20 Search Results for "Peressotti, Marco"

Volume

OASIcs, Volume 78

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

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

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

Document
DOI: 10.4230/LIPIcs.CSL.2026.18
A Modular Framework for Proof-Search via Formalised Modal Completeness in HOL Light

Authors: Antonella Bilotta, Marco Maggesi, and Cosimo Perini Brogi

Published in: LIPIcs, Volume 363, 34th EACSL Annual Conference on Computer Science Logic (CSL 2026)

Abstract
We extend the existing HOL Light Library for Modal Systems (HOLMS) to support a modular implementation of modal reasoning within the HOL Light proof assistant. We deeply embed axiomatic calculi and relational semantics for seven normal modal logics (K, T, B, K4, S4, S5, GL) and formalise modal adequacy theorems for these systems. We then leverage those formalisations to implement a mechanism for automated reasoning via proof-search in the associated labelled sequent calculi, which we shallowly embed in HOL Light’s goal-stack mechanism. This way, we equip the general-purpose proof assistant with (semi)decision procedures for these logics that, in case of failure to construct a proof for the input formula, return a certified countermodel within the appropriate class for the logic under consideration. On the methodological side, we propose a precise measure of the modularity of our approach by systematically adopting Christopher Strachey’s distinction between ad hoc and parametric polymorphism throughout the library.
Cite as

Antonella Bilotta, Marco Maggesi, and Cosimo Perini Brogi. A Modular Framework for Proof-Search via Formalised Modal Completeness in HOL Light. In 34th EACSL Annual Conference on Computer Science Logic (CSL 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 363, pp. 18:1-18:29, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

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@InProceedings{bilotta_et_al:LIPIcs.CSL.2026.18,
  author =	{Bilotta, Antonella and Maggesi, Marco and Perini Brogi, Cosimo},
  title =	{{A Modular Framework for Proof-Search via Formalised Modal Completeness in HOL Light}},
  booktitle =	{34th EACSL Annual Conference on Computer Science Logic (CSL 2026)},
  pages =	{18:1--18:29},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-411-6},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{363},
  editor =	{Guerrini, Stefano and K\"{o}nig, Barbara},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2026.18},
  URN =		{urn:nbn:de:0030-drops-254427},
  doi =		{10.4230/LIPIcs.CSL.2026.18},
  annote =	{Keywords: Modal logic, HOL Light, Labelled sequent calculi, Logical verification, Interactive theorem proving, Automated proof-search}
}
Document
DOI: 10.4230/LIPIcs.ITP.2025.15
Certified Implementability of Global Multiparty Protocols

Authors: Elaine Li and Thomas Wies

Published in: LIPIcs, Volume 352, 16th International Conference on Interactive Theorem Proving (ITP 2025)

Abstract
Implementability is the decision problem at the heart of top-down approaches to protocol verification. In this paper, we present a mechanization of a recently proposed precise implementability characterization by Li et al. for a large class of protocols that subsumes many existing formalisms in the literature. Our protocols and implementations model asynchronous commmunication, and can exhibit infinite behavior. We improve upon their pen-and-paper results by unifying distinct formalisms, simplifying existing proof arguments, elaborating on the construction of canonical implementations, and even uncovering a subtle bug in the semantics for infinite words. As a corollary of our mechanization, we show that the original characterization of implementability applies even to protocols with infinitely many participants. We also contribute a reusable library for reasoning about generic communicating state machines. Our mechanization consists of about 15k lines of Rocq code. We believe that our mechanization can provide the foundation for deductively proving the implementability of protocols beyond the reach of prior work, extracting certified implementations for finite protocols, and investigating implementability under alternative asynchronous communication models.
Cite as

Elaine Li and Thomas Wies. Certified Implementability of Global Multiparty Protocols. In 16th International Conference on Interactive Theorem Proving (ITP 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 352, pp. 15:1-15:20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{li_et_al:LIPIcs.ITP.2025.15,
  author =	{Li, Elaine and Wies, Thomas},
  title =	{{Certified Implementability of Global Multiparty Protocols}},
  booktitle =	{16th International Conference on Interactive Theorem Proving (ITP 2025)},
  pages =	{15:1--15:20},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-396-6},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{352},
  editor =	{Forster, Yannick and Keller, Chantal},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ITP.2025.15},
  URN =		{urn:nbn:de:0030-drops-246139},
  doi =		{10.4230/LIPIcs.ITP.2025.15},
  annote =	{Keywords: Asynchronous protocols, communicating state machines, labeled transition systems, infinite semantics, realizability, multiparty session types, choreographies, deadlock freedom}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2025.17
Contrasting Deadlock-Free Session Processes

