DDS Tutorial -- Part II Hands On - OMG

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Configure the Protocol• Discovery• Reliability• Liveliness• Flow Control• Asynchronous write• Network Configuration– Enabled Transports +transport properties– Multicast addresses– Transport Priority• OS settings– Threads– MemoryWriterApplicationReaderApplication© 2009 Real-Time Innovations, Inc.
Tunable Reliability Protocol• Configurable AckNack reply timesto eliminate storms• Fully configurable to boundlatency and overhead– Heartbeats, delays, buffer sizes• Performance can be tracked bysenders and recipients– Configurable high/low watermark,Buffer full• Flexible handling of slowrecipients– Dynamically remove slowreceiversDataWriterPublisherS7S6S5S4S3S2S1Reliable•GuaranteedOrdered Delivery•“Best effort” alsosupportedDataReaderSubscriberS1S2S3S4S5S6S7S8 S7 S3 S5 S4 S2 S1S6NACK #6© 2009 Real-Time Innovations, Inc.
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DDS Tutorial -- Part IIHands OnGera
Page 3 and 4:
Context: Middleware TechnologiesThe
Page 5 and 6:
With increased complexity…End Use
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… middleware becomes necessaryEnd
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Network Middleware Examples• DDS,
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Middleware Communication ModelsPoin
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Queue versus Pub-Sub• Queue- Mess
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DDS Service Model:Communication Mod
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Other (non DDS)Commercial Pub-Sub M
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History:DDS the Standard(s)• Data
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DDS mandated for data-distribution
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DDS Adoption -Transportation, Indus
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Main differences of DDS vs other Pu
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Demo: ConceptsDisplay Area:Shows st
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QoS: Quality of ServiceQoS PolicyDU
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#2 Performance & ScalabilityDDS was
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Latency - (Linear Scale)DDS/JMS/Not
Page 35 and 36: DDS compared to JMS( 2KB messages )
Page 37 and 38: Message bus architecturesJMSEnterpr
Page 39 and 40: Discovery Service• DDS provides t
Page 41 and 42: Data PersistenceA standalone servic
Page 43 and 44: Durable Writers• Durable Writers
Page 45 and 46: Last value cache• A last-value ca
Page 47 and 48: DDS Real-Time Recording Service•
Page 49 and 50: #5 Natural with SOA building blocks
Page 51 and 52: Complex Event Engine Integration•
Page 53 and 54: Agenda• Context: Middleware Techn
Page 55 and 56: Middleware-based Message-Centric Sy
Page 57 and 58: Middleware-based Data-Centric Syste
Page 59 and 60: DDS Global Data• Address in Globa
Page 61 and 62: Example: Publication// Entities cre
Page 63 and 64: How to Get Data? (Listener-Based)//
Page 65 and 66: Listeners, Conditions & WaitSetsMid
Page 67 and 68: Listeners, Conditions and Statuses
Page 69 and 70: Hands-on Example (C++)MyType.slnMyT
Page 71 and 72: Components/Mechanics of the GDSAppl
Page 73 and 74: Global Data Space / Global State•
Page 75 and 76: Domain and Domain ParticipantsUsing
Page 77 and 78: QoS: OwnershipSpecifies whether mor
Page 79 and 80: Configure the Cache Management• C
Page 81 and 82: lifespan_pubQoS: Lifespanlifespan_s
Page 83 and 84: Subscriptions: By Topic, Subject, C
Page 85: Cache Management in Action• Topic
Page 89 and 90: Confirmed Reliability INo packet lo
Page 91 and 92: Configure Notifications, Fault Dete
Page 93 and 94: QoS: Liveliness -Type and Durationl
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DDS Tutorial -- Part II Hands On - OMG

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