![]() ![]() Tailorability of the process makes it applicable in many contexts such as the evaluation and Notifyr alternative upgrade#Risk of failure of the system, improves the knowledge about the system and its context,Īnd allows the evaluation team to tailor the process to fit their needs and budget.įurthermore it also contributes to upgrade the reuse maturity of the organization and the The process described in this work provides severalĪdvantages to the organizations working with OTS software. Propose an iterative solution, based on the PECA process created by the SoftwareĮngineering Institute, for the evaluation and selection of communication middlewareĪlternatives for ACS, so the framework can be used by modern observatories, specificallyĬherenkov Telescope Array (CTA). The increasingly demanding requirements of emergent observatories. Unfortunately the CORBA compliant middleware is struggling to keep up with Notifyr alternative software#ALMA Common Software (ACS) is an open-source softwareįramework for the development of distributed control systems that is based on CORBA Systems makes it difficult and even infeasible to build them from scratch so the softwareĭevelopers rely on Off-The-Shelf (OTS) software, such as communication middleware, for (e.g., data acquisition, hardware control and system monitoring). Modern observatories develop distributed software systems to support their operations A benchmark is presented, comparing the performance of both implementations. We describe the integration of DDS into the ACS CORBA environment, replacing the Notify Service. The Data Distribution Service (DDS) provides an alternative standard for publisher-subscriber communication for real-time systems, offering better performance and featuring decentralized message processing, scalable peer-to-peer communication, and a wide set of QoS policies. The Notify Service has several limitations, such as being resource intensive and not scaling well with the number of subscribers. This is very useful for handling asynchronous messages between components, and fosters data-centric archi-tectures and de-coupling between different components of an application. ![]() Based on the CORBA Notify Service, it allows the implementation of applications based on the publisher-subscriber pattern. One of these services is the Notification Channel. ACS, based on CORBA, offers basic services and common design patterns. The ALMA Common Software (ACS) provides the infrastructure for the Atacama Large Millimeter Array and other projects. ![]()
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