Authors: Juan C. Jaramillo and Jorge A. Pérez

Published in: LIPIcs, Volume 333, 39th European Conference on Object-Oriented Programming (ECOOP 2025)

Abstract
Deadlock freedom is a crucial property for message-passing programs. Over the years, several different type systems for concurrent processes that ensure deadlock freedom have been proposed; this diversity raises the question of how they compare. We address this question, considering two type systems not covered in prior work: Kokke et al.’s HCP, a type system based on a linear logic with hypersequents, and Padovani’s priority-based type system for asynchronous processes, dubbed 𝖯. Their distinctive features make formal comparisons relevant and challenging. Our findings are two-fold: (1) the hypersequent setting does not drastically change the class of deadlock-free processes induced by linear logic, and (2) we relate the classes of deadlock-free processes induced by HCP and 𝖯. We prove that our results hold under both synchronous and asynchronous communication. Our results provide new insights into the essential mechanisms involved in statically avoiding deadlocks in concurrency.
Cite as

Juan C. Jaramillo and Jorge A. Pérez. Contrasting Deadlock-Free Session Processes. In 39th European Conference on Object-Oriented Programming (ECOOP 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 333, pp. 17:1-17:29, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{jaramillo_et_al:LIPIcs.ECOOP.2025.17,
  author =	{Jaramillo, Juan C. and P\'{e}rez, Jorge A.},
  title =	{{Contrasting Deadlock-Free Session Processes}},
  booktitle =	{39th European Conference on Object-Oriented Programming (ECOOP 2025)},
  pages =	{17:1--17:29},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-373-7},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{333},
  editor =	{Aldrich, Jonathan and Silva, Alexandra},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2025.17},
  URN =		{urn:nbn:de:0030-drops-233103},
  doi =		{10.4230/LIPIcs.ECOOP.2025.17},
  annote =	{Keywords: session types, process calculi, deadlock freedom}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2024.31
Ozone: Fully Out-of-Order Choreographies

Authors: Dan Plyukhin, Marco Peressotti, and Fabrizio Montesi

Published in: LIPIcs, Volume 313, 38th European Conference on Object-Oriented Programming (ECOOP 2024)

Abstract
Choreographic programming is a paradigm for writing distributed applications. It allows programmers to write a single program, called a choreography, that can be compiled to generate correct implementations of each process in the application. Although choreographies provide good static guarantees, they can exhibit high latency when messages or processes are delayed. This is because processes in a choreography typically execute in a fixed, deterministic order, and cannot adapt to the order that messages arrive at runtime. In non-choreographic code, programmers can address this problem by allowing processes to execute out of order - for instance by using futures or reactive programming. However, in choreographic code, out-of-order process execution can lead to serious and subtle bugs, called communication integrity violations (CIVs). In this paper, we develop a model of choreographic programming for out-of-order processes that guarantees absence of CIVs and deadlocks. As an application of our approach, we also introduce an API for safe non-blocking communication via futures in the choreographic programming language Choral. The API allows processes to execute out of order, participate in multiple choreographies concurrently, and to handle unordered data messages. We provide an illustrative evaluation of our API, showing that out-of-order execution can reduce latency and increase throughput by overlapping communication with computation.
Cite as

Dan Plyukhin, Marco Peressotti, and Fabrizio Montesi. Ozone: Fully Out-of-Order Choreographies. In 38th European Conference on Object-Oriented Programming (ECOOP 2024). Leibniz International Proceedings in Informatics (LIPIcs), Volume 313, pp. 31:1-31:28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)

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@InProceedings{plyukhin_et_al:LIPIcs.ECOOP.2024.31,
  author =	{Plyukhin, Dan and Peressotti, Marco and Montesi, Fabrizio},
  title =	{{Ozone: Fully Out-of-Order Choreographies}},
  booktitle =	{38th European Conference on Object-Oriented Programming (ECOOP 2024)},
  pages =	{31:1--31:28},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-341-6},
  ISSN =	{1868-8969},
  year =	{2024},
  volume =	{313},
  editor =	{Aldrich, Jonathan and Salvaneschi, Guido},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2024.31},
  URN =		{urn:nbn:de:0030-drops-208800},
  doi =		{10.4230/LIPIcs.ECOOP.2024.31},
  annote =	{Keywords: Choreographic programming, Asynchrony, Concurrency}
}
Document
Artifact
DOI: 10.4230/DARTS.10.2.16
Ozone: Fully Out-of-Order Choreographies (Artifact)

