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AuthorReiser, Hans P.dc.contributor.author
Date of accession2016-03-14T13:38:47Zdc.date.accessioned
Available in OPARU since2016-03-14T13:38:47Zdc.date.available
Year of creation2006dc.date.created
AbstractUsing object-based middleware infrastructures is popular for the development of services in distributed systems. Active object replication is a suitable strategy to increase the availability of such services. Existing replication architectures, however, show some deficiencies in their flexibility and reconfigurability. This thesis presents the FTflex architecture, which extends the CORBA-based Aspectix middleware with flexible and reconfigurable replication mechanisms. The contributions of this thesis support the development of replicated objects, enable a deterministic execution of object methods with multiple threads, and provide a flexible and dynamically reconfigurable group communication system. First of all, this thesis designs an efficient replication architecture on the basis of fragmented objects. The presented solution offers transparency for clients and allows the relocation of parts of the service functionality to the client side. The developer of a replicated object can use semantic annotations to optimize the replication strategies. A tool for automated code generation simplifies application development. Second, this thesis addresses the concurrent execution of object methods. The FTflex architecture provides new strategies that ensure determinism even if multiple threads want to access the shared object state concurrently. FTflex uses source code analysis and transformation as a novel way to influence the thread coordination in the replica code. The third contribution of this thesis is a reconfigurable, consensus-based group communication system, which is used as a basis for active replication. This system supports variable failure models, ranging from crash-stop to Byzantine. A significant advantage of the system is its transparent support for consistent reconfigurations at runtime. In addition, the system offers internal instrumentation as a basis for autonomous adaptation and self-optimization.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandard (Fassung vom 03.05.2003)dc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v1dc.rights.uri
Dewey Decimal GroupDDC 004 / Data processing & computer sciencedc.subject.ddc
LCSHFault-tolerant computingdc.subject.lcsh
LCSHMiddleware. Congressesdc.subject.lcsh
LCSHObject orientation: Computer sciencedc.subject.lcsh
TitleFlexible and reconfigurable support for fault-tolerant object replicationdc.title
Resource typeDissertationdc.type
DOIhttp://dx.doi.org/10.18725/OPARU-367dc.identifier.doi
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-vts-58013dc.identifier.urn
GNDDatenreplikationdc.subject.gnd
GNDFehlertoleranzdc.subject.gnd
GNDObjektorientierungdc.subject.gnd
FacultyFakultät für Ingenieurwissenschaften und Informatikuulm.affiliationGeneral
Date of activation2007-01-04T13:50:45Zuulm.freischaltungVTS
Peer reviewneinuulm.peerReview
Shelfmark print versionZ: J-H 11.367 ; W: W-H 9.476uulm.shelfmark
DCMI TypeTextuulm.typeDCMI
VTS ID5801uulm.vtsID
CategoryPublikationenuulm.category
Bibliographyuulmuulm.bibliographie


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