What Is DDS ?
THE PROVEN DATA CONNECTIVITY STANDARD FOR THE INTERNET OF THINGS
The Data-Distribution Service ( DDS ) is a middleware protocol and API standard for data-centric connectivity from the Object Management Group . It integrates the components of a system together , providing lowlatency data connectivity , extreme reliability , advanced security , and a scalable architecture that business and mission-critical Internet of Things ( IoT ) applications need .
WHAT IS DDS ?
In a distributed system , middleware is the software layer that lies between the operating system and applications . It enables the various components of a system to more easily communicate and share data . It simplifies the development of distributed systems by letting software developers focus on the specific purpose of their applications rather than the mechanics of passing information between applications and systems .
Application
Platform Middleware
API C , C ++, Java , C #, ...
PRESENTATION Data , Topics , Types , Serialization , QoS , Cache , Filtering , ...
PROTOCOL Session , Reliability , QoS , Discovery , ...
OPERATING SYSTEM Windows , Unix ( Linux , MacOS ), VxWorks , Android , ...
NETWORK UDP , TCP , STCP , ...
LINK / PHYSICAL LAYER Ethernet , IEEE 802.11 , 3G , 4G
The DDS Middleware is a software layer that abstracts the Application from the details of the operating system , network transport , and low-level data formats . The same concepts and APIs are provided in different programming languages allowing applications to exchange information across of operating systems , languages , and processor architectures . Low-level details like data wire format , discovery , connections , reliability , protocols , QoS management , etc . are manage by the middleware .
DATA CENTRICITY
There are many communications middleware standards and products . DDS is uniquely data-centric , which is ideal for the Internet of Things . Most middleware works by sending information between applications and systems . Data centricity ensures that all messages include the contextual information an application needs to understand the data it receives .
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