Authors: Dan Plyukhin, Marco Peressotti, and Fabrizio Montesi

Published in: DARTS, Volume 10, Issue 2, Special Issue of the 38th European Conference on Object-Oriented Programming (ECOOP 2024)

Abstract
Choreographic programming is a paradigm for writing distributed applications. It allows programmers to write a single program, called a choreography, that can be compiled to generate correct implementations of each process in the application. Although choreographies provide good static guarantees, they can exhibit high latency when messages or processes are delayed. This is because processes in a choreography typically execute in a fixed, deterministic order, and cannot adapt to the order that messages arrive at runtime. In non-choreographic code, programmers can address this problem by allowing processes to execute out of order - for instance by using futures or reactive programming. However, in choreographic code, out-of-order process execution can lead to serious and subtle bugs, called communication integrity violations (CIVs). In this paper, we develop a model of choreographic programming for out-of-order processes that guarantees absence of CIVs and deadlocks. As an application of our approach, we also introduce an API for safe non-blocking communication via futures in the choreographic programming language Choral. The API allows processes to execute out of order, participate in multiple choreographies concurrently, and to handle unordered data messages. We provide an illustrative evaluation of our API, showing that out-of-order execution can reduce latency and increase throughput by overlapping communication with computation.
Cite as

Dan Plyukhin, Marco Peressotti, and Fabrizio Montesi. Ozone: Fully Out-of-Order Choreographies (Artifact). In Special Issue of the 38th European Conference on Object-Oriented Programming (ECOOP 2024). Dagstuhl Artifacts Series (DARTS), Volume 10, Issue 2, pp. 16:1-16:2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)

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@Article{plyukhin_et_al:DARTS.10.2.16,
  author =	{Plyukhin, Dan and Peressotti, Marco and Montesi, Fabrizio},
  title =	{{Ozone: Fully Out-of-Order Choreographies (Artifact)}},
  pages =	{16:1--16:2},
  journal =	{Dagstuhl Artifacts Series},
  ISBN =	{978-3-95977-342-3},
  ISSN =	{2509-8195},
  year =	{2024},
  volume =	{10},
  number =	{2},
  editor =	{Plyukhin, Dan and Peressotti, Marco and Montesi, Fabrizio},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.10.2.16},
  URN =		{urn:nbn:de:0030-drops-209145},
  doi =		{10.4230/DARTS.10.2.16},
  annote =	{Keywords: Choreographic programming, Asynchrony, Concurrency.}
}
Document
DOI: 10.4230/OASIcs.Microservices.2020-2022.3
Modular Choreographies: Bridging Alice and Bob Notation to Java

Authors: Luís Cruz-Filipe, Anne Madsen, Fabrizio Montesi, and Marco Peressotti

Published in: OASIcs, Volume 111, Joint Post-proceedings of the Third and Fourth International Conference on Microservices (Microservices 2020/2022)

Abstract
We present Modular Choreographies, a new choreographic programming language that features modular functions. Modular Choreographies is aimed at simplicity: its communication abstraction follows the simple tradition from the "Alice and Bob" notation. We develop a compiler toolchain that translates choreographies into modular Java libraries, which developers can use to participate correctly in choreographies. The key novelty is to compile through the Choral language, which was previously proposed to define object-oriented choreographies: our toolchain compiles Modular Choreographies to Choral, and then leverages the existing Choral compiler to generate Java code. Our work is the first to bridge the simplicity of traditional choreographic programming languages with the requirement of generating modular libraries in a mainstream language (Java).
Cite as

