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:
Mar. 14, 2017
Filed:
Oct. 29, 2013
Frank Feng-chun Chiang, Brighton, MA (US);
Ashkan Nasseri, Somerville, MA (US);
Frank Feng-Chun Chiang, Brighton, MA (US);
Ashkan Nasseri, Somerville, MA (US);
Apperian, Inc., Boston, MA (US);
Abstract
A web server cache performs verification of cached computational results by storing a computed function result as a cached value in a cache, and upon receiving a subsequent invocation of the function, examining a duration of the value in the cache. The web server compares, if the duration exceeds a staleness detection threshold, a result of a subsequent execution of the function to the cached value in response to the subsequent invocation by recomputing, a result from execution of the function for validating the cached value, and flags an error if the duration exceeds the staleness detection threshold and the result differs from the cached value. Alternatively, the method returns, if the duration of the cache value is within the staleness detection threshold, the cache value as the result of the subsequent invocation.