Currently, anomaly detection is an increasingly important issue in terms of research work and applications in production systems.Information about system malfunction allows the implementation of precise diagnostic and corrective actions.Two main approaches based on statistical analysis and machine learning techniques are used in anomaly detection systems, which are computationally complex, especially when dealing with high traffic volumes in computer network.In this paper, the limitation of the sampling frequency for network traffic parameters is proposed as a technique to reduce the computational complexity of anomaly detection methods.The proposed approach has been verified in a real network link monitoring system for a mediumsized ISP.The results obtained are promising and can be used to build a production system that enables the development of early warning systems in the area of security incident detection dedicated to high-speed access links.

The aim of this contribution is to analyse practical aspects of the use of REST APIs and gRPC to realize communication tasks in applications in microservice-based ecosystems. On the basis of performed experiments, classes of communication tasks, for which given technology performs data transfer more efficiently, have been established. This, in turn, allows formulation of criteria for the selection of appropriate communication methods for communication tasks to be performed in an application using microservices-based architecture.

In this work, the development of virtual reality software for “industrial applications” is considered. It is argued that, in this context, the vast experience from the development of computer games cannot be used directly. Especially, the specific nature of solutions dedicated to industrial applications requires taking into account their specificities, needs, and limitations of VR. This brings about the formulation of a domain-specific approach to creation of VR-related courses for the industry. As an example, the development of course concerning the operation of a professional 3D printer, which is used in industry, as well as in prototyping, is discussed. In particular, it is used to illustrate implementation of UI and UX aspects of the developed VR-environment.