公开(公告)号：US11842085B1

公开(公告)日：2023-12-12

申请号：US17710444

申请日：2022-03-31

Applicant: Amazon Technologies, Inc.

Inventor： Induja Sreekanthan ,  Sriram Subramanian ,  Athanasios Papathanasiou ,  Vijayan Prabhakaran

IPC: G06F3/06

CPC classification number: G06F3/0683 ,  G06F3/061 ,  G06F3/064 ,  G06F3/0647

Abstract: Methods for modeling performance of tiered storage of a data processing service given an increase in the storage capacity of a warm storage tier of the tiered storage are disclosed. Buffers in the warm storage tier are used to store data block identifiers corresponding to a set of data blocks that would be stored in the warm storage tier given the increase in storage capacity in addition to those already stored in the warm storage tier. When an incoming query targets a data block that has a corresponding data block identifier in one of the buffers, a hit counter is incremented in order to track the hit rate that would be made on the up-sized warm storage tier. In response to adding the data block targeted by the query to the warm storage tier, one or more evictions from the warm storage tier may additionally be triggered.

公开(公告)号：US12216653B1

公开(公告)日：2025-02-04

申请号：US17710476

申请日：2022-03-31

Applicant: Amazon Technologies, Inc.

Inventor： Induja Sreekanthan ,  Sriram Subramanian ,  Athanasios Papathanasiou ,  Vijayan Prabhakaran

IPC: G06F15/16 ,  G06F16/2453

Abstract: Methods for improving performance of tiered storage of a data processing service by detecting and reducing thrashing of data blocks between warm and cold storage tiers are disclosed. In order to understand the frequency of hits by incoming queries to data blocks that are not currently stored in the warm storage tier, the elapsed time between query hits to the respective data blocks may be tracked using timers. Times below a given amount of time may be used to indicate thrashing. For example, recently evicted data blocks that are subsequently hit by a query within a short amount of time since eviction may indicate thrashing. In scenarios in which thrashing may be occurring, a threshold corresponding to the number of times a given data block in the cold storage tier receives a query hit before being added to the warm storage tier may be turned on.

公开(公告)号：US11757848B1

公开(公告)日：2023-09-12

申请号：US17356069

申请日：2021-06-23

Applicant: Amazon Technologies, Inc.

Inventor： Jan Zieh ,  Musachy Barroso ,  Lokesh Joshi ,  Mark David Van Hamersveld ,  Jeffrey Gerard Rodrigues ,  Mohammad A. Kanso ,  Manigandan Natarajan ,  Sriram Subramanian

IPC: H04L9/40 ,  G06T11/20 ,  G06F21/62 ,  H04L67/10

CPC classification number: H04L63/0428 ,  G06F21/6218 ,  G06T11/203 ,  H04L63/102 ,  H04L67/10

Abstract: Users access content using a variety of formats, where some formats provide stronger encryption or protections than others. Content transmitted over open protocols may expose content to unauthorized third parties or enable unauthorized use of the content. The content may be protected by converting the content to a set of instructions on a user device, where the instructions correlate characters to identifications and outlines of the characters with instructions for rendering the characters. Different segments of content may have different mappings between characters, identifications, and outlines to add time or resource use to attempts to reverse engineer the instructions.