Fernando Crespo Sanchez

Product Architect

Check out the posts written by Fernando Crespo Sanchez

Don’t Miss It: Boston Connext Conference is Next Week!

The first Connext Conference on the East Coast is right around the corner and I could not be more excited about it. In case you haven’t heard, the Connext Conference is a two-day event that brings together users, developers and industry partners to share information on the latest technical information and developer experiences in building real-world Industrial IoT systems.

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Where Is My Data?

A few weeks ago I ordered something from Amazon.com. Something that I needed soon-ish. I am a loyal Amazon customer and Amazon Prime member, and I've never experienced a problem with timely delivery of my order. Unfortunately, my experience with this order was different. It was a mess.

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Unbounded Support For Sequences and Strings

When we first designed Connext DDS, deterministic memory allocation was on the top of our priority list. At that time most of our customers used small data types such as sensor and track data. We decided to go with an approach in which we pre-allocated the samples in the DataWriter and DataReader queues to their maximum size. For example:

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XTypes: Taking Type Evolution To The Next Level

RTI Connext DDS 5.0.0 provided limited support for type evolution by implementing Extensible type extensibility as defined in the "Extensible and Dynamic Topic Types for DDS" specification, commonly referred to as the DDS-XTypes spec.

With Extensible type extensibility, the types in a DDS system can evolve by adding new elements at the end.

For example, let's assume a GPS vehicle tracking system. In a first implementation, the VehicleData type may provide position information such as latitude and longitude:

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