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1. Bandwidth Reduction Appliance in IP Network Remote Mirroring System | |||
TAN Lejuan,YAO Wenbin | |||
Computer Science and Technology 23 December 2011 | |||
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Abstract:This paper designs a bandwidth reduction allpiance in IP network remote mirroring system. For the purpose of transparency, an iSCSI-based redundancy elimination approach combining the variable-sized chunking method and the sliding window method is proposed in the bandwidth reduction allpiance. Firstly, the similarity detection technique, a combination of content-defined chunking (CDC) with Bloom filter, is introduced to find the most similar data block, making redundancy elimination more flexible and efficient. Secondly, a modification is supplied to rsync to make it applicable for iSCSI data blocks, which ensures that the redundancy elimination is transparent to both the local disk and the remote disk. Extensive experiments on ASCII and binary files demonstrate that the new system can achieve a higher performance on synchronization time and bandwidth cost compared to the system without redundancy elimination. | |||
TO cite this article:TAN Lejuan,YAO Wenbin. Bandwidth Reduction Appliance in IP Network Remote Mirroring System[OL].[23 December 2011] http://en.paper.edu.cn/en_releasepaper/content/4457027 |
2. Extending BPEL for Stateful Service in Convergence Network | |||
Liu Chen,Zou Hua | |||
Computer Science and Technology 04 January 2010 | |||
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Abstract:Network convergence is the trend of future networks to experience various services in a single network. To create and compose services rapidly, variously and efficiently is the main purpose of the service creation in convergence network. BPEL is an important tool in SOA to compose various services in a code- and platform-independent way. In this paper, we discuss the deficiencies of BPEL in modeling stateful telecom service, and then offer an extending proposal for BPEL to support state pattern explicitly to facilitate the stateful service creation in use of BPEL. With the extensions, the service designer could mode a stateful service into a stateful BPEL process, and then the process can be executed on an extended BPEL engine. We also implement a visual editor and an engine based on open-source projects to support our extensions. With the visual editor, the stateful service could be modeled in state pattern visually. And the stateful process can be deployed and executed in the engine. | |||
TO cite this article:Liu Chen,Zou Hua. Extending BPEL for Stateful Service in Convergence Network[OL].[ 4 January 2010] http://en.paper.edu.cn/en_releasepaper/content/38393 |
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