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This paper describes our experience with extending ExSched, an operating system independent external CPU scheduler framework for real-time systems, with support for mixed criticality. We used the so-called adaptive mixed criticality (AMC) scheme as a starting point for mixed criticality. We extended that scheme from two to more than two criticality levels and complemented it with specified behavior...
Decision guidance models are a means for design space exploration and documentation. In this paper, we present decision guidance models for microservice monitoring. The selection of a monitoring system is an essential part of each microservice architecture due to the high level of dynamic structure and behavior of such a system. We present decision guidance models for generation of monitoring data,...
Distributed process execution is a scalable solution for implementing workflows that deal with many devices in the Internet of Things (IoT). In hierarchical network structures the execution of activities and subprocesses can be moved closer to the computing edge onto specialized devices while still preserving data security. However mobility, resource constraints and varying connectivity of devices...
In this paper we present how architecting IoT applications using an Architecture Description Language (ADL), SysADL, that supports: (i) the architectural modeling of heterogeneous IoT devices, (ii) easy modification of the architectural description, (iii) specifying scalable architectural model to satisfy the scalability non-functional property of the architectural description to allow increasing...
Physical telerehabilitation services over the Internet allow physiotherapists to engage in remote consultation with patients at their homes, improving the quality of care and reducing costs. Traditional visual approaches, such as webcams and videophones, are limited in terms of precision of assessment and support for assistance with exercises. In this paper, we present a Physical Telerehabilitation...
Microservice architectures provide small services that may be deployed and scaled independently of each other, and may employ different middleware stacks for their implementation. Microservice architectures intend to overcome the shortcomings of monolithic architectures where all of the application's logic and data are managed in one deployable unit. We present how the properties of microservice architectures...
Modern software systems are exposed to various types of uncertainties, such as dynamics in the available resources that are difficult to predict and goals that may change during operation. Self-adaptation equips a software system with a feedback loop that collects additional knowledge at runtime, monitors the system and adapts it when necessary to maintain its quality goals, regardless of uncertainties...
Setting up an experimental evaluation for architecture-based Software Performance Engineering (SPE) approaches requires enormous efforts. This includes the selection and installation of representative applications, usage profiles, supporting tools, infrastructures, etc. Quantitative comparisons with related approaches are hardly possible due to limited repeatability of previous experiments by other...
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