Abstract: Some electronic devices may not include hardware such as a gyroscope that is capable of providing precise orientation information. In some implementations, accelerometer data may be used to determine a content display adjustment (e.g., an adjustment to a first person perspective view in a game scene) by sampling accelerometer data over multiple time periods. For example, accelerometer data may be used to determine short term and longer term accelerometer sample values. The content display adjustment may be determined based at least in part on the accelerometer sample values and information associated with the content display adjustment may be communicated to a display.

Abstract: Systems, methods, and computer-readable media provide content items to clients. In one implementation, a system stores data identifying a plurality of cache servers, the cache servers storing the content items for download by a plurality of clients. The system receives a request from a first one of the clients to download one of the content items. The system selects one or more of the cache servers for providing the requested content item to the first client. The system transmits identifiers of the selected one or more cache servers to the first client, and transmits instructions to the first client. The instructions are operable, when executed by the first client, to determine whether the selected one or more cache servers have a local copy of the requested content item. When the first client determines that a first one of the selected one or more cache servers has a local copy of the requested content item, the first client downloads the requested content item from the first selected cache server.

Abstract: An unmanned vehicle may be utilized to perform various tasks, such as delivering packages and picking up packages for delivery in coordination with a physical access control device. Authentication and authorization processes may be used to grant the unmanned vehicle access to a physical space controlled by a physical access control device. A subsystem of the unmanned vehicle and the physical access control device may both support execution of computer instructions in a protected execution environment. A protected execution environment may be configured to provide an attestation to a remote counterparty, receive a purported attestation associated with the counterparty, verify the purported attestation is authentic using a root of trust in common with the remote counterparty, and perform authentication and authorization routines in connection with access policies of the unmanned vehicle, the physical access control device, or both.

Abstract: Devices and methods are provided for providing software developer-driven analysis for the expected impact that a proposed software modification may have on software programs and devices. A device may receive files including a first file including indications of: (i) a feature modified by one or more software modifications, (ii) a sub-feature associated with the feature and modified by the one or more software modifications, and (iii) first information associated with the feature, and a second file including indications of: (i) the feature, (ii) the sub-feature, and (iii) second information associated with the feature. The device may determine a record including indications of: (i) the feature, (ii) the sub-feature, (iii) the first information, and (iv) the second information. The device may determine a test plan including one or more tests performed based on the record. The device may execute at least a portion of the test plan.

Abstract: A media universe system may provide digital media content to clients via methods and apparatus that provide interactive and immersive viewing experiences to the clients. A repository service may store digital assets for the media universe and maintain an asset tracking database that may track how the digital assets of the media universe relate to one another over time within a world encompassed by the media universe. The repository service may also maintain mappings between the digital assets and other content of the media universe. The repository service may serve as a centralized continuity database for the world and the media universe. Providing an accessible, scalable, network-based location for the continuity database may enable developers to build interactive experiences for users to explore the world of the media universe, both spatially and temporally.

Abstract: A block-based storage system may implement page cache write logging. Write requests for a data volume maintained at a storage node may be received at a storage node. A page cache for may be updated in accordance with the request. A log record describing the page cache update may be stored in a page cache write log maintained in a persistent storage device. Once the write request is performed in the page cache and recorded in a log record in the page cache write log, the write request may be acknowledged. Upon recovery from a system failure where data in the page cache is lost, log records in the page cache write log may be replayed to restore to the page cache a state of the page cache prior to the system failure.

Abstract: Methods and apparatus for supporting cached volumes at storage gateways are disclosed. A storage gateway appliance is configured to cache at least a portion of a storage object of a remote storage service at local storage devices. In response to a client's write request, directed to at least a portion of a data chunk of the storage object, the appliance stores a data modification indicated in the write request at a storage device, and asynchronously uploads the modification to the storage service. In response to a client's read request, directed to a different portion of the data chunk, the appliance downloads the requested data from the storage service to the storage device, and provides the requested data to the client.

Abstract: Technologies are disclosed for enabling application search through the use of programmatic application state indexing. The disclosed technologies enable applications to be systematically explored using a program to identify the various states of the application. For example, UI displays provided by an application can be explored and text or other content can be captured from each UI display. The text or other content can then be indexed and utilized to search applications and to navigate directly to specific application states.

Abstract: An overlay network analysis method obtains data including but not limited to client packet traffic data on an overlay network, and performs one or more analyses based on the obtained data to generate and output topological and/or performance information for the overlay network and/or the network substrate on which the overlay network is implemented. Client traffic data collected for specific client resource instances may be analyzed to generate performance metrics for the overlay network between the instances. Aggregated client traffic data for specific clients may also be analyzed to generate mappings of the clients' private network implementations on the overlay network, as well as performance metrics for the clients' private networks on the overlay network. In addition, client traffic data from multiple clients may be aggregated and analyzed to generate mappings and performance metrics for the overlay network as a whole.

Abstract: Systems and methods in accordance with various embodiments of the present disclosure provide secure handling of messages at a hardware-protocol level using a logic device on a server. Various embodiments provide approaches for filtering messages on various buses, such as SSIF, SMBus, PMBus, I2C, and SPI, within a server or a computer. Embodiments may include a policy engine through which message handling logic applied to a given bus or buses may be implemented. A message is compared to one or more policies. The message is allowed to be transmitted to a baseboard management controller based on the one or more policies and a type of message.

