Introduction to Fast-DDS: eProsima's High-Performance Open-Source DDS Implementation

Forum topic · ✨步子哥 · 2025-09-25

Summary

Fast-DDS is an open-source implementation of the OMG DDS (Data Distribution Service) standard developed by eProsima, and serves as one of the default DDS middlewares for ROS 2, integrated via the RMW_FastRTPS_cpp layer. This post introduces Fast-DDS's main features, including low latency and high throughput, multiple QoS policies for reliable data transfer, scalability to thousands of distributed nodes, cross-platform support for Windows, Linux, and macOS, and built-in security features such as authentication, encryption, and access control. It also covers technical highlights like full OMG DDS API compliance, an optimized discovery protocol, the graphical Fast DDS Monitor tool, and APIs for C++ and Java. The article describes Fast-DDS's role in ROS 2 (default implementation, RMW integration, and QoS configuration) and lists key resources: the GitHub repository (https://github.com/eProsima/Fast-DDS), official documentation (https://fast-dds.docs.eprosima.com/), community channels (Discord, ROS Discourse, Stack Overflow), and installation options including binary packages, source builds, and Docker containers.

Introduction

Fast-DDS is an open-source DDS (Data Distribution Service) implementation developed by eProsima, fully compliant with the OMG DDS standard. As one of the default DDS implementations for ROS 2, Fast-DDS integrates with ROS 2 through RMW_FastRTPS_cpp, providing high-performance and reliable data distribution for robotics applications.

Key Features

High performance: Low latency and high throughput, with optimized network protocols and memory management
Reliability: Multiple QoS policies to ensure reliable data transmission
Scalability: Supports large-scale distributed systems, scaling to thousands of nodes
Cross-platform: Supports Windows, Linux, macOS, and other operating systems
Security: Provides authentication, encryption, and access control

Technical Highlights

DDS standard compliance: Fully conforms to the OMG DDS standard with a complete DDS API
Flexible QoS policies: Multiple quality-of-service configurations for different scenarios
Efficient discovery protocol: Optimized node discovery mechanism that reduces network overhead
Monitoring tools: Graphical monitoring via Fast DDS Monitor
Rich APIs: Support for C++, Java, and other languages

Usage in ROS 2

Default DDS implementation: Provides a stable and reliable communication foundation for ROS 2
RMW integration: Seamless integration via RMW_FastRTPS_cpp, supporting all ROS 2 communication mechanisms
QoS configuration: Supports ROS 2 QoS policies that can be tuned to application needs

Resources

GitHub repository: https://github.com/eProsima/Fast-DDS
Official documentation: https://fast-dds.docs.eprosima.com/
Community support: Discord, ROS Discourse, Stack Overflow
Installation: Binary packages, source build, Docker containers

*Based on a comprehensive assessment of the latest practices as of 2025.*