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    Management of alternative resources
    3.
    发明授权
    Management of alternative resources 有权

    公开(公告)号：US10805238B1

    公开(公告)日：2020-10-13

    申请号：US15275300

    申请日：2016-09-23

    Applicant: Amazon Technologies, Inc.

    Inventor： Christopher Richard Jacques de Kadt ,  Benjamin Warren Mercier ,  Carlos Vara Callau ,  Timothy Daniel Cole ,  Aaron Gifford Freshwater ,  Sayantan Chakravorty ,  Allan Henry Vermeulen

    IPC: H04L12/911 ,  H04L29/08

    Abstract: A journal service maintains a journal that holds a number of journal entries. Access to the journal entries is controlled by providing a lead resource with access to a named role associated with the journal. A pool of alternate resources containing potential replacements for the lead resource is maintained. A succession order may be established for the pool of alternate resources, and individual resources in the pool of alternate resources may be managed based at least in part on their position within the succession order. The succession order may be established using various criteria that are indicative of a likelihood that a particular alternate resource will be available if the lead resource fails, such as the presence of shared points of failure between the current lead resource and an alternate resource. The lead resource may be replaced with an alternate resource as a result of various impeachment events.

    Live migration of log-based consistency mechanisms for data stores
    5.
    发明授权
    Live migration of log-based consistency mechanisms for data stores 有权

    公开(公告)号：US11240302B1

    公开(公告)日：2022-02-01

    申请号：US15184925

    申请日：2016-06-16

    Applicant: Amazon Technologies, Inc.

    Inventor： Carlos Vara Callau

    IPC: H04L29/08 ,  G06F3/06

    Abstract: Live migration of log-based consistency mechanisms may be implemented for data stores. A log describing changes to replicas of data maintained at different nodes may be implemented in different ways. While the nodes are available for servicing access requests, a migration of consistent maintained between one instance of a log and a different instance of the log may be performed. A change may be committed to the current instance of the log identifying the new instance of the log as describing changes to the log subsequent to the migration. Upon completing migration, the data may be consistently maintained according to the different instance of the log.

    Resource manager
    6.
    发明授权
    Resource manager 有权

    公开(公告)号：US10423459B1

    公开(公告)日：2019-09-24

    申请号：US15275302

    申请日：2016-09-23

    Applicant: Amazon Technologies, Inc.

    Inventor： Christopher Richard Jacques de Kadt ,  Benjamin Warren Mercier ,  Carlos Vara Callau ,  Timothy Daniel Cole ,  Aaron Gifford Freshwater ,  Sayantan Chakravorty ,  Allan Henry Vermeulen

    IPC: G06F9/46 ,  G06F9/50

    Abstract: A resource manager arranges the resources in a computer system into one or more resource pools. The resource manager allocates a number of active resources and a number of backup resources to a particular resource pool. For each resource managed by the resource manager, the resource manager acquires information that describes the capacity and reliability of the resource. Capacity and reliability information for the particular resource pool is determined based on the capacity and reliability information associated with the resources assigned to the pool. In response to a request, the resource manager may provide an application with resources from several resource pools. The likelihood that the resource manager will be able to provide sufficient resources to the application may be determined based at least in part on the reliability information associated with the several resource pools.

    Management of a data processing pipeline
    7.
    发明授权
    Management of a data processing pipeline 有权

    公开(公告)号：US10346366B1

    公开(公告)日：2019-07-09

    申请号：US15275307

    申请日：2016-09-23

    Applicant: Amazon Technologies, Inc.

    Inventor： Christopher Richard Jacques de Kadt ,  Benjamin Warren Mercier ,  Carlos Vara Callau ,  Timothy Daniel Cole ,  Aaron Gifford Freshwater ,  Sayantan Chakravorty ,  Allan Henry Vermeulen

    IPC: G06F16/18 ,  G06F16/23 ,  H04L12/18

    Abstract: A pipeline management service improves the operation of a processing pipeline by monitoring the operation of one or more journal services within the processing pipeline, and adjusting operational parameters of the one or more journal services. In various examples, the pipeline management service determines a model of the processing pipeline by identifying the producers and consumers associated with each of the one or more journal services, and determines a processing flow through the one or more journal services based at least in part on the identities of the associated producers and consumers. The pipeline management service acquires backlog information from each of the one or more journal services, and may adjust the operational parameters of a journal service associated with an identified processing bottleneck. In some examples, the pipeline management service adjusts capacity and reliability parameters of the one or more journal services to improve the operation of the processing pipeline.

    Availability of a distributed application using diversity scores
    9.
    发明授权
    Availability of a distributed application using diversity scores 有权

    公开(公告)号：US10601683B1

    公开(公告)日：2020-03-24

    申请号：US15382856

    申请日：2016-12-19

    Applicant: Amazon Technologies, Inc.

    Inventor： Rohit Kulshreshtha ,  Christopher Richard Jacques de Kadt ,  Carlos Vara Callau

    IPC: H04L29/08 ,  G06F11/00 ,  H04L12/24 ,  G06F11/07 ,  G06F11/20 ,  G06F9/50

    Abstract: Technologies are disclosed for improving the availability of a distributed application by computing scores for the application that indicate the extent to which the configuration of hosts implementing the application complies with best practices for maximizing availability. One score can be generated for the application based upon the physical location of the hosts used to implement the application and the components upon which the application is dependent. Another score can be generated for the application based upon the number of data centers that hosts executing the application are located in as compared to a minimum required number of data centers. Another score can be generated for the application based upon the distribution of hosts utilized to execute the application across data centers. Operations can be initiated for improving the scores, such as migrating a host to a new rack or server, or migrating a host to a different data center.

    Poison pill prevention for consensus protocols
    10.
    发明授权
    Poison pill prevention for consensus protocols 有权

    公开(公告)号：US10331511B1

    公开(公告)日：2019-06-25

    申请号：US14625504

    申请日：2015-02-18

    Applicant: Amazon Technologies, Inc.

    Inventor： Carlos Vara Callau

    IPC: G06F11/07

    Abstract: A distributed system uses a consensus protocol to maintain a data set shared by nodes of the distributed system. When a change is proposed to the data set, the change must pass multiple tests, including a test regarding the validity of the proposed change according to the consensus protocol and a test regarding the validity of the proposed change according to an application that utilizes the data set. As a result, poison pills that could harm operation of the distributed system are prevented from being accepted, regardless of whether such poison pills would satisfy any conditions of the consensus protocol.

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