memory, a unique identifier generator, a transmitter, at least one receiver, a display, and a viewing aid. The transmitter is configured to transmit information about a unique identifier generated from the unique identifier generator. The receiver is configured to receive the information from the transmitter. The display is configured to emit polarized light at a plurality of polarizations. Additionally, the plurality of polarizations includes a plurality of different noise polarizations and polarized light at a polarization factor based on the unique identifier. The viewing aid has a filter that is configured to pass light at the polarization factor and block light at the plurality of different noise polarizations.

Dynamic privacy glasses

Various examples are directed to systems and methods for executing distributed transactions. A transaction manager may send to a resource manager a first prepare message that describes a first work item to be performed by the resource manager for a first transaction. The transaction manager may also send to the resource manager a second prepare message that describes a second work item to be performed by the resource manager for a second transaction. The transaction manager may detect a flush event and send to the resource manager a batch commit message instructing the resource manager to commit the first work item and the second work item.

Batched commit in distributed transactions

A method including initiating, by a processing device, a transaction including a plurality of data items in one or more data stores to cause a change to at least a data item of the plurality of data items. The transaction includes a transaction identifier (ID). The method further includes for at least a data item of the plurality of data items, generating transactional data usable to undo the change to each data item associated with the transaction. The method further includes intercepting data items. The method further includes adding the transactional ID and the transactional data to each data item. The method further includes providing the data items to a data store of the one or more data stores.

Various examples are directed to systems and methods for coordinating a non-repudiable atomic commit transaction. A client may direct a transaction request to a transaction manager, where the transaction request comprises a transaction origin token. The transaction manager may create a transaction submission token and provide it to the client. The transaction manager may create a digest of a first work item to be executed by a first resource manager and send the digest to the first resource manager. The first resource manager may send the transaction manager a work item receipt token. The transaction manager may send the resource manager the transaction origin token.

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North Yorkshire, United Kingdom

Thomas John Jenkinson