DDS Best Practices

RTI Connext DDS is a powerful platform that abstracts many difficult parts of distributed system design. However, like any powerful technology, it must be used in optimal ways to get the most out of it. There may be multiple ways to accomplish the same goal, but the approaches can differ in performance or resource utilization. These best practices provide rules on designing your distributed system and architecting applications that use RTI Connext DDS.

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To use the Modern C++ Connext DDS API correctly you need to understand its type system. Most types in the API belong into two categories:

- Value types

- Reference types

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For better performance and reduced network usage, use individual Permissions Files for each

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QoS Profile composition is a new feature added to Connext DDS 6. This feature allows QoS Profiles to be constructed from other profiles using composition. Learn the details of this feature and how to properly use it.
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The following references summarize key best practices when using DDS to integrate distributed systems:

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Use the bind_and_manage_listener call to avoid managing Entity and listener deletion in your application.
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Entities, such as the DomainParticipant or the DataReader should never be created as pointers (i.e. using new). They implement reference semantics, and should be declared as regular variables.
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For better reusability and maintenance of your code, design your QoS as sets of reusable profiles instead of tuning each data flow separately.

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