WebLogic event server: a lightweight, modular application server for event processing

ABSTRACT

This paper describes WebLogic Event Server (WL EvS), an application server designed for hosting event-driven applications that require low latency and deterministic behavior. WL EvS is based on a modular architecture in which both server components and applications are represented as modules. The application programming model supports applications that are a mixture of reusable Java components and EPL (Event Processing Language), a query language that extends SQL with stream processing capabilities. WL EvS applications are meta-data driven, in that application behavior can be changed without recompilation or redeploying an application. The paper also presents the results of a benchmark performance study. The results show that the approach used by WL EvS can handle extremely high volumes of events while providing deterministic latency.

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INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.4 Distributed Systems

General Terms:
Algorithms, Design, Performance

Keywords:
Java, OSGi, Spring, application server, complex event processing, stream processing