Constructing Dependable Web Services
Constructing Dependable Web Services
复制标题
构建可靠的 Web 服务
DOI：
10.1109/4236.815846
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
F. Panzieri
中科院分区：
文献类型：
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作者：
D. Ingham;S. Shrivastava;F. Panzieri
当今数以百万计的Web站点中的大多数提供对相对少量的不经常变化的信息的只读访问。这些站点上的负载通常很小，并且服务通常可以作为通用工作站上的后台任务托管。在这些站点向用户提供的服务质量（QoS）的关注通常不是主要的。相反，非常受欢迎的站点数量要少得多;它们支持重负载，必须满足用户对QoS的期望，以保持其受欢迎程度。我们将讨论支持大容量、高可靠性Web服务所涉及的问题。我们开始调查的各种技术挑战和限制，在这种环境下，其次是目前使用的硬件和基于网络的方法，以满足可扩展性的要求和软件实现的技术，以解决容错。然而，这些方法不能很好地扩展，因此我们讨论可能的替代方案。
The majority of today's millions of Web sites offer read-only access to relatively small amounts of infrequently changing information. The load on these sites is usually small, and services can often be hosted as background tasks on general-purpose workstations. Concern for the quality of service (QoS) presented to users at these sites is generally not primary. Conversely, a much smaller number of sites are very popular; they support heavy loads and must meet user expectations regarding QoS to maintain their popularity. We discuss issues involved in supporting high-volume, high-reliability Web services. We begin by surveying the diverse technical challenges and constraints posed in this environment, followed by currently used hardware and network based approaches to meeting the scalability requirements and software-implemented techniques to addressing fault tolerance. However, these approaches do not scale well, so we discuss possible alternatives.