The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2023
Filed:
Jun. 01, 2021
Applicant:
Alibaba Singapore Holding Private Limited, Singapore, SG;
Inventors:
Rui Wang, Redmond, WA (US);
Qingda Lu, Bellevue, WA (US);
Zhu Pang, Bellevue, WA (US);
Shuo Chen, Bellevue, WA (US);
Jiesheng Wu, Redmond, WA (US);
Assignee:
Alibaba Singapore Holding Private Limited, Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 16/20 (2019.01); G06F 12/02 (2006.01); G06F 16/23 (2019.01); G06F 16/215 (2019.01); G06F 16/245 (2019.01);
U.S. Cl.
CPC ...
G06F 12/0269 (2013.01); G06F 16/215 (2019.01); G06F 16/2379 (2019.01); G06F 16/245 (2019.01); G06F 2212/1044 (2013.01);
Abstract
A key-value engine may perform garbage collection for a tree or hierarchical data structure on an append-only storage device with page mappings. The key-value engine may separate hot and cold data to reduce write amplification, track extent usage using a restricted or limited amount of memory, efficiently answer queries of valid extent usage, and adaptively or selectively defragment pages in snapshots in rounds of garbage collection.