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Evaluating the effect of locking on multitenancy isolation for components of cloud-hosted services.

Ochei, Laud Charles; Ejiofor, Christopher Ifeanyichukwu


Laud Charles Ochei

Christopher Ifeanyichukwu Ejiofor


Multitenancy isolation is a way of ensuring that the performance, stored data volume and access privileges required by one tenant and/or component does not affect other tenants and/or components. One of the conditions that can influence the varying degrees of isolation is when locking is enabled for a process or component that is being shared. Although the concept of locking has been extensively studied in database management, there is little or no research on how locking affects multitenancy isolation and its implications for optimizing the deployment of components of a cloud-hosted service in response to workload changes. This paper applies COMITRE (Component-based approach to Multitenancy Isolation through Request Re-routing) to evaluate the impact of enabling locking for a shared process or component of a cloud-hosted application. Results show that locking has a significant effect on the performance and resource consumption of tenants especially for operations that interact directly with the local file system of the platform used on the cloud infrastructure. We also present recommendations for achieving the required degree of multitenancy isolation when locking is enabled for three software processes: continuous integration, version control, and bug tracking.

Journal Article Type Article
Publication Date Jun 30, 2018
Journal Advances in Science, Technology and Engineering Systems Journal
Print ISSN 2415-6698
Peer Reviewed Peer Reviewed
Volume 3
Issue 3
Pages 92-99
Institution Citation OCHEI, L.C. and EJIOFOR, C.I. 2018. Evaluating the effect of locking on multitenancy isolation for components of cloud-hosted services. Advances in science, technology and engineering systems journal [online], 3(3), pages 92-99. Available from:
Keywords Multitenacy; Tenant isolation; Locking; Cloud-hosted service; Cloud patterns; Software process; Bug tracking


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