About DDS
Benefits of the DDS approach
Simple & Powerful Data-Centric Pub-Sub Model
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Reduces Risk and Development/Integration Time
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Enhances effective performance by delivering the right data to the right place with the right QoS
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Standards-based: API and Protocol
1. Unsurpassed Performance and Scalability
Priority-aware no choke-points architecture
2. Builds higher quality systems and lowers TCO
Built-in high-value capabilities
Handles Availability & other “hard problems”
Easy to maintain and Evolve
Leverage multicore
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DDS Interoperable Wire Protocol uses UDP
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Low overhead, Unreliable protocol
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DDS allows application to choose RELIABLE or BEST EFFORT communications
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RELIABLE setting adds hand shaking and retransmission functions to guarantee data delivery
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BEST EFFORT setting uses default UDP protocol: no guarantee of data delivery
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Retransmission of data is dependent on additional QoS settings
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History Depth must be adequate to save samples that may need to be retransmitted
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Resource Limits may be applied to force the Publishing application to block until the Subscribing application can handle additional data
