Program

May 10th (Theme: Autonomic Microservices and SW Engineering Approaches)

8:40 9:10	Registration desk Location: Auditorium
9:10 9:30	Welcome and opening speech Speakers: Fabrizio Montesi Opening speech to welcome all the attendees and introduce the organisation and the environment around the conference. Location: Auditorium
9:30 10:30	Keynote Speaker Technical Debt and Microservices: Valentina Lenarduzzi Slides Abstract of the keynote Location: Auditorium
10:30 11:00	Coffee Break Location: Salle panoramique
11:00 12:30	Autonomic Microservices A MAPE-K Approach to Autonomic Microservices Authors: Claudio Guidi; Antonio Bucchiarone; Ivan Lanese; Nelly Bencomo; Josef Spillner Paper Abstract Microservices are an emerging architectural style advocating for small loosely-coupled services in order to maximize scalability and adaptability. In order to help IT personnel, adaptability can be put (completely or partially) under the responsibility of the system using autonomic techniques, e.g., underpinned by a MAPE-K control loop. This paper discusses possible trade-offs, challenges and support techniques for software architects involved in building autonomic microservice-based systems. Airtight NFR and Cross-Cutting Concerns through a MECE Pipeline Taxonomy for a Highly Reactive Microservice-Based Architecture Authors: Eric Chartré; Mehdi Adda Paper Abstract Non-functional requirements (NFR), protocol fitness, aspects and cross-cutting concerns in a microservice-based architecture are critical issues that cannot be ignored. This paper proposes a MECE pipeline taxonomy that can help to address these issues. The execution pipeline consists of a series of addressable filters within a reusable and configurable framework. This pipeline taxonomy organizes business informational resources and nullipotent filters in a strict predetermined sequential order. This order cannot be changed but filters can be activated or deactivated according to the needed requirements. This taxonomy defines which component can call another component, as a stage director would do in a choreography. Explainable Root Cause Analysis for Failing Microservices Authors: Jacopo Soldani; Stefano Forti; Antonio Brogi Paper Abstract Slides Determining the root causes of observed failures is a main issue in microservice-based applications. Unfortunately, available root cause analysis techniques do not focus on explaining how root failures actually caused the observed failure. On the other hand, the availability of such explanations would greatly help to pick adequate countermeasures, e.g., by introducing circuit breakers or bulkheads. We hence present a declarative root cause analysis technique, which can determine the cascading failures that possibly caused an observed failure, identifying also (or starting from) a root cause. We also introduce a prototype implementation of our technique, and briefly comment on how we used it to assess our technique by means of controlled experiments. Chair: Fabrizio Montesi Location: Auditorium
12:30 14:00	Lunch Location: Salle panoramique
14:00 15:00	Automonic Microservices From Reactive to Proactive Global Scaling Authors: Lorenzo Bacchiani; Mario Bravetti; Maurizio Gabbrielli; Saverio Giallorenzo; Gianluigi Zavattaro; Stefano Pio Zingaro Paper Abstract Modern Cloud autoscaling techniques scale microservice replicas to adapt to their in-bound traffic. We recently theorised and evaluated a scaling technique called architecture-level, global scaling, able to scale the whole architecture w.r.t. an expected amount of traffic. Among its benefits, global scaling helps to prevent “domino” effects (cascading slowdowns) due to the unstructured scaling actions of microservice-level scaling. The current notion of global scaling assumes a reactive behaviour w.r.t. traffic fluctuations, where the latter trigger the application of the related scaling plans. Here, we challenge this reactive interpretation, and we propose a proactive extension of global scaling able to increase the efficiency of global scaling, by further lowering latency and message loss due to the runtime overhead of allocating virtual machines and replicas. Our contributions include the proposal of a platform for proactive global autoscaling and a preliminary benchmarking of the efficiency gain of proactive vs reactive global scaling. Automated microservices deployment and dynamic traffic forwarding through 5G networks Authors: Daniele Rossi; Giacomo Tontini; Mauro Sgarzi; Claudio Guidi; Antonella Bellettini; Franco Callegati Paper Abstract To approach the complexity of microservices collaboration and composition, a microservice oriented language like Jolie can be used. Jung is platform written in Jolie that allows to deploy distributed microservice applications in an integrated way. In this manuscript we further integrate the capability to deploy with different network connectivity alternatives, in particular 5G. On top of the network, few digital entities will be used to abstract network capabilities and offer to third-party users a standardized and uniform way to talk with the 5G-core network system. Chair: Jaime Arias Location: Auditorium
15:00 15:30	Coffee Break Location: Salle panoramique
15:30 16:30	SW Engineering Approaches Applying QoS in FaaS applications: a Software Product Line approach Authors: Pablo Serrano; Inmaculada Ayala; Lidia Fuentes Paper Abstract A FaaS system offers numerous advantages for the developer of microservices-based systems since they do not have to worry about the infrastructure that supports them or scaling and maintenance tasks. However, it is not easy to apply quality of service (QoS)policies in these kind of applications. The high number of functions that an application can have and its various implementations introduce a high variability that requires a mechanism to decide which functions are more appropriate to achieve specific goals. We propose a Software Product Line based approach that uses feature models that model the appli-cation’s tasks and operations, considering the family of services derived from the multiple functions that can perform a specific procedure. Through an optimization process, the system obtains an optimal configuration that it will use to direct service requests to the most appropriate functions to meet certain QoS requirements. Microservice Smells and Automated Detection Tools: A Systematic Literature Review (online) Authors: Denis Pinheiro; Johnatan Oliveira; Eduardo Figueiredo Paper Abstract Slides Several microservice smells and automated detection tools has been proposed and studied in the literature, but they still lack a cohesive and organized documentation and consistent terminology. To fill this gap, this work presents a systematic literature review of 15 papers that investigated the most recent microservice smells and related detection tools. As a result, we present the landscape (where, when and how they occur) and document of 77 microservice smells (what), 2 detection tools and other 19 related tools commonly used to automate detection of architecture smells and support adoption of microservices. Chair: Cesare Pautasso Location: Auditorium

