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What are Communications Middleware and DDS?
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What are Communications Middleware and DDS?

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Communications Middleware is computer software that enables two otherwise separate software components, processes, and/or applications to exchange information, either within one device, or between …

Communications Middleware is computer software that enables two otherwise separate software components, processes, and/or applications to exchange information, either within one device, or between multiple devices. It is a specific kind of Middleware: the layer that lies between the operating system (Linux, MAC, Unix, Windows, etc.) and system applications (accounting software, media players, office productivity suites, etc.) that allows for communications. Communications Middleware may be built into or added to one or both of the applications. Sometimes Communications Middleware is referred to as “plumbing” because it is the piece that connects two (or more) applications and allows data to pass through.

The purpose of Communications Middleware is to simplify the designing, programming, and managing of applications by streamlining the way these applications receive and process data.

Communications Middleware is used in a variety of software systems, from mobile devices (PDAs, Android phones, iPads, etc.) to enterprise and database systems. The equipment in these systems varies in screen and visual display capabilities, bandwidth capacities, and processing power. Communications Middleware facilitates communications between these differing devices. Communications Middleware can understand and process multiple different operating languages (C, C++, Java, PHP, Ruby on Rails, etc.). We can use a cell phone and a PC here as an example. They both function in vastly different capacities, but with Communications Middleware, are able to “talk” to and “work with” each other. This holds true for devices of similar capacities with different operating systems as well (say a Mac talking to a PC, or your accounting software communicating with your word processing software).

Companies and organizations are increasingly integrating previously independent applications with new developments and technologies; building enterprise-wide information systems. This integration process surrounds legacy applications; old or out of date software. Many of these legacy applications can only be used through their specific interface, and modifications prove costly or otherwise prohibitive. This can occur when software needs to be upgraded, or when one company acquires or takes over another company and their different systems now need to work together. Communications Middleware can link information from departmental databases such as payroll, sales, and accounting, or databases housed in multiple geographic locations into one centralized system, even if these databases store and process information differently.

