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.

You can contribute by commenting on existing best practice articles, or by creating new best practices here (requires logging in).

Use Multicast for One-to-Many Data

If you have one DataWriter that is sending data to more than one or two DataReaders, you can get better overall throughput performance by enabling multicast.

Wed, 02/26/2014 - 16:01

16739 reads — 0 comments

Tune Your OS for Performance

Performance

Most operating systems are not configured for high-performance networking out of the box.

Fri, 07/19/2013 - 15:28

10984 reads — 0 comments

Define Topic Names in a Single Shared Location

Defining Topic names in source code in each application is readable in example code, but is not ideal for a real system.

Fri, 06/21/2013 - 14:38

10314 reads — 0 comments

Use Keyed Topics

For each data type, indicate to RTI Connext DDS the fields that uniquely identify the data object.

Mon, 06/17/2013 - 14:50

20466 reads — 0 comments

Fully Define Your DDS Types; Do Not Rely on Opaque Bytes or Other Custom Encapsulations

Mapping all of your data model to opaque bytes or strings (even XML strings) is a bad practice for several reasons, some obvious and some subtle:

Tue, 06/04/2013 - 11:53

9553 reads — 0 comments

Register the Instance and Use the InstanceHandle When Writing for Better Performance

When you write keyed data, the RTI Connext DDS has to send the unique identifier of each instance along with the data.

Tue, 05/07/2013 - 15:18

11860 reads — 0 comments

Leave Data in the Middleware Queue When Possible

You have two options for how to access data that a DataReader receives.

Tue, 05/07/2013 - 15:14

6630 reads — 0 comments

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