Safety ring: fault-tolerant distributed process execution in OSIRIS

Stojnić, Nenad and Schuldt, Heiko. (2012) Safety ring: fault-tolerant distributed process execution in OSIRIS. Basel.

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Official URL: http://edoc.unibas.ch/dok/A6043850

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The advent of service-oriented architectures (SOAs) has strongly facilitated the development and deployment of large-scale distributed (serviceoriented) applications. The middleware for orchestrating process-based applications that consist of several distributed services has to be inherently distributed as well, in order to provide a high degree of scalability and to avoid a single point of failure. Self-healing execution of such processes supported by a distributed middleware requires replicated control metadata and instance data of processes. Most importantly, replication has to be provided in a way that does not affect the adaptivity and elasticity behavior of the middleware for composite service execution. In this technical report, we introduce OSIRIS Safety Ring, a novel approach to fault-tolerant process execution. Safety Ring is based on OSIRIS, a distributed and decentralized middleware for the execution of composite services. Essentially, the Safety Ring exploits dedicated node monitors, organized in a self-organizing ring structure, for the replication of control data. Moreover, it leverages virtual stable storage for managing process instance data in a robust way. We present the architecture of OSIRIS’ Safety Ring and discuss in detail the algorithms it applies for self-healing process execution. The performance evaluation shows that the additional gain in robustness has only marginal effects on the scalability characteristics of the system.
Faculties and Departments:05 Faculty of Science > Departement Mathematik und Informatik > Informatik > Databases and Information Systems (Schuldt)
UniBasel Contributors:Schuldt, Heiko and Stojnic, Nenad
Item Type:Other
Publisher:University of Basel, Department of Mathematics and Computer Science
Note:Series: Technical reports / Departement Mathematik und Informatik ; CS-2012-002 -- Publication type according to Uni Basel Research Database: Other publications
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Last Modified:16 Aug 2013 07:34
Deposited On:16 Aug 2013 07:33

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