Volume

OASIcs, Volume 78

Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)



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Event

Microservices 2017/2019, February 19-21, 2019, University of Applied Sciences and Arts Dortmund, Germany

Editors

Luís Cruz-Filipe
  • University of Southern Denmark, Denmark
Saverio Giallorenzo
  • University of Southern Denmark, Denmark
Fabrizio Montesi
  • University of Southern Denmark, Denmark
Marco Peressotti
  • University of Southern Denmark, Denmark
Florian Rademacher
  • University of Applied Sciences and Arts Dortmund, Germany
Sabine Sachweh
  • University of Applied Sciences and Arts Dortmund, Germany

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Document
Complete Volume
OASIcs, Volume 78, Microservices 2017/2019, Complete Volume

Authors: Luís Cruz-Filipe, Saverio Giallorenzo, Fabrizio Montesi, Marco Peressotti, Florian Rademacher, and Sabine Sachweh


Abstract
OASIcs, Volume 78, Microservices 2017/2019, Complete Volume

Cite as

Luís Cruz-Filipe, Saverio Giallorenzo, Fabrizio Montesi, Marco Peressotti, Florian Rademacher, and Sabine Sachweh. OASIcs, Volume 78, Microservices 2017/2019, Complete Volume. In Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019). Open Access Series in Informatics (OASIcs), Volume 78, pp. 1-98, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)


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@Proceedings{cruzfilipe_et_al:OASIcs.Microservices.2017-2019,
  title =	{{OASIcs, Volume 78, Microservices 2017/2019, Complete Volume}},
  booktitle =	{Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)},
  pages =	{1--98},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-137-5},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{78},
  editor =	{Cruz-Filipe, Lu{\'\i}s and Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian and Sachweh, Sabine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2017-2019},
  URN =		{urn:nbn:de:0030-drops-118301},
  doi =		{10.4230/OASIcs.Microservices.2017-2019},
  annote =	{Keywords: OASIcs, Volume 78, Microservices 2017/2019, Complete Volume}
}
Document
Front Matter
Front Matter, Table of Contents, Preface, Conference Organization

Authors: Luís Cruz-Filipe, Saverio Giallorenzo, Fabrizio Montesi, Marco Peressotti, Florian Rademacher, and Sabine Sachweh


Abstract
Front Matter, Table of Contents, Preface, Conference Organization

Cite as

Luís Cruz-Filipe, Saverio Giallorenzo, Fabrizio Montesi, Marco Peressotti, Florian Rademacher, and Sabine Sachweh. Front Matter, Table of Contents, Preface, Conference Organization. In Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019). Open Access Series in Informatics (OASIcs), Volume 78, pp. 0:i-0:xiv, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)


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@InProceedings{cruzfilipe_et_al:OASIcs.Microservices.2017-2019.0,
  author =	{Cruz-Filipe, Lu{\'\i}s and Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian and Sachweh, Sabine},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)},
  pages =	{0:i--0:xiv},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-137-5},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{78},
  editor =	{Cruz-Filipe, Lu{\'\i}s and Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian and Sachweh, Sabine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2017-2019.0},
  URN =		{urn:nbn:de:0030-drops-118225},
  doi =		{10.4230/OASIcs.Microservices.2017-2019.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
Using Microservices to Customize Multi-Tenant SaaS: From Intrusive to Non-Intrusive

Authors: Hui Song, Phu H. Nguyen, and Franck Chauvel


Abstract
Customization is a widely adopted practice on enterprise software applications such as Enterprise resource planning (ERP) or Customer relation management (CRM). Software vendors deploy their enterprise software product on the premises of a customer, which is then often customized for different specific needs of the customer. When enterprise applications are moving to the cloud as mutli-tenant Software-as-a-Service (SaaS), the traditional way of on-premises customization faces new challenges because a customer no longer has an exclusive control to the application. To empower businesses with specific requirements on top of the shared standard SaaS, vendors need a novel approach to support the customization on the multi-tenant SaaS. In this paper, we summarize our two approaches for customizing multi-tenant SaaS using microservices: intrusive and non-intrusive. The paper clarifies the key concepts related to the problem of multi-tenant customization, and describes a design with a reference architecture and high-level principles. We also discuss the key technical challenges and the feasible solutions to implement this architecture. Our microservice-based customization solution is promising to meet the general customization requirements, and achieves a balance between isolation, assimilation and economy of scale.