Luís Cruz-Filipe, Anne Madsen, Fabrizio Montesi, and Marco Peressotti. Modular Choreographies: Bridging Alice and Bob Notation to Java. In Joint Post-proceedings of the Third and Fourth International Conference on Microservices (Microservices 2020/2022). Open Access Series in Informatics (OASIcs), Volume 111, pp. 3:1-3:18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{cruzfilipe_et_al:OASIcs.Microservices.2020-2022.3,
  author =	{Cruz-Filipe, Lu{\'\i}s and Madsen, Anne and Montesi, Fabrizio and Peressotti, Marco},
  title =	{{Modular Choreographies: Bridging Alice and Bob Notation to Java}},
  booktitle =	{Joint Post-proceedings of the Third and Fourth International Conference on Microservices (Microservices 2020/2022)},
  pages =	{3:1--3:18},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-306-5},
  ISSN =	{2190-6807},
  year =	{2023},
  volume =	{111},
  editor =	{Dorai, Gokila and Gabbrielli, Maurizio and Manzonetto, Giulio and Osmani, Aomar and Prandini, Marco and Zavattaro, Gianluigi and Zimmermann, Olaf},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2020-2022.3},
  URN =		{urn:nbn:de:0030-drops-194650},
  doi =		{10.4230/OASIcs.Microservices.2020-2022.3},
  annote =	{Keywords: Choreographic Programming, Choreographies, Modularity}
}
Document
DOI: 10.4230/OASIcs.Microservices.2020-2022.6
Model-Driven Code Generation for Microservices: Service Models

Authors: Saverio Giallorenzo, Fabrizio Montesi, Marco Peressotti, and Florian Rademacher

Published in: OASIcs, Volume 111, Joint Post-proceedings of the Third and Fourth International Conference on Microservices (Microservices 2020/2022)

Abstract
We formally define and implement a translation of domain and service models expressed in the LEMMA modelling ecosystem for microservice architectures to source code in the Jolie microservice programming language. Specifically, our work extends previous efforts on the generation of Jolie code to the inclusion of the LEMMA service modelling layer. We also contribute an implementation of our translation, given as an extension of the LEMMA2Jolie tool, which enables the practical application of our encoding. As a result, LEMMA2Jolie now supports a software development process whereby microservice architectures can first be designed by microservice developers in collaboration with domain experts in LEMMA, and then be automatically translated into Jolie APIs. Our tool can thus be used to enhance productivity and improve design adherence.
Cite as

Saverio Giallorenzo, Fabrizio Montesi, Marco Peressotti, and Florian Rademacher. Model-Driven Code Generation for Microservices: Service Models. In Joint Post-proceedings of the Third and Fourth International Conference on Microservices (Microservices 2020/2022). Open Access Series in Informatics (OASIcs), Volume 111, pp. 6:1-6:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{giallorenzo_et_al:OASIcs.Microservices.2020-2022.6,
  author =	{Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Rademacher, Florian},
  title =	{{Model-Driven Code Generation for Microservices: Service Models}},
  booktitle =	{Joint Post-proceedings of the Third and Fourth International Conference on Microservices (Microservices 2020/2022)},
  pages =	{6:1--6:17},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-306-5},
  ISSN =	{2190-6807},
  year =	{2023},
  volume =	{111},
  editor =	{Dorai, Gokila and Gabbrielli, Maurizio and Manzonetto, Giulio and Osmani, Aomar and Prandini, Marco and Zavattaro, Gianluigi and Zimmermann, Olaf},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Microservices.2020-2022.6},
  URN =		{urn:nbn:de:0030-drops-194688},
  doi =		{10.4230/OASIcs.Microservices.2020-2022.6},
  annote =	{Keywords: Microservices, Model-driven Engineering, Code Generation, Jolie APIs}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2023.7
Modular Compilation for Higher-Order Functional Choreographies

Authors: Luís Cruz-Filipe, Eva Graversen, Lovro Lugović, Fabrizio Montesi, and Marco Peressotti

Published in: LIPIcs, Volume 263, 37th European Conference on Object-Oriented Programming (ECOOP 2023)

Abstract
Choreographic programming is a paradigm for concurrent and distributed software, whereby descriptions of the intended communications (choreographies) are automatically compiled into distributed code with strong safety and liveness properties (e.g., deadlock-freedom). Recent efforts tried to combine the theories of choreographic programming and higher-order functional programming, in order to integrate the benefits of the former with the modularity of the latter. However, they do not offer a satisfactory theory of compilation compared to the literature, because of important syntactic and semantic shortcomings: compilation is not modular (editing a part might require recompiling everything) and the generated code can perform unexpected global synchronisations. In this paper, we find that these shortcomings are not mere coincidences. Rather, they stem from genuine new challenges posed by the integration of choreographies and functions: knowing which participants are involved in a choreography becomes nontrivial, and divergence in applications requires rethinking how to prove the semantic correctness of compilation. We present a novel theory of compilation for functional choreographies that overcomes these challenges, based on types and a careful design of the semantics of choreographies and distributed code. The result: a modular notion of compilation, which produces code that is deadlock-free and correct (it operationally corresponds to its source choreography).
Cite as