Abstract: A client may send to a provider network a request to classify data at one or more data sources of the client network. The provider network receives the request and transmits the request to a local instance of a network-based data classification service at the client network. The local instance of the network-based data classification service classifies the data at the one or more data sources. The data is not exposed outside of a data isolation boundary associated with the client network during classification of the data by the local instance of the network-based data classification service. The provider network may initially provision the local instance of the network-based data classification service to run on the client network.

Abstract: A network-attachable rack-mountable computing device is housed within a shippable enclosure and is configured to mount in a rack. The device may be initialized (e.g., prepared to receive data, and an updateable electronic shipping display set to a shipping destination) by a service provider and shipped, in accordance with a displayed destination address, as a self-contained shipping unit. The device may be coupled with other devices via coupling mechanisms included in an enclosure of the device and may be mounted in a rack at a destination via mounting brackets included in the enclosure of the device. The device may be installed onto a network at the destination and loaded with data. When the device is received back at the service provider, the data is transferred from the device to a service provider storage facility, wiped of data, and prepared to be sent out again.

Abstract: A connected device at a client network implements a local data classification service for classifying data based on a data classification service of a remote provider network. The local data classification service receives a request to classify data at one or more data sources of the client network. The request is initiated from a client device of the client network according to a management interface for a data classification service of a remote provider network (e.g., using the same API request used by the remote classification service). The local data classification service obtains at least some of the data from the one or more data sources of the client network. The local data classification service classifies the obtained data according to different types of sensitivity using the data classification engine in the execution environment without the data being exposed outside of a data isolation boundary of the client network.

Abstract: A database system may implement efficient database journaling using non-volatile system memory. An update to a database may be received, and log records indicating the update may be generated. A non-volatile portion of the system memory may be directly accessed to store the generated log records such that in the event of a failure of the database, the log records may be still maintained. Log records stored to the non-volatile portion of the system memory may be identified as durably persisted, in some embodiments. Log records may be identified and sent to block-based storage, in some embodiments. Recovery from a database system failure, in some embodiments, by obtaining log records from the non-volatile portion of system memory.

Abstract: A system that implements a scaleable data storage service may maintain tables in a non-relational data store on behalf of clients. Each table may include multiple items. Each item may include one or more attributes, each containing a name-value pair. Attribute values may be scalars or sets of numbers or strings. The system may provide an API usable to request that values of one or more of an item's attributes be updated. An update request may be conditional on expected values of one or more item attributes (e.g., the same or different item attributes). In response to a request to update the values of one or more item attributes, the previous values and/or updated values may be optionally returned for the updated item attributes or for all attributes of an item targeted by an update request. Items stored in tables may be indexed using a simple or composite primary key.

Abstract: Images captured by a camera system of an unmanned aerial vehicle (UAV) can be used to determine a weather condition in an environment of the UAV. The camera system of the UAV can capture one or more images, and a characteristic of at least one image of the one or more images can be determined from image data associated with the at least one image. A weather condition of the environment of the UAV can be determined based at least in part on the characteristic of the at least one image.

Abstract: A technology is described for monitoring interaction events and scaling services based in part on an impact of the interaction events. An example method may include receiving metadata describing interaction events taking place at services included in a group of services executing in a computing service environment. The metadata may be analyzed to identify a first interaction load for a first service included in the group of services that may result in impacting a second interaction load for a second service included in the group of services. The second service may be notified of the impending impact on the second interaction load resulting from the first interaction load, and the second service may scale the number of second service instances for the second service in anticipation of the impending impact on the second interaction load.

Abstract: Disclosed are various embodiments for monitoring software computations of potentially arbitrary length and duration for event processing and related systems. A pattern of events describing user interaction with a client application or a network site may be received, where a virtual process is generated to match events received from various computing resources to the pattern. A self-healing watchdog process may be generated that, after a period of time, periodically checks a state of the virtual process relative to matching the pattern of events. Any detected anomalies may be stored in a delay queue and returned to the watchdog process after a period of time.

Abstract: This application describes techniques for correcting distortion in projected images. In some instances, a projection device may project an image onto a projection surface within an environment. However, the projected image may initially distorted from the perspective of a user within the environment due to the angle of the projection onto the surface and due to the location of the user relative to the projection. To help correct this distortion from the vantage point of the user, the user utilizes a mobile device to capture an image of the projection. This image is then used to calculate one or more calibration parameters for execution by the projection device to remove the distortion of the image as projected from the perspective of the user.

Abstract: A system may maintain a plurality of datasets within a fleet of memories subject to degraded operations caused by state transitions. A dataset maintained on one of the memories may be relocated to another memory. The dataset may be selected based on recorded observations that may be converted into a metric indicative of state transitions associated with maintaining a dataset. A dataset may be selected for relocation based on being associated with a high number of state transitions. The dataset may be relocated to a memory currently having a long operational lifetime relative to other memories in the fleet.