Abstract: Disclosed are various embodiments for browser-based payment for content. A first request for content is sent to a network content server. A response protocol header is received indicating that a payment is sought for the content in response to the first request. Payment manager code integral to a browser or a browser plug-in is executed in response to receiving the response protocol header. A payment-signifying token is received from a payment provider in response to consummating the payment. A second request for the content is sent to the network content server, where the second request includes a request protocol header specifying the payment-signifying token. The content is received from the network content server in response to the second request.

Abstract: A method and system for providing failovers for a primary cloud-based computing environment (CBCE) residing in a first cloud environment. The method includes gathering information with respect to the primary CBCE; storing the gathered information in a storage space; updating the stored information based on at least one change with respect to the primary CBCE; determining, based on at least one status received from the primary CBCE, whether a failover is required for the primary CBCE; and initiating a reconstruction of the primary CBCE in a second cloud environment, when it is determined that a failover is required for the primary CBCE, wherein the reconstruction of the CBCE is based on the stored information.

Abstract: An unsupervised keyword extraction process is disclosed. A single input document can be analyzed to identify multiple candidate keywords by utilizing splitting terms. A keyword score is calculated for each of the candidate keywords. The keyword score for a particular candidate keyword is determined based on the length of the candidate keywords that contain the candidate keyword and the frequency of the words appearing in the candidate keywords. One or more keywords having the highest keyword scores are selected as the extracted keywords. The extracted keywords can be used in applications, such as refining search results, providing suggested search terms, or improving the match rate of a network page at a search engine.

Abstract: A method is provided for estimating past data by identifying a high frequency data set for a defined time period. A pattern is calculated for the high frequency data set and then the pattern is applied to a low frequency data set in a past time period to estimate a high frequency query point.

Abstract: Speech processing tasks may be allocated at least partly to a local device (e.g., user computing device that receives spoken words) and at least partly to a remote device to determine one or more user commands or tasks to be performed by the local device. The remote device may be used to process speech that the local device could not process or understand, or for other reasons, such as for error checking. The local device may then execute or begin to execute locally determined tasks to reduce user-perceived latency. Meanwhile, the entire media input, or a portion thereof, may be sent to the remote device to process speech, verify the tasks and/or identify other user commands in the media input (or portion thereof).

Abstract: A request to cancel a change to a policy is received. Based at least in part on delay information for the change, determine that the change is currently delayed, where the delay information is associated with a condition precedent for the change to become effective under a policy change policy. A determination is made regarding whether cancellation is allowed by a set of conditions for the changes, and the proposed policy change is caused to be cancelled prior to a time indicated by the delay information.

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: Methods and apparatus for securing client-specified credentials at cryptographically-attested resources are described. An indication is obtained that resources deployed for execution of a compute instance of a multi-tenant computing service at an instance host of a provider network meet a client's security criteria. An encrypted representation of credentials to be used at the compute instance to implement operations on behalf of a client is received at the instance host. The credentials are extracted from the encrypted representation using a private key unique to the instance host, used for the operations, and then removed from the instance host without being saved in persistent memory.

Abstract: A frequency hopping communication system uses measured intensity values, such as RSSI (received signal strength indication) values, of RF signals previously received on a particular channel to generate a signal threshold that is tailored for the particular channel and is to be applied to subsequent frequency hopping processes. The signal threshold is used for determining whether a received RF signal is from an actual transmission or is merely background noise.

Abstract: A technology is described for processing video files using a software container. An example method may include dividing a video file into video segments and distributing the video segments to software containers which provide an isolated environment for a video processing application by creating a virtual container in which the processing application is contained. The video segments are then processed using the video processing application contained in the software containers, and the video file may be reconstructed using processed video segments output by the video processing application.

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: A computing device receives, from one or more user accounts in a group of user accounts, display information associated with presentation of data associated with a media item and generated in association with a first user account on user devices associated with the one or more user accounts in the group. The computing device generates a report comprising statistics associated with display of the data, wherein the statistics are determined from the display information and comprise an amount of time for which the data was presented on the user devices associated with the one or more user accounts in the group.

Abstract: Regions of memory in a distributed computing system may be synchronized. A first computing node may comprise a processor writing to a memory via a memory controller. A request to write data to the memory may be received by the memory controller. The memory controller may send a signal to a logic device which forwards the signal to other computing nodes in the distributed system. The memory controller may detect and respond to conflicting writes by instructing the computing nodes to overwrite conflicting memory regions with a data pattern indicative of the conflict.

Abstract: Disclosed are various embodiments for inhibiting or preventing automated data extraction from network pages. A source for a network page having a document structure is obtained. An obfuscated network page is generated from the network page by altering the document structure to inhibit automated extraction of data. The obfuscated network page is configured to have a visual appearance that is the same as that of the network page when rendered by a client for display. The obfuscated network page is sent to the client in response to a request from the client for the network page.

Abstract: Capacity utilization may be controlled by a token-based allocation of input/output capacity. Operations on nested objects may utilize capacity based on factors other than input/output capacity. A capacity utilization model may be used to scale input/output utilization associated with an operation on a nested object so that the scaled input/output utilization correlates to the computing capacity used performing the operation on the nested object. The correlation may be determined to be valid for a range of attributes associated with the operation.

Abstract: A configurable sponge function engine. The configurable engine includes a register having bitrate and capacity sections, each having a variable size, where a sum of the bitrate and capacity sizes is fixed. A controller generates a bitrate size indication. A configurable message processor receives an input message from an input bus, receives the size indication, fragments the input message into fragmented blocks of a size specified by the size indication, and converts the blocks to a bus width of the bitrate and capacity sizes. An iterative calculator receives the blocks, performs iterative processing operations on the blocks, and stores a result of each operation in the register overwriting a previous register value. An output adaptor receives a value stored in the register after the block corresponding to the end of the input message is processed and outputs the register value converted to have an output bus width.