Distributed state recovery in a system having dynamic reconfiguration of participating nodes
US11153413B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Oct 21, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5635
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for obtaining previously stored session state data for a session between a system having a plurality of nodes and a client device includes obtaining a session identifier specifying the session and hashing the session identifier. A currently valid hash map is searched. The hash map maps a hash of the session identifier to the nodes for a current system configuration. The search is performed to identify a system node on which the session state data for the session is stored. If the session state data is not located using the currently valid hash map, at least one earlier generation hash map that is valid for a previous configuration of the system is searched. Upon identifying the system node on which the session state data is stored, the session state data from the system node is retrieved. The session state data is used to establish the session.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.