NDLI: Evaluating Degrees of Multitenancy Isolation: A Case Study of Cloud-Hosted GSD Tools

Content Provider	IEEE Xplore Digital Library
Author	Ochei, L.C. Bass, J.M. Petrovski, A.
Copyright Year	2015
Description	Author affiliation: Sch. of Comput. Sci. & Digital Media, Robert Gordon Univ., Aberdeen, UK (Ochei, L.C.; Bass, J.M.; Petrovski, A.)
Abstract	Multitenancy is an essential cloud computing property where a single instance of an application serves multiple tenants. Multitenancy introduces significant challenges when deploying application components to the cloud due to the demand for different degrees of isolation between tenants. At the very basic degree of isolation, tenants still share application components as much as possible. However, while some components may benefit from low degree of isolation between tenants, others may need a higher degree of isolation, for instance, in a situation where a component is too critical to be shared, or needs to be configured specifically for individual tenants. This paper describes COMITRE (COmponent-based approach to Multitenancy Isolation Through request RE-routing) to empirically evaluate the degree of isolation between tenants enabled by three multitenancy patterns (i.e., shared component, tenant-isolated component, and dedicated component) for cloud-hosted Global Software Development (GSD) tools. We developed a multitenant component for each multitenancy pattern, integrated it within Hudson, and then compared their impact on different tenants. The study revealed among other things that a component deployed based on shared component offers a lower degree of tenant isolation (than tenant-isolated component and dedicated component) when one of the tenants is exposed to a demanding deployment condition (e.g, large instant loads). We also provide some recommendations to guide an architect in implementing multitenancy isolation on a set of GSD tools: Hudson, Subversion and Bugzilla.
Starting Page	101
Ending Page	112
File Size	630570
Page Count	12
File Format	PDF
e-ISBN	9781467395663
DOI	10.1109/ICCAC.2015.17
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cloud computing Multitenancy Databases Degree of Isolation Tenant Cloud Patterns GSD tools Computer architecture IP networks Software tools Testing
Content Type	Text
Resource Type	Article

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