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Trace checking is a procedure for evaluating requirements over a log of events produced by a system. This paper deals with the problem of performing trace checking of temporal properties expressed in TemPsy, a pattern-based specification language. The goal of the paper is to present a scalable and practical solution for trace checking, which can be used in contexts where relying on model-driven engineering...
Microservice architectures provide small services that may be deployed and scaled independently of each other, and may employ different middleware stacks for their implementation. Microservice architectures intend to overcome the shortcomings of monolithic architectures where all of the application's logic and data are managed in one deployable unit. We present how the properties of microservice architectures...
Network function virtualization (NFV) is a promising solution for cost reduction, service agility, and scalability to cope with the dynamic changes of traffic volume and business requirements. In the NFV framework, management and orchestration framework (MANO) plays an important roles in the automated provisioning, configuration, lifecycle management, and high availability of virtual network functions...
This paper covers the importance of performance testing of web applications and analysing the application's bottleneck based on hardware, software and resource utilization. Mainly, the focus would be to performance test the application on different parameters like load, stress, scalability, reliability, security and capacity front. Now a days everyone expects everything to be very fast but at the...
Cloud computing is an efficient and cost effective realization of the utility function principle. Over the last years, a vast pool of choices for businesses has been created. This diversity of cloud infrastructures, platforms, and tools creates several challenges. In particular, it hinders interoperability, promotes vendor lock-in, but more importantly prevents businesses from making informed and...
A key feature of Cloud computing is its agility and flexibility to support the scalability needs of business solutions. Currently, the agility is only limited to the scalability of the compute, memory and storage. To improve an application's agility, we need to monitor & measure solution level metrics and associate the performance of the metrics to the business agility needs of the solution...
With the advent of cloud, a large number of cloud providers have surfaced in the market. Cloud Consumers are rapidly using cloud services(IaaS, PaaS, and SaaS) to meet their business needs while cloud providers are rapidly developing much needed tools and environments. This rapid growth however is creating a significant need to develop fast and controlled mechanisms for managing costs, capacity and...
Performance optimization of Cloud Computing Environment is about making the components in the cloud to meet the component level requirements and customer expectations. It is aimed at increasing the performance of a cloud service at a minimum cost depending on various constraints. Performance optimization looks at improving the performance of various factors like • Disk performance • Throughput • Response...
The growth of network scale and business diversification makes network management complexity increase dramatically, and the network running status is difficult to control. With the help of network management system that can effectively manage the entire network, so that the network is stable, secure, efficient working. But the prominent problems in network management system is that network equipment...
Nowadays the general interest on Cloud Computing as a technical and business solution is growing. The pool of available cloud applications, services and platforms is increasing leveraging new features for the cloud assets provisioned to the end user. This massive amount and divergence of cloud features across the cloud stack layers introduces considerable management overhead to the various stakeholders...
A typical business model in cloud environments for service providers is the provision of composite services built from resources and services offered by other providers. Customers of these composite services can make an advance payment before consumption. In this scenario, accounting systems will supervise each service comprising given composite services individually. As the number of constituent...
In-network management (INM) is a paradigm for distributed and embedded management for future networks. One of its main design goals is to be used in conjunction with Network-as-a-Service (NaaS)-enabled networks, which need to be managed efficiently, in a way that requires only little manual interaction, and across administrative network domains. In this paper, we present an elaborate an INM prototype...
To improve the scalability and dynamism of current workflows, this paper presents a loosely coupled and modular service oriented workflow model, which is realized by enterprise service bus technology, a modular workflow enactment system and a run-time service matching policy. The model uses enterprise service bus to lower data dependency of different business service modules, the modular enactment...
As a macro complex systematic engineering, the Digital Ocean project is an ongoing task in china. The mission of the Digital Ocean is to build an interactive network information system based on a three-dimensional globe. The Digital Ocean can help provide integrated information on historical, current and future states of ocean and coastal zone. This paper addresses the architecture of Digital Ocean,...
This paper describes a benchmarking workload model for business process execution language (BPEL) engines for Web services. The proposed model is based on simulation of real world traffic conditions by defining a set of requirements which best characterize the end-users. The performance characteristics are evaluated on top of collected measurements such as success/fail rate, response times or round-trip...
Collecting data on user activities is one of the fundamental middleware services in Web-enabled systems. The collected data is analyzed and used by various high-level services, like user profiling, accounting, security auditing, and system health monitoring. In this paper, we present architecture and performance evaluation of usage tracking components for service-oriented middleware systems. Presented...
Accelerated by the rapid deployment of distributed systems and the Internet, online collaboration and information sharing are pervasive in enterprise computing environment. With regard to the requirements of online collaboration and information sharing, authentication information needs flexible manipulation to facilitate federation across trust domains. To achieve identity federation for federated...
We developed a quality of service (QoS) management system to support service level management (SLM) for global enterprise services. The QoS management system is integrated with one of our enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that our integrated solution helps global enterprise services to better...
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