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:
May. 17, 2022
Filed:
Jan. 22, 2021
Oracle International Corporation, Redwood Shores, CA (US);
Rishi Mutnuru, San Jose, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
Round-trip times (RTT) values are estimated between meshed data centers serving an internet domain and a local domain name server (LDNS) associated with the data centers. A method initializes a shared database with proactively estimated RTTs and uses distributed DNS reflection to improve the accuracy of an estimated RTT value and update the shared database. RTTs may be proactively estimated by using pings, queries, or local DNS reflection. In local DNS reflection, a reflector sends a request to a collector in the same data center via the LDNS, and the collector measures the RTT. In distributed DNS reflection, a reflector in a first data center sends a request to a collector in a second data center via the LDNS. The collector calculates the latency, retrieves the (first) RTT between the first data center and the LDNS, and calculates the (second) RTT between the second data center and the LDNS by doubling the difference between the latency and half the first estimated RTT.