帮IDC全解决——浪潮英信互联网数据中心解决方案

国内IDC正大力发展虚拟主机服务(Web Hosting)、主机托管业务(Server Hosting)甚至应用托管业务(Application Hosting)等多种增值服务。在建设数据中心的过程中,不可避免地涉及到下述问题:网络设备和服务器设备如何选型;服务器的高可用性如何保证;如何提高电子商务服务器的性能以及可用性;当数据中心的规模逐渐增加时,如何做到数据的管理,安全以及备份等诸多问题。浪潮英信为IDC用户提供了一个全面的解     

倚天不出 谁与争锋浅谈推出IBM eServer x5eries的重要意义

业务外包或是称作是“商业流程外包”（Business Outsourcing BPO),主要是指针对一些关键业务的职能模块如CRM、ERP等实施应用租赁的方式。广义上还应该包括“应用外包”（Application Outsourcing),典型的代表如IDC的“托管服务”（Hosting Sevrvice).姑且不去理会这些概念间存在的边界重叠与模糊不清,简单地来理解,业务外包无外乎就是由某类专业的应用服务提供商,采用收取租金的方式向客户提供某种职能模块应用或其他管理服务的使用权,其本质上通过化分散应用为集中管理,实现规模效应,从而达到降低客户使用成本提高运营效率的目标。     

浪潮“节能新星”NF130D为IDC成长“减负”

合理优化 一升一降 目前,IDC服务商提供的服务主要集中在场地／机柜租用（Co—location）和消费者／企业互联网接入（ISP／leasemine）应用以及Web主机托管（Hosting）方面。不难发现,这些应用对服务器的数据输入／输出带宽要求比较高。扩展性能的要求并不高。据调查,90％的单路服务器IDC用户没有扩展卡的需求。IDC服务商,特别是电信增值运营商在进行大规模、高密度部署时。对于产品的稳定性以及运行、维护成本更加敏感。     

基于工作流的Web服务组合系统的设计与实现

单个Web服务难以满足实际应用的需求,为了解决互联网应用的集成和协作问题,需要把独立的Web服务组合起来以实现复杂的业务逻辑功能.通过分析工作流与Web服务流程执行的相同点,设计并实现了一个基于工作流的Web服务组合系统(WSCS).该系统能在自治的、异构的、动态的环境下灵活、高效地组合Web服务.整个系统主要包括三个模块:组合流程建模模块、服务选取模块、流程执行模块.     

巧用FileSystem组件实现Web应用中的本地特定打印

基于Web的业务应用一般都采用三层或三层以上的结构,客户端与Internet互联,需要从托管在IDC的服务器上提取业务数据在本地打印输出。在客户端浏览器只能打印简单的HTML页面的情况下,要求更为强大灵活的打印输出功能;笔者曾经为某公司开发网络教育管理软件时采用FileSystem组件实现在本地打印三联收款凭证和准考证等的功能。     

Web环境下的SSO实现模式的研究

针对单点登录（SSO）这一传统难题,该文分析比较了各种SSO设计模型的优缺点,利用Web应用这一关键技术,给出了面向Web应用的SSO系统设计方案。该文描述了面向Web应用的SSO系统的设计思想、体系结构以及各个模块的功能和模块之间的关系和交互,详细设计了SSO Gateway、SSO Agent、SSO Auth等三个重要模块。该文创新地结合J2EE Web应用、Web service、JAAS等成熟的技术,为解决单点登录这个安全集成领域中的核心问题之一,设计了一个完整的、可行的、先进的实现方案。读者可以在该文的指导下,结合自身实际情况较为容易地改造现有应用系统,真正实现单点登录的集成。     

IDC可视化软件开发平台中的配置与编译子系统

为了解决目前IDC（互联网数据中心）机房可视化管理软件开发代价大、灵活性差、迭代周期长的问题,提出了可定制的、模块复用的IDC可视化软件开发平台,本文详述了该平台中核心子系统-配置与编译子系统的设计与实现.配置与编译子系统采用AssetBundle技术封装物体模型,采用DLL封装功能模块,并提出了一种新的结合编辑距离和分块计算的增量更新算法AssetDiff,从而满足了编译、管理可复用的物体模型和功能模块的需求,并实现了管理、配置、发布IDC可视化软件以及已发布软件远程更新的功能.     

