Patent · US Active

Elastic complex event processing

US9002823B2 · kind B2 · utility

4Cited by

2References

18Claims

0Family size

Assignee

SAP SE · DE

Inventors

Zbigniew Jerzak · Berlin, DE
Thomas Heinze · Finnentrop, DE
Yuanzhen Ji · Walldorf, DE

Key dates

Filing date	Jun 28, 2012
Grant date	Apr 7, 2015
Priority date	—
Expiry date	Mar 22, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/24568
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Systems and methods according to embodiments provide elasticity for complex event processing (CEP) systems. Embodiments may comprise at least the following three components: (1) incremental query optimization, (2) operator placement, and (3) cost explanation. Incremental query optimization allows avoiding simultaneous computation of identical results by performing operator-level query reuse and subsumption. Using automatic operator placement, a centralized CEP engine can be transformed into a distributed one by dynamically distributing and adjusting the execution according to unpredictable changes in data and query load. Cost explanation functionality can provide end users with near real-time insight into the monetary cost of the whole system, down to operator level granularity. Combination of these components allows a CEP system to be scaled up and down.

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