Abstract: A system, method, and computer-readable medium for updating request routing information associated with client location information are provided. A content delivery network service provider receives a DNS query from a client computing device. The DNS query corresponds to a resource identifier for requested content from the client computing device. The content delivery network service provider obtains a query IP address corresponding to the client computing device. Based on routing information associated with the query IP address, the content delivery network service provider routes the DNS query. The process further includes monitoring performance data associated with the transmission of the requested resource and updating routing information associated with the query IP address based on the performance data for use in processing subsequent requests form the client computing device.

Abstract: A system, method, and computer readable medium for managing resources maintained in resource cache components are provided. A network storage provider storing one or more resources on behalf of a content provider obtains client computing device requests for content. The network storage provider provides resources that are received and maintained on resource cache components. The network storage provider either processes requests or provides notifications to the resource cache components to facilitate the management of resources that need to be updated or are otherwise treated as invalid.

Abstract: Techniques are described for managing communications between multiple computing nodes, such as computing nodes that are separated by one or more physical networks. In some situations, the techniques may be used to provide a virtual network between multiple computing nodes that are separated by one or more intermediate physical networks, such as from the edge of the one or more intermediate physical networks by modifying communications that enter and/or leave the intermediate physical networks. In some situations, the computing nodes may include virtual machine nodes hosted on one or more physical computing machines or systems, such as by or on behalf of one or more users (e.g., users of a program execution service). The managing of the communications may include determining whether communications sent to managed computing nodes are authorized, and providing the communications to the computing nodes only if they are determined to be authorized.

Abstract: Techniques are described for providing users with access to computer networks, such as to enable users to interact with a remote configurable network service in order to create and configure computer networks that are provided by the configurable network service for use by the users. Computer networks provided by the configurable network service may be configured to be private computer networks that are accessible only by the users who create them, and may each be created and configured by a client of the configurable network service to be an extension to an existing computer network of the client, such as a private computer network extension to an existing private computer network of the client. If so, secure private access between an existing computer network and new computer network extension that is being provided may be enabled using one or more VPN connections or other private access mechanisms.

Abstract: A method for moving one or more mobile drive units within a workspace includes receiving, from a first mobile drive unit, a reservation request requesting use of a first path segment to move in a first direction. The method further includes determining that a second mobile drive unit is currently located on the first path segment and determining whether the second mobile drive unit is moving in the first direction. Additionally, the method includes transmitting a reservation response indicating that the reservation request is denied, in response to determining that the second mobile drive unit is not moving in the first direction. The method also includes transmitting a reservation response indicating that the reservation request is granted, in response to determining that the second mobile drive unit is moving in the first direction.

Abstract: A user of a personal computing device may identify an item of interest provided by a network-based service for which additional information is desired. Customer service agents (CSAs) of the network-based service may be contacted by the user to respond to queries. To assess the quality of a contact, a contact review service may record the contact between the CSA and the user and edit the contact to reduce its length for ease of review. The edited contact may be submitted to one or more reviewers to obtain reviews characterizing the contact quality. Reviewers may include CSAs not participating in the contact or other human reviewers. The reviewers may return their reviews to the contact review service, which generates a composite review from the returned reviews. The composite review may be employed for CSA evaluation and/or training purposes, amongst others.

Abstract: A system includes electrical components, a chassis assembly that encloses the electrical components, one or more chassis connectors coupled to the chassis assembly, and two or more cable connection panels. The cable connection panels interchangeably couple with the chassis assembly. The cable connection panels hold one or more cables relative to the chassis assembly such that the conductors of the cables can electrically couple to the chassis connectors. At least two of the cable connection panels can couple a cable having a different end configuration than at least one other of the cable connection panels.

Abstract: Disclosed are various embodiments for employing an erasure coding storage scheme and a redundant replication storage scheme in a data storage system. Data objects that are greater than a size threshold and accessed less frequently than an access threshold are stored in an erasure coding scheme, while data objects that are sized less than a size threshold or accessed more often than an access threshold are stored in a redundant replication storage scheme.

Abstract: A method and system for transit characteristic prediction. In one embodiment, a method may include determining respective transit latencies from a source location to a number of destination locations, and grouping the destination locations according to a fitness function into a number of subsets corresponding to respective geographical regions. The grouping may involve a series of divisions and combinations of potential regions to form a plurality of sets of potential regions. Each set of potential regions may be evaluated using the fitness function, and the set with the better fitness score may be selected. The method may also include dynamically updating the respective transit characteristic, regrouping the regions, and reselecting a set of potential regions based on empirical transit data.

Abstract: Methods, systems and computer program products are disclosed for collecting and providing long-term reviews for items such as products and services. In an exemplary method, a first review for an item may be received from a reviewer over a communications network. A determination may be made as to when the reviewer will be a long-term reviewer for the item. After the reviewer is a long-term reviewer for the item, a second review for the item may be requested, and such a second review for the item may be received from the reviewer in response to this request. A request to view reviews for the item may also be received, and both the first and second reviews may be provided in response to this request.

Abstract: A Short Message Service (“SMS”) provider's quality of service, such as SMS transmission latency and/or success rate, is measured based on collected event data. A notification service initiates SMS message transmissions which are sent through an SMS provider and a carrier before reaching a mobile service on a mobile device. Each SMS message includes a unique identifier. The notification service creates send events recording when each SMS message was sent. The mobile service creates receipt events recording when each received SMS message was received. By determining how many sent messages are received, and aggregated time differences between messages being sent and received, quality of service information can be determined. In some embodiments, quality of service information is determined on a per-SMS provider basis, and/or on a per-location basis.