Cite as

Hui Song, Phu H. Nguyen, and Franck Chauvel. Using Microservices to Customize Multi-Tenant SaaS: From Intrusive to Non-Intrusive. In Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019). Open Access Series in Informatics (OASIcs), Volume 78, pp. 1:1-1:18, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)


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@InProceedings{song_et_al:OASIcs.Microservices.2017-2019.1,
  author =	{Song, Hui and Nguyen, Phu H. and Chauvel, Franck},
  title =	{{Using Microservices to Customize Multi-Tenant SaaS: From Intrusive to Non-Intrusive}},
  booktitle =	{Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)},
  pages =	{1:1--1:18},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-137-5},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{78},
  editor =	{Cruz-Filipe, Lu{\'\i}s and Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian and Sachweh, Sabine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2017-2019.1},
  URN =		{urn:nbn:de:0030-drops-118230},
  doi =		{10.4230/OASIcs.Microservices.2017-2019.1},
  annote =	{Keywords: Customization, Software-as-a-Service (SaaS), Microservices, Multi-tenancy, Cloud, Reference Architecture}
}
Document
Experience Report: First Steps towards a Microservice Architecture for Virtual Power Plants in the Energy Sector

Authors: Manuel Wickert, Sven Liebehentze, and Albert Zündorf


Abstract
Virtual Power Plants provide energy sector stakeholders a useful abstraction for distributed energy resources by aggregating them. Software systems enabling this are critical infrastructure and must handle a fast-growing number of distributed energy resources. Modern architecture such as Microservice architecture can therefore be a good choice for dealing with such scalable systems where changing market and regulation requirements are part of every day business. In this report, we outline first experiences gained during the change from the existing Virtual Power Plant software monolith to Microservice architecture.

Cite as

Manuel Wickert, Sven Liebehentze, and Albert Zündorf. Experience Report: First Steps towards a Microservice Architecture for Virtual Power Plants in the Energy Sector. In Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019). Open Access Series in Informatics (OASIcs), Volume 78, pp. 2:1-2:10, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)


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@InProceedings{wickert_et_al:OASIcs.Microservices.2017-2019.2,
  author =	{Wickert, Manuel and Liebehentze, Sven and Z\"{u}ndorf, Albert},
  title =	{{Experience Report: First Steps towards a Microservice Architecture for Virtual Power Plants in the Energy Sector}},
  booktitle =	{Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)},
  pages =	{2:1--2:10},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-137-5},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{78},
  editor =	{Cruz-Filipe, Lu{\'\i}s and Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian and Sachweh, Sabine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2017-2019.2},
  URN =		{urn:nbn:de:0030-drops-118247},
  doi =		{10.4230/OASIcs.Microservices.2017-2019.2},
  annote =	{Keywords: Microservices, VPP, Virtual Power Plants, Domain Driven Design}
}
Document
Exploring Maintainability Assurance Research for Service- and Microservice-Based Systems: Directions and Differences

Authors: Justus Bogner, Adrian Weller, Stefan Wagner, and Alfred Zimmermann


Abstract
To ensure sustainable software maintenance and evolution, a diverse set of activities and concepts like metrics, change impact analysis, or antipattern detection can be used. Special maintainability assurance techniques have been proposed for service- and microservice-based systems, but it is difficult to get a comprehensive overview of this publication landscape. We therefore conducted a systematic literature review (SLR) to collect and categorize maintainability assurance approaches for service-oriented architecture (SOA) and microservices. Our search strategy led to the selection of 223 primary studies from 2007 to 2018 which we categorized with a threefold taxonomy: a) architectural (SOA, microservices, both), b) methodical (method or contribution of the study), and c) thematic (maintainability assurance subfield). We discuss the distribution among these categories and present different research directions as well as exemplary studies per thematic category. The primary finding of our SLR is that, while very few approaches have been suggested for microservices so far (24 of 223, ∼11%), we identified several thematic categories where existing SOA techniques could be adapted for the maintainability assurance of microservices.