May 11th (Theme: Architectures and Tools)

9:30 10:30	Keynote Speaker Crossing the Chasm Between AI Services and AI-powered Workflows: Fabio Casati Slides Abstract of the keynote Location: Auditorium
10:30 11:00	Coffee Break Location: Auditorium
11:00 12:30	Architectures ZVAX - A Microservice Reference Architecture for Nation-Scale Pandemic Management Authors: Oliver Cvetkovski; Carlo Field; Davide Trinchi; Christof Marti; Josef Spillner Paper Abstract Domain-specific Microservice Reference Architectures (MSRA) have become relevant study objects in software technology. They facilitate the technical evaluation of service designs, compositions patterns and deployment configurations in realistic operational practice. Knowledge about MSRA is predominantly confined to business domains with usually not more than few thousands of users per application. Due to the ongoing digital transformation of society, people-related online services in e-government, e-health and similar domains must be designed to be highly scalable at entire nation level at affordable infrastructure cost. With ZVAX, we present work in progress in the e-health domain. Specifically, ZVAX is an MSRA for pandemic-related processes such as vaccination registration and passenger locator form submission, with emphasis on selectable levels of privacy. We argue that ZVAX is valuable as study object for the training of software engineers and for the debate on government-to-citizen services. Towards Viewpoint-Based Microservice Architecture Reconstruction Authors: Philip Wizenty; Florian Rademacher Paper Abstract Microservice Architecture (MSA) is a comparatively novel approach to realizing service-based software architectures. Microservices and their service-specific independence can make software systems more scalable and reliable. In addition, MSA is expected to greatly benefit maintainability by facilitating the replacement of services with improved versions. However, this flexibility may also lead to a proliferation of microservices and a subsequent erosion of the anticipated architecture design. Consequently, the investigation of Software Architecture Reconstruction (SAR) of existing systems is important in MSA research. Our paper presents an MDE-enabled SAR approach to reconstruct MSA. Grey Areas of Digital Forensic Tools and a Framework to Solve the IoT Data Forensic Analysis Problems (online) Authors: Benjamin Benson; Gokila Dorai Paper Abstract The constant and rapid evolution of technology has led to some amazing achievements. Normal people can communicate with others across the globe, relatively cheap Internet of Things (IoT) devices can be used to secure homes, track fitness and health, control appliances, etc., many people have access to a seemingly endless wealth of information in small devices in their pockets, organizations can provide high availability for important services by spinning up/down servers in minutes to scale with demand through cloud services, etc. However, not everyone who uses these technologies does so with a pure heart and good intentions, many people use them to commit or help commit crimes. A nefarious individual may use cloud services to host a highly available Command and Control (C2) server, a messaging app to form and communicate with a gang or hacking group, or IoT devices as part of a botnet designed to perform Distributed Denial of Service (DDoS) attacks. When these technologies are used in the commission of a crime, they hold valuable information that needs to be recovered forensically to use as evidence to convict the perpetrators. Unfortunately, that ever-evolving technology poses many challenges for digital forensics. This paper identifies and presents many of the challenges faced in digital forensics involving mobile devices, IoT devices, and cloud services in addition to proposing a framework for solving the IoT Forensic Data Analysis problem. Chair: Dimka Karastoyanova Location: Auditorium
12:30 14:00	Lunch Location: Salle panoramique
14:00 15:30	Tools Synthesising Java Implementations of Choreographic Protocols Authors: Anne Møller Madsen; Fabrizio Montesi Paper Abstract We present Modular Choreographies, a new programming language and toolchain for writing choreographies of distributed systems in a simple language and then obtain compliant implementations in terms of Java libraries. Static analysis tools in the era of cloud-native systems Authors: Tomas Cerny; Davide Taibi Paper Abstract Microservices-based architectures are based on a set of small services, developed and deployed independently. The independent nature of this modular architecture also creates gaps. The initial system design plan might be far from what is eventually developed and the architecture may degrade over time. This work challenges the audience on how static analysis could contribute to microservice system development and management, and in particular managing architectural degradation. We elaborate on challenges and needed changes in the traditional code analysis to better fit these systems and we discuss implications on practitioners when robust static analysis tools will become available. Asgardeo is the last solution as a service from WSO2 (online) Author: Gabriele Gianoglio Paper Abstract An overview of Asgardeo and how its use can simplify the CIAM processes of companies. Chair: Christian Walther Bruun Location: Auditorium
15:30 16:00	Coffee Break Location: Salle panoramique
16:00 17:00	Business Meeting Location: Salle panoramique
19:30 22:00	Social Dinner Location: Bouillon Racine