Abstract: Disclosed are various embodiments for facilitating access to data in network page generation code supplied by customers of a hosting provider. A request for a network page is obtained from a client. The network page is associated with a network site hosted by a hosting provider on behalf of a customer. Page generation code supplied by the customer is obtained, and this code includes a dynamic data variable. One or more service calls are executed based at least in part on the dynamic data variable to obtain one or more data objects. The page generation code is executed to generate the network page in response to the request, where the page generation code is executed with the data objects in place of the dynamic data variable.

Abstract: Disclosed are various embodiments for automated service interface optimization. A plurality of usage metrics for at least one service client corresponding to a set of data items within a data object are determined in at least one computing device. The data object is obtainable by at least one service client from a service provider. The service provider is configured to provide an optimized data object to the at least one service client. The optimized data object includes a proper subset of the set of data items. The proper subset is determined based at least in part on the usage metrics.

Abstract: Various embodiments of a system and method for diminishing workload imbalance across multiple database systems are described. Embodiments may include a resource balancer configured to, for each of a multiple database systems hosting database resources assigned to different user entities, generate a system usage score for that database system based on database usage scores of respective database resources hosted by that database system. Each usage score of a given database resource may indicate a quantity of work performed by the respective database system to process one or more requests directed to that database resource. The resource balancer may also be configured to generate one or more instructions to move a database resource from a first database system having a first system usage score to a second database system having a smaller system usage score in order to diminish an imbalance of workload across the database systems.

Abstract: Technologies are described herein for generating container plans for multi-item orders. The items of the order are divided into zones, where the zones may determine the picking zone and/or packaging requirements for the item. Zone-based container plans are generated for the items in the order associated with each individual zone. The container plan includes an assignment of each item to one or more logical shipping containers. A mixed container plan is also generated for all the items in the order regardless of the associated zone. If the number of logical shipping containers in the mixed container plan is less than the total number of logical shipping containers in the zone-based container plans, then a final container plan for the order is generated from the mixed container plan. Otherwise, the final container plan is generated by combining the zone-based plans for each zone associated with items in the order.

Abstract: An online data storage arrangement (or a collection of “digital lockers”) allows online users to share data with other online users. Digital lockers may include a number user created content objects and view objects. A content object comprises a link to one or more data objects that a user may wish to share with others. Such a content object may specify a plurality of permissions that manage what a user can or cannot do with the content object. A content object's permissions may dictate use of the content object when it is shared with other users. A view object is a medium that may be used to share content objects. A user may create a view object that references or includes one or more content objects. Users having authorized access to the view object may use the referenced/included content objects.

Abstract: A service is disclosed for enabling web sites and other entities to provide item recommendations and other behavior-based content to end users. The service can be implemented as a web service that is remotely accessible over the Internet. Web sites use the web service's interface to report events descriptive of item-related actions performed by end users (e.g., item views, item purchases, searches for items, etc.). The web service analyzes the reported event data on an aggregated basis to detect various types of associations between particular items, and stores resulting datasets that map items to associated items. The web service's interface also provides various API calls for enabling the web sites to request item recommendations and other behavior-based content, including but not limited to personalized recommendations that are based on the event history of the target user. Advantageously, the web sites need not host the infrastructure for providing such content.

Abstract: Systems and methods for providing object versioning in a storage system may support the logical deletion of stored objects. In response to a delete operation specifying both a user key and a version identifier, the storage system may permanently delete the specified version of an object having the specified key. In response to a delete operation specifying a user key, but not a version identifier, the storage system may create a delete marker object that does not contain object data, and may generate a new version identifier for the delete marker. The delete marker may be stored as the latest object version of the user key, and may be addressable in the storage system using a composite key comprising the user key and the new version identifier. Subsequent attempts to retrieve the user key without specifying a version identifier may return an error, although the object was not actually deleted.

Abstract: Systems and methods for authenticating a request submitted from a client device through a third party content provider to an electronic entity are described. In one embodiment, a method includes providing a trusted script to the third party content provider, passing a trust token to the third party content provider and to the client device, and, in response to a request submitted from the client device through the third party content provider, validating the trust token associated with the request with the token passed to the client device, and processing the request. The trusted script is configured to create a trusted window on the third party Web page displayed on the client computing device, receive a trust token from the electronic entity through the trusted window, and associate the trust token with requests submitted from the client computing device through the third party content provider to the electronic entity.

Abstract: A system for allocating constrained resources (e.g., downstream services, execution threads, database connections, input/output channels, computational resources, and/or memory) to requested services that are dependent on those resources may include multiple resource queues, each of which maintains a queue of requests for a respective constrained resource, and multiple service request queues, from which requests may be subsequently serviced. As each request reaches the head of a resource queue, it may receive a resource token for a respective constrained resource. Once the request has collected resource tokens for each of the constrained resources on which it depends, the request may be passed to a service request queue that maintains a queue of requests of a particular type. Requests in the multiple service request queues may be serviced on a round-robin or weighted round-robin basis. The number of tokens available for each constrained resource may be modified based on observed system performance.