Object replication and CORBA fault-tolerant object service |
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Authors: | Yeh Yao-ming Sun Wen-Da Chen Yeong-Sheng |
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Institution: | 1. Department of Information and Computer Engineering, Taiwan Normal University, Taipei, China 2. Department of Information Management, Hwa-Hsia College of Technology and Commerce, Taipei, China
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Abstract: | CORBA (Common Object Request Broker Architecture) provides 16 Common Object Services for distributed application development, but none of them are fault-tolerance related services. In this paper, we propose a replicated object based Fault-Tolerant Object Service (FTOS) for CORBA environment. Two fault-tolerant mechanisms are provided in FTOS including dynamic voting mechanism and object replication mechanism. The dynamic voting mechanism uses majority-voting strategy to ensure object state consistency in failure situations. The object replication mechanism can help system administrators to replicate and start-up objects easily. Our implementation provides a library according to the style of COSS. With this library, programmers can develop distributed applications with fault-tolerance capability very easily. |
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