Recovery for Service-Oriented Applications

面向服务的应用程序的恢复

• 批准号: 0533625
• 负责人: Betty Salzberg
• 金额: --
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0533625&HistoricalAwards=false
• 关键词: Recovery; Service; Oriented; Applications

IIS-0533625Betty Salzberg [e-mail] UniversityRecovery for Service-Oriented ApplicationsThe goal of this research project is to provide application recoveryin a realistic setting. The server software, called an SOA, orService-Oriented Application, is realized as a process and providesits service through an interface consisting of application methods. Aclient, either an end client application or another SOA, uses the SOAservice via remote procedure call to application methods. Manymission-critical electronic business application servers fit thismodel.The recovery model is tiered. The innermost tier consists of sharedmemory (application variables shared by the different threads of theserver process). The middle tier, called a service domain, consists oftightly-coupled SOAS. Optimistic logging is used within the servicedomain. Optimistic logging does not write log records to disk beforesending messages and is thus low-overhead. Communication outside theservice domain uses pessimistic logging, where log records are writtento disk before messages are sent. Special result logging is used tocommunicate with transactional systems such as DBMSs.The results of this research will help provide availability forapplications which use web services. Since many mission-criticalelectronic business application servers fit this model, the greatestimpact of this research will be in increasing availability for thoseservers and hence for the applications which depend on them. Inaddition, the project will be used in training of Computer SciencePh.D. students, currently a national priority. The code andmanuscripts for this project will be disseminated via the project website http://www.ccs.neu.edu/home/salzberg/soa/

IIS-0533625 Betty Salzberg [e-mail]. edu东北大学面向服务的应用程序的恢复本研究项目的目标是在现实环境中提供应用程序恢复。 服务器软件称为SOA或面向服务的应用程序，它被实现为一个进程，并通过由应用程序方法组成的接口提供服务。 无论是最终客户端应用程序还是其他SOA，Aclient都通过对应用程序方法的远程过程调用来使用SOA服务。 许多任务关键型电子商务应用程序服务器都适合此模型。最内层由共享内存（由服务器进程的不同线程共享的应用程序变量）组成。中间层称为服务域，由紧密耦合的SOAS组成。 乐观日志记录在服务域中使用。 乐观日志不会在消息发送之前将日志记录写入磁盘，因此开销很低。 服务域之外的通信使用悲观日志记录，其中日志记录在发送消息之前写入磁盘。特殊的结果日志用于与事务系统（如DBMS）进行通信，本研究的结果将有助于为使用Web服务的应用程序提供可用性。由于许多关键任务的电子商务应用服务器适合这种模式，最大的影响，这项研究将在增加可用性的服务器，因此，对应用程序的依赖。 此外，该项目还将用于计算机科学博士的培训学生，目前是国家重点。 该项目的代码和手稿将通过项目网站http://www.ccs.neu.edu/home/salzberg/soa/传播