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  • 1. December 2011What are CommunicationsMiddleware and DDS?1
  • 2. Contents What is Communications Middleware? What is DDS? How does DDS Work? What are the benefits of DDS? Industries Key Points Contact Info
  • 3. What is Communications Middleware?CommunicationsMiddleware is computersoftware that enables twootherwise separatesoftware components,processes, and/orapplications to exchangeinformation, either withinone device, or betweenmultiple devices.
  • 4. What is Communications Middleware?The purpose ofCommunicationsMiddleware is tosimplify the designing,programming, andmanaging of softwareapplications bystreamlining the waythese applicationsreceive and processdata.
  • 5. CommunicationsMiddleware is usedin a wide variety ofsoftware systems,PDAs, Androidphones, iPads,enterprise anddatabase systemsetc.
  • 6. What is Communications Middleware?Consider a cell phone and a PC.They both function in vastlydifferent capacities, but withCommunications Middlewareare able to “talk” to and “workwith” each other. This holds truefor devices of similar capacitieswith different operating systemsas well (say a Mac talking to a The bottom layer consists of two or morePC, or your accounting software different devices, each using their own versioncommunicating with your word of an operating system. When we add middleware, those different devices can nowprocessing software). communicate and use the same application, even though they use different operating systems.
  • 7. What is Communications Middleware?Communications Middlewarecan link information fromdepartmental databases suchas payroll, sales, andaccounting, or databaseshoused in multiplegeographic locations into onecentralized system, even ifthese databases store andprocess informationdifferently.
  • 8. Why Use Middleware?Using a Communications Middleware: Reduces system complexity Provides application portability across differentoperating systems and hardware Reduces development cost Simplifies the resulting application code
  • 9. What is DDS? Data Distribution Service(DDS) is a type ofCommunications Middlewarewhose concept wasstandardized and is currentlymanaged by the ObjectManagement Group (OMG) DDS simplifies softwaresystems. DDS reduces riskand costs throughdevelopment, integration,deployment, and the lifetimemaintenance of distributedsoftware systems.
  • 10. How Does DDS Work? Publishing on Topic A Subscribing to Topic A Publishing on Topic B Subscribing to Topic B Subscribing to Topic ADDS is in charge of transferring information: Information is transferred from publishers (producers and senders of messages) to subscribers (consumers and receivers of messages). Subscribers and publishers employing DDS can use different platforms or operating systems and still communicate with each other. Exchanges can take place through tens of thousands of devices at the same time, each one of which can be publishers, subscribers, or both simultaneously.
  • 11. How Does DDS Work? Systems that use DDS to communicate can do so independently of each other  They do not rely on each other’s systems to send and process information. DDS automatically knows how to send and receive messages with other DDS users.  Simplifies data distribution  Lessens the code required to perform message delivery (and less code means more efficiency)  Saves time
  • 12. How Does DDS Work? Each version of DDS can perform the same minimum set of functions in the same way with the same results  This saves costs and avoids vendor lock-in DDS works in “real time”: With very low overhead and efficient processing, messages are sent with minimal latencies DDS has a flexible architecture that is also scalable: it can adapt to processing both large and small amounts of data.
  • 13. What are the Benefits of DDS? DDS ensures consistency: Users of DDS can make changes to one system without the other system being adversely affected. DDS is Interoperable: Interoperability is the ability of two or more systems to exchange information. Every implementation of DDS can “talk” with every other type of DDS.
  • 14. What are the Benefits of DDS? DDS filters data for unique users: Each user only receives the information they need (or are intended) to receive.  Consider online banking. The information is available to anyone who can access the web, as long as they have the correct username and password. DDS can be used wirelessly to communicate information  For example: handling secure transactions via Smartphones and financial institutions, or scanning and tracking systems for package delivery systems. DDS provides high performing, reliable communications over un-reliable wireless networks.
  • 15. What are the Benefits of DDS? Publishing on Topic A Subscribing to Topic A Offering RELIABLE Requesting RELIABLE communications communications Publishing on Topic A Subscribing to Topic A Offering BEST_EFFORT Requesting BEST_EFFORT communications communications Publishing on Topic B Subscribing to Topic B Offering BEST_EFFORT Requesting RELIABLE communications communicationsDDS is reliable and always availableInteractions with other services or applications are independent from networkservices, meaning they are always available for users (the server can’t be “down”because of too many users, etc.) Data is cached by the publisher until allsubscribers have received the information, so even if the network is unavailablethe information is not lost. The publisher and subscriber merely try again.
  • 16. IndustriesDDS is widely adopted across a variety of industries, including some ofthe most mission-critical systems within the United States Department ofDefense. DDS is also being used in a growing number of commercialapplications, including smart vehicle control, high-speed stock trading,consumer electronics, telecommunications, manufacturing, powergeneration, medical devices, and simulation.
  • 17. Key Points DDS simplifies transferring information from one source to another, reducing risk and cost. DDS streamlines communications processes among different system types, making program development easier, faster, and more reliable. Subscribers and publishers employing DDS can use different platforms or operating systems and still communicate with each other. Exchanges can take place through countless devices at the same time, each one of which can be publishers, subscribers, or both simultaneously. DDS saves your business precious time, money, and resources through streamlining the communications process.
  • 18. About Twin Oaks ComputingTwin Oaks Computing, Inc. is a company dedicated to developing and delivering quality software solutions. Our staff has extensive experience developing and supporting robust communication architectures. We leverage this world-class technical experience to provide innovative and useful communication software systems. We build the software that collects, manages, and distributes information in a wide range of industries. Our software is in use around the world supporting critical missions.Equally important, our clients are amazed and totally satisfied with our super responsive customer service. One of our early customers in China states,“Twin Oaks Computing [provided] great porting work during very short period of time (each porting for about 2-3 weeks). This made me really appreciate the portability framework of CoreDX DDS.”- Mr. Huang“There is nothing I don’t like about working with Twin Oaks Computing. In particular, working with Nina is a singular pleasure in today’s world of technical support - she is very responsive and helpful.”- Dr. Michael MezzinoSuper-small and blazingly fast, our flagship product, CoreDX DDS is the leading Publish-Subscribe middleware available for small-footprint and embedded systems.For more information please visit www.twinoakscomputing.com.
  • 19. For Additional Information