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:
Oct. 10, 2023
Filed:
Jul. 23, 2021
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Sirisha Kaipa, Cupertino, CA (US);
Madhura Srinivasa Raghavan, Milpitas, CA (US);
Neha R. Naik, Fairview, PA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Providing cache updates in a multi-node system through a service component between a lower level component and a next higher level component by maintaining a ledger storing an incrementing number indicating a present state of the datasets in a cache of the lower level component. The service component receives a data request to the lower level component from the higher level component including an appended last entry number accessed by the higher level component. It determines if the appended last entry number matches a current entry number in the ledger for any requested dataset. No match indicates that some data in the higher level component cache is stale. It then sends updated information for the stale data to the higher level component. The higher level component invalidates its cache entries and updates the appended last entry number to match a current entry number in the ledger.