GREEN: A Configurable and Re-configurable Publish-Subscribe Middleware for Pervasive Computing

Sivaharan, Thirunavukkarasu; Blair, Gordon S.; Coulson, Geoff

doi:10.1007/11575771_46

Cited by 69 publications

(41 citation statements)

References 33 publications

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“…CPS middleware systems typically construct content-based publish/subscribe networks (CPSNs) to connect publishers with the appropriate subscribers, performing content-based routing and filtering in a decentralized manner over intermediate broker nodes. Examples of CPS middleware are Siena [10] [9], HERMES [28], REBECA [19], Gryphon [3], PADRES [23] [24],GREEN [32], XSiena [36] and JEDI [15]. The current standard approach views event content as sets of attribute-value pairs, and subscriptions as * Research partially funded by US NSF (grants 0644013 and 0834529).…”

Section: A Content-based Publish/subscribe (Cps)mentioning

confidence: 99%

Split and Subsume: Subscription Normalization for Effective Content-Based Messaging

Jayaram

Eugster

2011

2011 31st International Conference on Distributed Computing Systems

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Abstract-Content-based publish/subscribe networks (CPSNs) scale to large numbers of publishers and subscribers by having brokers summarize subscriptions from subscribers and downstream brokers based on coverage relationships ("subsumption") between subscriptions. A broker forwards the summary to brokers which are upstream on the routes to the publishers. Current summarization and event processing mechanisms induce heavy event processing load on brokers, leading to low event throughput and high latency and further sharp performance degradation under high rates of churn, i.e., addition, deletion, or modification of subscriptions. This paper describes Beretta, a novel CPSN that leverages a simple model of typed events, enabling a succinct and uniform normalized representation of subscriptions. This in turn supports highly effective subsumption and attribute-wise split filtering with matching complexity logarithmic in the number of subscriptions, and enables the systematic introduction of parameters into subscriptions to support both parametric and structural updates. We empirically demonstrate that our techniques significantly improve throughput and latency of event propagation and reduce response times to subscription updates.

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Section: A Content-based Publish/subscribe (Cps)mentioning

confidence: 99%

Split and Subsume: Subscription Normalization for Effective Content-Based Messaging

Jayaram

Eugster

2011

2011 31st International Conference on Distributed Computing Systems

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“…Identifying this latter kind of capp is important because the majority of context-aware applications run in a multi-threaded environment to handle asynchronous context change events [16,19,25]. We use two known program analysis techniques to recognize the capps: side-effect analysis and escape analysis.…”

Section: Capps Identifiermentioning

confidence: 99%

Automated Generation of Context-Aware Tests

Wang

Elbaum

Rosenblum

2007

29th International Conference on Software Engineering (ICSE'07)

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“…Cugola and Picco [7] address issues of overlay and routing configurability by implementing a modular system architecture customizable at deployment time. Sivaharan et al [8] present a component-based framework that allows pub/sub systems to easily cope with the diversity of mobile and heterogeneous network environments. Both are flexible systems that can be reconfigured with different pub/sub semantics as necessary.…”

Section: Related Workmentioning

confidence: 99%

“…Although the general CPS model is well understood, many CPS feature details still remain non-standardized for the good reason that different application scenarios have different requirements. While some CPS features can be addressed with system reconfigurability [7,8], others are more suitably expressed in policies that separate application requirements from infrastructure mechanisms [9,10]. For example, advanced features such as notification semantics, meta-events, security zoning, and CPS firewalls are appropriate for being realized as policies.…”

Section: Introductionmentioning

confidence: 99%

A Policy Management Framework for Content-Based Publish/Subscribe Middleware

Wun¹,

Jacobsen²

2007

Lecture Notes in Computer Science

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Abstract. Content-based Publish/Subscribe (CPS) is a powerful paradigm providing loosely-coupled, event-driven messaging services. Although the general CPS model is well-known, many features remain implementation specific because of different application requirements. Many of these requirements can be captured in policies that separate service semantics from system mechanisms, but no such policy framework currently exists in the CPS context. In this paper, we propose a novel policy model and framework for CPS systems that benefits from the scalability and expressiveness of existing CPS matching algorithms. In particular, we provide a reference implementation and several evaluation scenarios that demonstrate how our approach easily and dynamically enables features such as notification semantics, meta-events, security zoning, and CPS firewalls.

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GREEN: A Configurable and Re-configurable Publish-Subscribe Middleware for Pervasive Computing

Cited by 69 publications

References 33 publications

Split and Subsume: Subscription Normalization for Effective Content-Based Messaging

Split and Subsume: Subscription Normalization for Effective Content-Based Messaging

Automated Generation of Context-Aware Tests

A Policy Management Framework for Content-Based Publish/Subscribe Middleware

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