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Software architecture design for streaming java rmi

SCIENCE OF COMPUTER PROGRAMMING 2008年第2-3期70卷 168-184页

作者： Yang, Chih-Chieh Chen, Chung-Kai Chang, Yu-Hao Chung, Kai-Hsin Lee, Jenq-Kuen Natl Tsing Hua Univ Dept Comp Sci Hsinchu 30013 Taiwan

In recent years, network streaming becomes a highly popular research topic in computer science due to the fact that a large proportion of network traffic is occupied by multimedia streaming. In this paper we present novel methodologies for enhancing the streaming capabilities of java rmi. Our streaming support for java rmi includes the pushing mechanism, which allows the servers to push data in a streaming fashion to the client site, and the aggregation mechanism, which allows the client site to make a single remote invocation to gather data from multiple servers that keep replicas of data streams and aggregate partial data into a complete data stream. In addition, our system also allows the client site to forward local data to other clients. Our framework is implemented by extending the java rmi stub to allow custom designs for streaming buffers and controls, and by providing a continuous buffer for raw data in the transport layer socket. This enhanced framework allows standard java rmi services to enjoy streaming capabilities. In addition, we propose aggregation algorithms as scheduling methods in such an environment. Preliminary experiments using our framework demonstrate its promising performance in the provision of streaming services in java rmi layers. (C) 2008 Published by Elsevier B.V.

关键词： java rmi streaming java rmi aggregation scheduling methods novel applications of java java-based tools

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An architectural view of distributed objects and components in CORBA, java rmi and COM/DCOM

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SOFTWARE-CONCEPTS AND TOOLS 1998年第1期19卷 14-28页

作者： Plasil, F Stal, M Charles Univ Fac Math & Phys Dept Software Engn Prague 11800 1 Czech Republic Siemens AG Corp Technol Dept ZT SE 1 D-80312 Munich Germany

The goal of this paper is to provide an architectural analysis of the existing distributed object oriented platforms. Based on a relatively small number of design patterns, our analysis aims at a unified view of the platforms. We achieve this by articulating a series of key issues to be addressed in analyzing a particular platform. This approach is applied systematically to the CORBA, java rmi and COM/DCOM platforms.

关键词： CORBA java rmi COM/DCOM distributed computing distributed objects design patterns software architecture

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Performance evaluation of java rmi: A distributed object architecture for Internet based applications 8

Performance evaluation of Java RMI: A distributed object arc...

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8th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems

作者： Ahuja, SP Quintao, R Univ N Florida Dept Comp & Informat Sci Jacksonville FL 32224 USA

ISBN: (纸本)076950728X

With the explosive growth of the Internet and of network services, there is a proliferation of distributed applications such as e-commerce and other web based applications that seek to leverage the power of the Internet. There have been several tools and standards for developing distributed applications including BSD sockets, RPC, and DCE. These have begun to evolve into object-based distribution schemes such as java Remote Method Invocation (rmi). java rmi is increasingly being used in Internet based applications as a java only solution to the challenges facing distributed application developers. One of these challenges includes delivering better performance to end-users. Hence it is important to study the performance parameters of rmi. This paper evaluates the performance of rmi empirically and compares its performance with the java Sockets API. It also evaluates the benefits rmi offers to the developers of distributed applications. Thus Internet and web-based application developers gain an insight into the performance aspects and other tradeoffs involved when using the java rmi distributed object architecture.

关键词： java rmi java Sockets performance evaluation Internet WWW

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Support and optimization of java rmi over a Bluetooth environment

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CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE 2005年第7-8期17卷 967-989页

作者： Wei, PC Chen, CH Chen, CW Lee, JK Natl Tsing Hua Univ Dept Comp Sci Hsinchu 30055 Taiwan

Distributed object-oriented platforms are increasingly important over wireless environments for providing frameworks for collaborative computations and for managing a large pool of distributed resources. Due to limited bandwidths and heterogeneous architectures of wireless devices, studies are needed into supporting object-oriented frameworks over heterogeneous wireless environments and optimizing system performance. In our research work, we are working towards efficiently supporting object-oriented environments over heterogeneous wireless environments. In this paper, we report the issues and our research results related to the efficient support of java rmi over a Bluetooth environment. In our work, we first implement support for java rmi over Bluetooth protocol stacks, by incorporating a set of protocol stack layers for Bluetooth developed by us (which we call javaBT) and by supporting the L2CAP layer with sockets that support the rmi socket. In addition, we model the cost for the access patterns of java rmi communications. This cost model is used to guide the formation and optimizations of the scatternets of a java rmi Bluetooth environment. In our approach, we employ the well-known BTCP algorithm to observe initial configurations for the number of piconets. Using the communication-access cost as a criterion, we then employ a spectral-bisection method to cluster the nodes in a piconet and then use a bipartite matching scheme to form the scatternet. Experimental results with the prototypes of java rmi support over a Bluetooth environment show that our scatternet-formation algorithm incorporating an access-cost model can further optimize the performances of such as system. Copyright (c) 2005 John Wiley & Sons, Ltd.