基于.NET的Web应用框架的设计与实现

分析了目前Web应用的不足,介绍了Web服务和持久层技术,提出了一种.NET平台下的Web应用框架.该框架将传统三层Web应用系统中的应用服务层进一步从逻辑上划分为三个层次：业务外观层、业务规则层和持久层.业务外观层采用Facade设计模式进行设计,以Web服务方式向Web表示层提供服务,并利用Tier Developer设计持久层,实现对象持久化.最后以供应链管理（SCM）系统中的采购单模块为例,给出了该框架的具体实现.     

IDC网络平台设计原则及应用

本文介绍了电信运营商IDC网络系统的组成结构,通过对IDC业务模式的分析,提出了IDC网络平台设计原则,在此原则的基础上,结合具体工程建设项目,构建了IDC网络模块,并针对各个设计模块给出了建议设备参数。     

IDC网络平台设计原则及应用

本文介绍了电信运营商IDC网络系统的组成结构，通过对IDC业务模式的分析，提出了IDC网络平台设计原则，在此原则的基础上，结合具体工程建设项目，构建了IDC网络模块，并针对各个设计模块给出了建议设备参数。     

System support for web hosting services on server clusters

The Web hosting service is becoming increasingly important in which the service providers offer system resources to store and provide Web access to contents from individuals, institutions, and companies who lack resources or expertise to maintain a Web site. Web server cluster is a popular architecture used by the hosting service providers as a way to create scalable and highly available solutions. However, hosting a variety of contents from different customers on such a distributed server system faces new design and management problems and requires new solutions. This paper describes the research work we are pursuing for constructing a system to address the challenges faced by hosting Web content on a server farm environment. We also report performance data measured from a real hosting service.     

基于经济模型的Web区分服务模型的设计与实现

Web区分服务研究已经成为电子商务应用中的重要课题,基本思想是为高优先级用户提供更好的服务。该文基于经济模型给出另一种形式的Web区分服务,并用来解决IDCWebhosting中用户资源的优化配置。     

面向客户视角的Web服务组合优化与集成管理方法*

现有Web服务组合研究未考虑客户视角的服务质量感知和对功能与质量的均衡需求,无法优化配置网上丰富的Web服务资源并与网下服务资源协同。借鉴已有研究成果,研究基于客户视角的服务组合优化与集成管理问题：建立客户视角的Web服务模型、提出服务组合质量均衡推荐方法、建立服务功能和质量的网上网下集成管理模型。研究有助于提高现代Web服务管理服务水平。     

智能互联网

Intelligent Web functions essentially as an autonomic entity. The Web automatically regulates the func-tions and cooperation of related Web sites and available application services. In the paper we will discuss the key is-sues related to the intelligent Web, such as semantic representation, Agent, resource management, service manage-ment, Web mininlz and so on.     

Web服务网络管理研究与实现

把Web服务技术引入到网络管理中,通过封装功能提高网络管理系统的扩展性和灵活性。可以在网络异构环境下跨越防火墙和各种平台实现组件的互操作,把已有的网络管理功能包装起来,利用它组合组件进行计算的特性实现软件复用。从软件工程、设计模式的角度提出并分析设计Web服务网络管理新模型和SOAP与SNMP的转换接口,较好地解决了Web服务应用到网络管理中数据传输问题,可以把已有的网络管理功能包装起来,把分散的应用集成起来,为用户提供更为灵活的接口,实现软件复用,并跨平台实现了该系统。     

