This paper presents a two-stage service migration decision method which combines business workload forecasting with real-time load sensing, and thus adds business forecasting to previous load balancing approaches that rely solely upon real-time load sensing. The migration decision procedure and the detailed causal analysis algorithms based on Bayesian networks are also given. After the critical...

In a service-oriented multi-tenant SaaS application, all tenants share services and user requests of the service change dynamically. In order to provide high-quality web services, we must solve the problem of the load unbalance caused by dynamic user requests’ change. This paper proposes an approach based on hypergraph partition to keep load balance for serviceoriented multi-tenant SaaS applica...

In this paper we outline a shared knowledge representation based on RDF. It can be used in a distributed multi-tenant environment to store design knowledge. These RDF-graphs incorporate all necessary information to instantiate Bayesian network representations of certain problem solving cases, which are used to support the conceptual design tasks carried out by a salesperson during lead qualific...

Multi-tenant application is one of the main characteristics of cloud computing. Today, most of the application uses cache service for getting faster access and low response time. Currently in multi-tenant cloud applications data are often evicted mistakenly by cache service, which is managed by existing algorithms such as LRU. Also, security mechanisms are implemented to avoid data breach when ...

The database of multi-tenant Software as a Service (SaaS) applications has challenges in designing and developing a relational database for multi-tenant applications. In addition, combining relational tables and virtual relational tables to make them work together and act as one database for each single tenant is a hard and complex problem to solve. Based on our multitenant Elastic Extension Ta...

SaaS is a perfect technology to achieve scale economy. It uses multi-tenant to allow database to share storage but with irregular load, untraceable transaction characteristics and so on. TOL mechanism provides one granularity between the upper coarse-grained granularity and the lower finegrained granularity for each tenant. But the granularity may not be the most suitable. We define the cluster...

Traditional software applications are typically customized before being delivered to a client. This customization was a paid service delivered by software development organisations. With the growing demand of applications delivered with a SaaS model, software development organisations are increasingly responding with the migration of traditional applications to a multi-tenant SaaS deployment mo...

Multi-tenancy is an essential property of Cloud computing. It helps service providers to maximize resource utilization and reduce servicing costs per customer. It is therefore important for key components of the contemporary enterprise environment like the Enterprise Service Bus (ESB) to support and enable multi-tenancy. For this purpose, in this work we investigate the requirements for multi-t...

Replication technology, such as Quorum NRW system, is the most effective technology to improve availability of SaaS. However, the variety of SaaS transaction will result in application unbalance. In this paper, we construct a new Quorum NRW system for multitenant database which is based on the method of sharing database and schema model. It can provide different R and W values for each tenant a...

This paper discusses the importance of virtual machine (VM) scheduling strategies in cloud computing environments for handling increasing number tasks due to virtualization and technology adoption. The evaluates legacy methods specific VM algorithms Eucalyptus environment compare existing using QoS. also presents a self-adapting security monitoring system infrastructure that takes into account ...