Compaq Reliable Transaction Router manual RTR Terminology

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RTR Terminology

RTR Terminology

The following terms are either unique to RTR or redeﬁned when used in the RTR context. If you have learned any of these terms in other contexts, take the time to assimilate their meaning in the RTR environment. The terms are described in the following order:

•Application

•Client, client application

•Server, server application

•Channel

•RTR conﬁguration

•Roles

•Frontend

•Router

•Backend

•Facility

•Transaction

•Transactional messaging

•Nontransactional messaging

•Transaction ID

•Transaction controller

•Standby server

•Transactional shadowing

•RTR journal

•Partition

•Key range

Introduction 1–3

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Contents Reliable Transaction Router Getting Started Page Contents Reliability Features Figures Page Purpose of this Document PrefaceDocument Structure For all users Related DocumentationReaders Comments Reading PathIf V2 to System Manager Application Programmer= Tutorial Reliable Transaction Router IntroductionRTR Continuous Computing Concepts RTR Continuous Computing ConceptsRTR Terminology RTR TerminologyClient Symbol Server Symbol Roles Symbols Components in the RTR Environment Nontransactional messaging Transaction ID Controller Application Presentation Database ServerBusiness Logic Odbc Model RTR Frontend PC BrowserJournal Browser11 RTR Deployed on Three Nodes 12 Standby Server Conﬁguration 13 Transactional Shadowing Conﬁguration RTR Server Types RTR Server TypesStandby server Standby in a cluster 15 Standby Servers 16 Shadow Servers Server1 Server2 Server3 Server4 17 Concurrent ServersPartition a Transaction19 Bank Partitioning Example Standby Server Conﬁgurations Anonymous clients Tunnel RTR Networking Capabilities RTR Networking CapabilitiesPage Three-Layer Model Architectural ConceptsThree Layer Model Three-Layer ModelBroadcasts RTR Facilities Bridge the GapFlexibility and Growth RTR Facilities Bridge the GapFlexibility and Growth Transaction IntegrityObject-Oriented Programming Partitioned Data ModelPartitioned Data Model Partitioned Data Model Object-Oriented ProgrammingFunctional and Object-Oriented Programming Compared ObjectsExample 2-1 Objects-Deﬁned Sample Messages Class RelationshipsPolymorphism Object Implementation Beneﬁts XA Support XA SupportServers Reliability FeaturesRecovery Scenarios Failover and RecoveryFailover and Recovery Recovery Scenarios Backend Recovery Router Recovery Frontend RecoveryPage RTR Interfaces RTR Management Station RTR Management Station RTR Create Facility DESIGN/ALLROLES=NODEA RTR RTRRECEIVEMESSAGE/TIME=0 RTR RTRSTARTTX/CHAN=C Interface Application Programming InterfacesRTR Browser Interface Application Programming InterfacesRTR C Example of an open channel call in an RTR client program RTR System Management Environment RTR EnvironmentRtrcomserv RTR System Management EnvironmentManagement Station Running Browser Software RTR System Management EnvironmentMonitoring RTR RTR Runtime Environment Client Application RTR Runtime EnvironmentOptional External Applet Not Running Whats Next? Whats Next?Page Glossary Broadcast BranchCallout server ChannelConcurrent server Common classesData marshalling Data objectEndian Fault tolerantEvent Event drivenInquorate FrontendJournal Key rangeMessage handler MessageMultichannel MultithreadedProcess PrimaryProperties Property classesRouter RollbackRTR conﬁguration RTR environmentStandby ShadowTransaction Transaction controllerTransactional message Two-phase commitTransactional shadowing Index-1 IndexIndex-2