Coordinated Atomic Actions and System Fault Tolerance

More documents

Recommendations

Info

4. Integration of Complex Web ApplicationsIn addition to that:• integrated systems are to be used by general public lacking computer-relatedskills• the Internet is a poor communication medium: low quality, not predictable.Dependability is a serious concern. These systems are inherently complex and areprone to many faults of many types. Besides, multiple abnormal situations arelikely to happen concurrently.Conventional hardware fault tolerance techniques (replication, ordered delivery,group communication, TMR techniques and retry – cf OMG Fault TolerantCORBA service) can offer only partial solutions.24 February, 2004
4. Integration of Complex Web ApplicationsWe need fault tolerance mechanisms to deal with• users’ mistakes• components mistakes• component systems not delivering the service requested• environmental faults• component mismatches• application developers’ mistakes• and with all types of errors propagated by the underlying levels (OS,middleware, hardware) when they fail to deliver the required services.This is software fault tolerance at the application level (i.e., the level of integratedWeb applications).25 February, 2004
Page 10 and 11: 3. CA ActionsA CA action is a gener
Page 12 and 13: 3. CA Actions: Concurrent Exception
Page 14 and 15: 3. CA Actions: Long-Lived Activitie
Page 16 and 17: 3. CA Actions: A Case Studyenvironm
Page 18 and 19: 3. CA Actions: A Case StudyPre-cond
Page 20 and 21: 3. CA Actions: A Case Study20 Febru
Page 22 and 23: 4. Integration of Complex Web Appli
Page 26 and 27: 4. Integration of Complex Web Appli
Page 28 and 29: 5. CA Action Design of Web Applicat
Page 38 and 39: 6. Future Work and ConclusionsFault
Page 40: Thanks to Brian Randell, Avelino Zo

Coordinated Atomic Actions and System Fault Tolerance

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?