May 12th (Theme: Migration to Microservices)

9:30 10:30	Keynote Speaker The Microservice Hypothesis: Cesare Pautasso Slides Abstract of the keynote Location: Auditorium
10:30 11:00	Coffee Break Location: Auditorium
11:00 12:00	Migration to Microservices LEMMA2Jolie: Model-Driven Generation of Microservice Interfaces (online) Authors: Saverio Giallorenzo; Fabrizio Montesi; Marco Peressotti; Florian Rademacher Paper Abstract We present our first step towards the integration of two language-based approaches to Microservice Architecture(MSA) engineering, namely the MSA-focused modelling ecosystem LEMMA and the microservice programming language Jolie. We formally define and implement a translation from domain models in the LEMMA modelling framework to microservice APIs in the Jolie programming language. Our tool, called LEMMA2Jolie, enables a software development process whereby microservice architectures can first be designed with the leading method of Domain-Driven Design, and then corresponding data types and service interfaces (APIs) in Jolie are automatically generated. Developers can extend and use these APIs as guides in order to produce compliant implementations. Our tool thus contributes to enhancing productivity and improving the design adherence of microservices. Microservice Migration: Face-Off Decomposition and Integration Challenges (online) Author: Riccardo Boggetti Paper Abstract In a world that is demanding microservices but ruled by legacy and monolith applications yet, it could be tough arrange a successfully migration due to a lot of challenges and both operative and organisational issues. Thanks to modern technologies, such as low code and machine learning, and specific purpose solutions you can ease your journey. Chair: Davide Taibi Location: Auditorium
12:00 13:30	Lunch Location: Salle panoramique
13:30 15:00	Funding and Consortium Building Workshop Christian Walther Bruun Abstract Slides Topic: Participants will get insights into the opportunities of obtaining EU funding via the European framework programme Horizon Europe and Eurostars. These support research and innovation activities for companies, universities and organisations interested in developing joint European projects. The workshop will have two main parts: Overview of funding opportunities relevant for microservices (MSCA, research and innovation project and Eurostars projects) Project idea pitches and networking amongst participants About me: Christian is a Board Member of Microservices Community and the Director of Grøn/Bruun a pre-award and grant writing consultancy based in Copenhagen Denmark, with clients all over Europe. Grøn/Bruun assists in developing international proposals for industry and academia with a focus on Horizon Europe and the Eurostars funding programmes. Christian has worked in the Danish Agency for Science and Higher Education, European Commission and South Denmark European Office. At these jobs he was lead or directly involved in the Horizon 2020 Interim Evaluation, FP7 Ex-Post Evaluation, Big Science Business Forum 2018, Horizon 2020 proposals, public affairs, organisational analysis of R&I as well as extensive work with communication and dissemination of research and innovation. LinkedIn What is Horizon Europe? Horizon Europe is the EU's research and innovation programme, that will run from 2021–2027 with a total budget of around 85 billion EUR, with many types of instruments and grants promoting European research and innovation. What is Eurostars? Eurostars is a member state-supported EU programme aimed at promoting innovation in SME’s in Europe by funding collaboration projects for these also including university and large industry partners. Who should participate? Industry, organisation and university staff interested in obtaining funding for research or innovation project using microservices or adjacent approaches. Why should you participate? Participants will gain insight into the in and outs of Horizon Europe, learning about how to find and read a call, how to build a consortium and meet like-minded people from around Europe. Location: Salle panoramique
15:00 15:30	Coffee Break Location: Salle panoramique
16:00 16:30	Awards Ceremony Location: Auditorium