Patent · US Active

Active invalidation of metadata cache entries

US12210527B2 · kind B2 · utility

0Cited by

0References

12Claims

0Family size

Assignee

Snowflake Inc. · US

Inventors

Benoit Dageville · Foster City, US
Lyuping Du · Issaquah, US
Martin Hentschel · Berlin, DE
Elkhan Mammedov · Berlin, DE
Lukas Moll · Berlin, DE
Vikram Wakade · Sammamish, US

Key dates

Filing date	Mar 29, 2023
Grant date	Jan 28, 2025
Priority date	—
Expiry date	Mar 29, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/2365
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Techniques for active invalidation of cache entries are described. A first timestamp and a second timestamp are stored by a compute instance, the first timestamp corresponding to an initial time the computing instance read from a version update log in a database and the second timestamp corresponding to a last time the computing instance read from the version update log in the database. The compute instance can read records from the version update log that are associated with version timestamps greater than the second timestamp. The compute instance can invalidate a first set of cache entries with older versions stored in a cache based on reading the records, retaining a second set of cache entries, and then execute a query using the second set of cache entries.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.