关键词： distributed object-oriented computing wireless computing java rmi Bluetooth architectures collaborative computing

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Adapting java rmi for grid computing

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FUTURE GENERATION COMPUTER SYSTEMS 2005年第5期21卷 699-707页

作者： Alt, M Gorlatch, S Univ Munster Inst Informat D-48149 Munster Germany

Computational grids allow the users to run their applications on remote high-performance servers available via Internet. java is often used to develop portable grid applications, with programs being sequences (compositions) of remote method calls. We demonstrate an inherent inefficiency of the standard remote method invocation (rmi) mechanism of java for implementing compositions of remote calls. We propose a new, optimised rmi mechanism, called future-based rmi, that substantially reduces the unnecessary communication overhead of method compositions in a grid environment. We present an analytical model for estimating the performance improvements achieved by our mechanism and report experimental results for two case studies on a grid testbed including a high-performance shared-memory server which is accessed from a client located 500 km away. (c) 2004 Elsevier B.V. All rights reserved.

关键词： grid computing network enabled servers java rmi performance modeling futures

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STUNT enhanced java rmi 1

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8th IFIP International Conference on Distributed Applications and Interoperable Systems

作者： Haase, Oliver Reiser, Wolfgang Waesch, Juergen Konstanz Univ Appl Sci Dept Comp Sci Constance Germany

ISBN: (数字)9783540686422

ISBN: (纸本)9783540686392

java rmi uses HTTP tunneling for NAT traversal. While HTTP tunneling is a valid technique for traditional client-server-architectures, it is too heavy-weight for highly distributed systems such as peer-to-peer applications. In this paper, we propose a STUNT enhanced rmi mechanism that takes advantage of the hole punching NAT traversal technique that many successful peer-to-peer applications use. Because the modified communication behavior is made part of the rmi server stub, our approach is fully transparent to the rmi client.

关键词： java rmi NAT traversal STUNT TCP hole punching

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Adapting java rmi for grid computing

Adapting Java RMI for grid computing

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7th International Conference on Parallel Computing Technologies (PaCT 2003)

作者： Alt, M Gorlatch, S Univ Munster Inst Informat D-48149 Munster Germany

关键词： grid computing network enabled servers java rmi performance modeling futures

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Experiment on embedding interception service into java rmi

Experiment on embedding interception service into Java RMI

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3rd International Workshop on java-Related Technologies

作者： Chen, J Wang, K Univ Windsor Sch Comp Sci Windsor ON N9B 3P4 Canada

ISBN: (纸本)3540210911

Middleware interceptors are a well-recognized powerful technique that enables the extensions of the middleware functionality in a way transparent to both the existing middleware implementations and the distributed applications built on top of them. In recent CORBA specifications, OMG has provided the standard specification of portable interceptors. This specification determined the interception service that any CORBA implementation should provide. As a well-known middleware however, java rmi did not offer the interception mechanism. Based on our experiment, we address in this paper, the architectural and design issues on embedding interception service into the existing implementation of java rmi from SUN Microsystems. Our interception service follows the style and the functionality of CORBA interception service to support request portable interceptors.

关键词： interceptors java rmi CORBA dynamic proxy reflection

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Klient-server aplikace založená na technologii java rmi

Klient-server aplikace založená na technologii JAVA RMI

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作者： Salášek, Jan Brno University of Technology

Bakalářská práce shrnuje možnosti pro vytváření distribuovaných systémů využitelných v platformě java. Zabývá se zrychlením výpočtu pomocí paralelizace... 详细信息

Bakalářská práce shrnuje možnosti pro vytváření distribuovaných systémů využitelných v platformě java. Zabývá se zrychlením výpočtu pomocí paralelizace a distribuovaného zpracování dat.

关键词： java rmi SOAP java IDL CORBA paralelizace genetické algoritmy problém batohu java rmi SOAP java IDL CORBA parallelization genetic algorithms knapsack problem Text

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Create Distributed Application with java rmi to Manipulate BLOBs

Create Distributed Application with Java RMI to Manipulate B...

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2004 International Symposium on Distributed Computing and Applications to Business, Engineering and Science

作者： Wang Jingyang,Wang Jianxia,Zhang Xiaoming,Qin Min,Fu Dong College of Information Science & Engineering,Hebei University of Science and Technology Shijiazhuang Hebei 050054,China

This article introduces java Remote Method Invocation(rmi) architecture,principle and the main steps of developing distributed java programs with *** present a method of creating distributed programming with java rmi based on JDBC(java Database Connectivity) to manipulate BLOBs (Binary Large Objects) stored in database,illustrate the working principle and working process of the method,and provide an example manipulating BLOBs stored in Oracle's LONG RAW field.

关键词： java rmi Manuscript Distributed Programming BLOBs JDBC

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