Meeting subscriber‐defined QoS constraints in publish/subscribe systems

2013 Conference on Networked Systems

Rotherme³

et al. 2013

Current event processing systems lack methods to preserve privacy constraints of incoming event streams in a chain of subsequently applied stream operations. This is a problem in large-scale distributed applications like a logistic chain where event processing operators may be spread over multiple security domains. An adversary can infer from legally received outgoing event streams confidential input streams of the event processing system. This paper presents a finegrained access management for complex event processing. Each incoming event stream can be protected by the specification of an access policy and is enforced by algorithms for access consolidation. The utility of the event processing system is increased by providing and computing in a scalable manner a measure for the obfuscation of event streams. An obfuscation threshold as part of the access policy allows to ignore access requirements and deliver events which have achieved a sufficient high obfuscation level.

“…[10], [11], [9], [12], [13]. For our approach it is only important to understand that each consumer ω c needs to request required event attributes.…”

Section: Policy Consolidation and Event Obfuscationmentioning

confidence: 99%

Access Policy Consolidation for Event Processing Systems

Schilling

2013 Conference on Networked Systems

Rotherme³

et al. 2013

“…Filter operations [23,27,32] allow for reuse with respect to containment relations. For instance, in distributed publish/subscribe systems routing paths are merged if filters overlap.…”

Section: Related Workmentioning

confidence: 99%

Recep

Ottenwälder

Proceedings of the 8th ACM International Conference on Distributed Event-Based Systems

Rothermel

et al. 2014

Self Cite

An appealing use case of complex event processing (CEP) systems is for mobile users to react in real-time to events in their environment, e.g., to the occurrence of a dangerous situation such as an accident. Maintaining mobile CEP systems is highly resource intensive since in many cases events need to be detected in a consumer-centric manner to ensure low latency event detection and high quality of results. In this paper we propose the RECEP system to increase the scalability of mobile CEP systems. In the presence of mobile users with partially overlapping interest, the RECEP system offers methods to efficiently reuse computations and this way reduces the resource requirements of mobile CEP. Since reuse of computations happens with respect to well defined quality metrics, RECEP can be easily tailored to specific mobile applications and maximize the resource savings for their desired quality in terms of precision and recall of the processed events from the user's environment.

“…In publish/subscribe systems, (e.g. [2,19,8,25]), saving bandwidth is commonly achieved by installing filters inside the network. Filtering is performed by specific components called brokers which are placed inside the network and mediate events between subscribers and publishers.…”

Section: Introductionmentioning

confidence: 99%

Pleroma

Tariq

Proceedings of the 15th International Middleware Conference on - Middleware '14

Bhowmik

et al. 2014

Self Cite

With the increasing popularity of Software-defined networks (SDN), TCAM memory of switches can be directly accessed by a publish/subscribe middleware to perform filtering operations at low latency. This way two important requirements for a publish/subscribe middleware can be fulfilled: namely bandwidth efficiency and line-rate performance in forwarding messages between producers and consumers. Nevertheless, it is challenging to sustain line-rate performance in the presence of dynamic changes in the interest of producers and consumers. In this paper, we propose and evaluate the PLEROMA middleware to realize publish/subscribe at linerate and bandwidth efficiently in SDN. PLEROMA offers methods to efficiently reconfigure a deployed topology in the presence of dynamic subscriptions and advertisements. Furthermore, PLEROMA ensures interoperability and independent reconfiguration of multiple controlled SDN networks.