1,197 research outputs found
Microservices: Granularity vs. Performance
Microservice Architectures (MA) have the potential to increase the agility of
software development. In an era where businesses require software applications
to evolve to support software emerging requirements, particularly for Internet
of Things (IoT) applications, we examine the issue of microservice granularity
and explore its effect upon application latency. Two approaches to microservice
deployment are simulated; the first with microservices in a single container,
and the second with microservices partitioned across separate containers. We
observed a neglibible increase in service latency for the multiple container
deployment over a single container.Comment: 6 pages, conferenc
Size Matters: Microservices Research and Applications
In this chapter we offer an overview of microservices providing the
introductory information that a reader should know before continuing reading
this book. We introduce the idea of microservices and we discuss some of the
current research challenges and real-life software applications where the
microservice paradigm play a key role. We have identified a set of areas where
both researcher and developer can propose new ideas and technical solutions.Comment: arXiv admin note: text overlap with arXiv:1706.0735
Microservice Transition and its Granularity Problem: A Systematic Mapping Study
Microservices have gained wide recognition and acceptance in software
industries as an emerging architectural style for autonomic, scalable, and more
reliable computing. The transition to microservices has been highly motivated
by the need for better alignment of technical design decisions with improving
value potentials of architectures. Despite microservices' popularity, research
still lacks disciplined understanding of transition and consensus on the
principles and activities underlying "micro-ing" architectures. In this paper,
we report on a systematic mapping study that consolidates various views,
approaches and activities that commonly assist in the transition to
microservices. The study aims to provide a better understanding of the
transition; it also contributes a working definition of the transition and
technical activities underlying it. We term the transition and technical
activities leading to microservice architectures as microservitization. We then
shed light on a fundamental problem of microservitization: microservice
granularity and reasoning about its adaptation as first-class entities. This
study reviews state-of-the-art and -practice related to reasoning about
microservice granularity; it reviews modelling approaches, aspects considered,
guidelines and processes used to reason about microservice granularity. This
study identifies opportunities for future research and development related to
reasoning about microservice granularity.Comment: 36 pages including references, 6 figures, and 3 table
Digital Preservation Services : State of the Art Analysis
Research report funded by the DC-NET project.An overview of the state of the art in service provision for digital preservation and curation. Its focus is on the areas where bridging the gaps is needed between e-Infrastructures and efficient and forward-looking digital preservation services. Based on a desktop study and a rapid analysis of some 190 currently available tools and services for digital preservation, the deliverable provides a high-level view on the range of instruments currently on offer to support various functions within a preservation system.European Commission, FP7peer-reviewe
Toward a conceptual framework for designing sustainable cyber-physical system architectures: A systematic mapping study
Cyber-physical systems (CPS) represent devices whose components enable interaction between machines and processes. One of the biggest challenges of these systems today is the ability to adjust to changes at the time of execution as they are implemented in environments with a multidimensional complexity, this challenge is currently addressed from the design of the systems themselves by integrating sustainability. With this problem in mind, the present document describes a systematic mapping study of the literature with the goal of demonstrating the current panorama of the frameworks, designs, and/or models used at the time of initiating the development of a cyber-physical system. As a result, it has been concluded that there is a lack of guidelines to construct sustainable, and evolvable cyber-physical systems. To address these issues, a framework for designing sustainable CPS architectures is outlined
Improving lifecycle query in integrated toolchains using linked data and MQTT-based data warehousing
The development of increasingly complex IoT systems requires large
engineering environments. These environments generally consist of tools from
different vendors and are not necessarily integrated well with each other. In
order to automate various analyses, queries across resources from multiple
tools have to be executed in parallel to the engineering activities. In this
paper, we identify the necessary requirements on such a query capability and
evaluate different architectures according to these requirements. We propose an
improved lifecycle query architecture, which builds upon the existing Tracked
Resource Set (TRS) protocol, and complements it with the MQTT messaging
protocol in order to allow the data in the warehouse to be kept updated in
real-time. As part of the case study focusing on the development of an IoT
automated warehouse, this architecture was implemented for a toolchain
integrated using RESTful microservices and linked data.Comment: 12 pages, worksho
On the Empirical Evidence of Microservice Logical Coupling. A Registered Report
[Context] Coupling is a widely discussed metric by software engineers while
developing complex software systems, often referred to as a crucial factor and
symptom of a poor or good design. Nevertheless, measuring the logical coupling
among microservices and analyzing the interactions between services is
non-trivial because it demands runtime information in the form of log files,
which are not always accessible. [Objective and Method] In this work, we
propose the design of a study aimed at empirically validating the Microservice
Logical Coupling (MLC) metric presented in our previous study. In particular,
we plan to empirically study Open Source Systems (OSS) built using a
microservice architecture. [Results] The result of this work aims at
corroborating the effectiveness and validity of the MLC metric. Thus, we will
gather empirical evidence and develop a methodology to analyze and support the
claims regarding the MLC metric. Furthermore, we establish its usefulness in
evaluating and understanding the logical coupling among microservices
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