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. 28, 2017
Filed:
May. 18, 2015
Facebook, Inc., Menlo Park, CA (US);
Jason McHugh, Seattle, WA (US);
Michael Pechuk, Sammamish, WA (US);
Facebook, Inc., Menlo Park, CA (US);
Abstract
The disclosed online system includes a number of processing blocks, including a feeding service that sends a data stream and a consuming service that receives a data stream, without sending back acknowledgements for the data (i.e., 'nontransactional'). The system handles failure in the feeding service and/or the consuming service by adding reference points into the data stream and backing up a current sum that is maintained by the consuming service. Upon a failure of the consuming service, the system obtains the last reference point, restores the backup copy of the database, and starts reading the backup copy from that check point. To address a failure of the feeding service, the feeding service creates an identifier for each message in the data stream, and upon failure, the consuming service checks for messages that have the same identifier within a specified period of time, and discards any duplicate messages.