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Auflistung Softwaretechnik-Trends 39(3) - 2019 nach Autor:in "Adolf, Marc"
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- KonferenzbeitragImproving Service Availabiliy with Rule-Based Adaptation(Softwaretechnik-Trends Band 39, Heft 3, 2019) Adolf, Marc; Jung, Reiner; Blümke, LarsSelf-adaptive software systems change their deployment and configuration to address changing user behavior and workloads. Such systems follow a MAPEK approach to observe and analyze the system, and subsequently plan and execute changes. They use operations, like the (de-)replication and migration of components, to reconfigure the system. During an adaptation, some services might become unavailable when services are replicated or migrated arbitrarily. This can cause interruptions to cross service transactions and temporary service malfunctions. While some E-commerce platforms consider this acceptable, it is irritating to the consumer. In case of safety critical systems, like medication systems, the system must be serviceable during the transition from the old to the new configuration. In this paper, we present a rule-based approach for adaptation actions. Our approach allows to address adaptation constraints on a abstract level and decouples the constrains from setup scripts often used in container environments. Furthermore, we evaluated the feasibility of our approach and illustrate its ability to adapt a component based web system safely.
- KonferenzbeitragThe JPetStore Suite: A concise Experiment Setup for Research(Softwaretechnik-Trends Band 39, Heft 3, 2019) Jung, Reiner; Adolf, MarcViable experiment suites are in high demand by scientists in software engineering and especially for software quality. In particular, easy to understand yet feature rich case studies are needed to assess approaches, methods and tools for software qualities, like performance, usability, privacy and security. Several attempts have been made to create reusable setups. Unfortunately, they focus on the software alone, without or limited documentation, workloads, and prepared deployments, harming reusability and repeatability. This hinders our research. To circumvent these limitations, we created a JPetStore based experiment suite. Our suite includes distributed and single service variants with and without instrumentation, proper workload drivers, and experiment setups. All parts are documented to support scientists creating experiments. Using our suite fosters comparability and reproducibility of research making it more influential. Furthermore, our suite can be used as blue print for more complex suites.