服务管理综述

1 引言随着网络技术和通信技术的迅速发展,Web服务逐渐成熟,在应用广度和应用深度方面都有突破,Web服务也从简单的信息发布、信息共享逐渐演变成智能的多功能服务。基于Web的服务管理是在Web服务功能逐渐智能化的基础上提出的。网络上的服务越来越多,处于无序状态,用户对Web服务的要求越来越多样化,有效组织好现有网络的资源,提供用户满意服务,就成为Internet发展必须解决的问题。 Web服务应由内容主导型(Content-Central)转向服务主导型(Service-Central)。由基础服务转向智能服务。近年来围     

A bio-inspired emergent system for intelligent Web service composition and management

Some important mechanisms in neuroendocrine-immune (NEI) system are inspired to design a decentralized, evolutionary, scalable, and adaptive system for Web service composition and management. We first abstract a novel intelligent network model inspired from the NEI system. Based on this model, we then propose a method for Web service emergence by designing a bio-entity as an autonomous agent to represent Web service. As such, automatic composition and dynamic management of Web services can be achieved. Also, we build its computation platform which allows the bio-entities to cooperate over Web services and exploits capabilities of their partners. Finally, the simulation results on the platform show that Web service emergence can be achieved through self-organizing, cooperating, and compositing. The proposed method provides a novel solution for intelligent composition and management of Web services.     

Quality management in service ecosystems

Service-oriented architectures and Web services mature and have become more widely accepted and used by industry. This growing adoption increased the demands for new ways of using Web service technology. Users start re-combining and mediating other providers’ services in ways that have not been anticipated by their original provider. Within organisations and cross-organisational communities, discoverable services are organised in repositories providing convenient access to adaptable end-to-end business processes. This idea is captured in the term Service Ecosystem. This paper addresses the question of how quality management can be performed in such service ecosystems. Service quality management is a key challenge when services are composed of a dynamic set of heterogeneous sub-services from different service providers. This paper contributes to this important area by developing a reference model of quality management in service ecosystems. We illustrate the application of the reference model in an exploratory case study. With this case study, we show how the reference model helps to derive requirements for the implementation and support of quality management in an exemplary service ecosystem in public administration.     

Flow-Based Web Application Brute-Force Attack and Compromise Detection

In the early days of network and service management, researchers paid much attention to the design of management frameworks and protocols. Since then the focus of research has shifted from the development of management technologies towards the analysis of management data. From the five FCAPS areas, security of networks and services has become a key challenge. For example, brute-force attacks against Web applications, and compromises resulting thereof, are widespread. Talks with several Top-10 Web hosting companies in the Netherlands reflect that detection of these attacks is often done based on log file analysis on servers, or by deploying host-based intrusion detection systems (IDSs) and firewalls. However, such host-based solutions have several problems. In this paper we therefore investigate the feasibility of a network-based monitoring approach, which detects brute-force attacks against and compromises of Web applications, even in encrypted environments. Our approach is based on per-connection histograms of packet payload sizes in flow data that are exported using IPFIX. We validate our approach using datasets collected in the production network of a large Web hoster in the Netherlands.     

A Model of Grid Service Capacity

Computational grids （CGs） are large scale networks of geographically distributed aggregates of resource clusters that may be contributed by distinct organizations for the provision of computing services such as model simulation, compute cycle and data mining. Traditionally, the decision-making strategies underlying the grid management mechanisms rely on the physical view of the grid resource model. This entails the need for complex multi-dimensional search strategies and a considerable level of resource state information exchange between the grid management domains. In this paper we argue that with the adoption of service oriented grid architectures, a logical service-oriented view of the resource model provides a more appropriate level of abstraction to express the grid capacity to handle incoming service requests. In this respect, we propose a quantification model of the aggregated service capacity of the hosting environment that is updated based on the monitored state of the various environmental resources required by the hosted services. A comparative experimental validation of the model shows its performance towards enabling an adequate exploitation of provisioned services.