Cite as

Justus Bogner, Adrian Weller, Stefan Wagner, and Alfred Zimmermann. Exploring Maintainability Assurance Research for Service- and Microservice-Based Systems: Directions and Differences. In Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019). Open Access Series in Informatics (OASIcs), Volume 78, pp. 3:1-3:22, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)


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@InProceedings{bogner_et_al:OASIcs.Microservices.2017-2019.3,
  author =	{Bogner, Justus and Weller, Adrian and Wagner, Stefan and Zimmermann, Alfred},
  title =	{{Exploring Maintainability Assurance Research for Service- and Microservice-Based Systems: Directions and Differences}},
  booktitle =	{Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)},
  pages =	{3:1--3:22},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-137-5},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{78},
  editor =	{Cruz-Filipe, Lu{\'\i}s and Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian and Sachweh, Sabine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2017-2019.3},
  URN =		{urn:nbn:de:0030-drops-118255},
  doi =		{10.4230/OASIcs.Microservices.2017-2019.3},
  annote =	{Keywords: Maintainability, Software Evolution, Quality Assurance, Service-Based Systems, SOA, Microservices, Systematic Literature Review}
}
Document
Introduction to Microservice API Patterns (MAP)

Authors: Olaf Zimmermann, Mirko Stocker, Daniel Lübke, Cesare Pautasso, and Uwe Zdun


Abstract
The Microservice API Patterns (MAP) language and supporting website premiered under this name at Microservices 2019. MAP distills proven, platform- and technology-independent solutions to recurring (micro-)service design and interface specification problems such as finding well-fitting service granularities, rightsizing message representations, and managing the evolution of APIs and their implementations. In this paper, we motivate the need for such a pattern language, outline the language organization and present two exemplary patterns describing alternative options for representing nested data. We also identify future research and development directions.

Cite as

Olaf Zimmermann, Mirko Stocker, Daniel Lübke, Cesare Pautasso, and Uwe Zdun. Introduction to Microservice API Patterns (MAP). In Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019). Open Access Series in Informatics (OASIcs), Volume 78, pp. 4:1-4:17, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)


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@InProceedings{zimmermann_et_al:OASIcs.Microservices.2017-2019.4,
  author =	{Zimmermann, Olaf and Stocker, Mirko and L\"{u}bke, Daniel and Pautasso, Cesare and Zdun, Uwe},
  title =	{{Introduction to Microservice API Patterns (MAP)}},
  booktitle =	{Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)},
  pages =	{4:1--4:17},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-137-5},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{78},
  editor =	{Cruz-Filipe, Lu{\'\i}s and Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian and Sachweh, Sabine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2017-2019.4},
  URN =		{urn:nbn:de:0030-drops-118268},
  doi =		{10.4230/OASIcs.Microservices.2017-2019.4},
  annote =	{Keywords: application programming interfaces, distributed systems, enterprise application integration, service-oriented computing, software architecture}
}
Document
PREvant (Preview Servant): Composing Microservices into Reviewable and Testable Applications

Authors: Marc Schreiber


Abstract
This paper introduces PREvant (preview servant), a software tool which provides a simple RESTful API for deploying and composing containerized microservices as reviewable applications. PREvant’s API serves as a connector between continuous delivery pipelines of microservices and the infrastructure that hosts the applications. Based on the REST API and a web interface developers and domain experts at aixigo AG developed quality assurance workflows that help to increase and maintain high microservice quality.

Cite as

Marc Schreiber. PREvant (Preview Servant): Composing Microservices into Reviewable and Testable Applications. In Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019). Open Access Series in Informatics (OASIcs), Volume 78, pp. 5:1-5:16, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)


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@InProceedings{schreiber:OASIcs.Microservices.2017-2019.5,
  author =	{Schreiber, Marc},
  title =	{{PREvant (Preview Servant): Composing Microservices into Reviewable and Testable Applications}},
  booktitle =	{Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)},
  pages =	{5:1--5:16},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-137-5},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{78},
  editor =	{Cruz-Filipe, Lu{\'\i}s and Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian and Sachweh, Sabine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2017-2019.5},
  URN =		{urn:nbn:de:0030-drops-118272},
  doi =		{10.4230/OASIcs.Microservices.2017-2019.5},
  annote =	{Keywords: Microservice development, testing for microservices, exploratory testing, development workflows}
}

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