Luís Cruz-Filipe, Eva Graversen, Lovro Lugović, Fabrizio Montesi, and Marco Peressotti. Modular Compilation for Higher-Order Functional Choreographies. In 37th European Conference on Object-Oriented Programming (ECOOP 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 263, pp. 7:1-7:37, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{cruzfilipe_et_al:LIPIcs.ECOOP.2023.7,
  author =	{Cruz-Filipe, Lu{\'\i}s and Graversen, Eva and Lugovi\'{c}, Lovro and Montesi, Fabrizio and Peressotti, Marco},
  title =	{{Modular Compilation for Higher-Order Functional Choreographies}},
  booktitle =	{37th European Conference on Object-Oriented Programming (ECOOP 2023)},
  pages =	{7:1--7:37},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-281-5},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{263},
  editor =	{Ali, Karim and Salvaneschi, Guido},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2023.7},
  URN =		{urn:nbn:de:0030-drops-182005},
  doi =		{10.4230/LIPIcs.ECOOP.2023.7},
  annote =	{Keywords: Choreographies, Concurrency, \lambda-calculus, Type Systems}
}
Document
Pearl
DOI: 10.4230/LIPIcs.ECOOP.2021.22
Multiparty Languages: The Choreographic and Multitier Cases (Pearl)

Authors: Saverio Giallorenzo, Fabrizio Montesi, Marco Peressotti, David Richter, Guido Salvaneschi, and Pascal Weisenburger

Published in: LIPIcs, Volume 194, 35th European Conference on Object-Oriented Programming (ECOOP 2021)

Abstract
Choreographic languages aim to express multiparty communication protocols, by providing primitives that make interaction manifest. Multitier languages enable programming computation that spans across several tiers of a distributed system, by supporting primitives that allow computation to change the location of execution. Rooted into different theoretical underpinnings - respectively process calculi and lambda calculus - the two paradigms have been investigated independently by different research communities with little or no contact. As a result, the link between the two paradigms has remained hidden for long. In this paper, we show that choreographic languages and multitier languages are surprisingly similar. We substantiate our claim by isolating the core abstractions that differentiate the two approaches and by providing algorithms that translate one into the other in a straightforward way. We believe that this work paves the way for joint research and cross-fertilisation among the two communities.
Cite as

Saverio Giallorenzo, Fabrizio Montesi, Marco Peressotti, David Richter, Guido Salvaneschi, and Pascal Weisenburger. Multiparty Languages: The Choreographic and Multitier Cases (Pearl). In 35th European Conference on Object-Oriented Programming (ECOOP 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 194, pp. 22:1-22:27, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{giallorenzo_et_al:LIPIcs.ECOOP.2021.22,
  author =	{Giallorenzo, Saverio and Montesi, Fabrizio and Peressotti, Marco and Richter, David and Salvaneschi, Guido and Weisenburger, Pascal},
  title =	{{Multiparty Languages: The Choreographic and Multitier Cases}},
  booktitle =	{35th European Conference on Object-Oriented Programming (ECOOP 2021)},
  pages =	{22:1--22:27},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-190-0},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{194},
  editor =	{M{\o}ller, Anders and Sridharan, Manu},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2021.22},
  URN =		{urn:nbn:de:0030-drops-140658},
  doi =		{10.4230/LIPIcs.ECOOP.2021.22},
  annote =	{Keywords: Distributed Programming, Choreographies, Multitier Languages}
}
Document
DOI: 10.4230/LIPIcs.ITP.2021.15
Formalising a Turing-Complete Choreographic Language in Coq

Authors: Luís Cruz-Filipe, Fabrizio Montesi, and Marco Peressotti

Published in: LIPIcs, Volume 193, 12th International Conference on Interactive Theorem Proving (ITP 2021)

Abstract
The theory of choreographic languages typically includes a number of complex results that are proved by structural induction. The high number of cases and the subtle details in some of them lead to long reviewing processes, and occasionally to errors being found in published proofs. In this work, we take a published proof of Turing completeness of a choreographic language and formalise it in Coq. Our development includes formalising the choreographic language, its basic properties, Kleene’s theory of partial recursive functions, the encoding of these functions as choreographies, and a proof that this encoding is correct. With this effort, we show that theorem proving can be a very useful tool in the field of choreographic languages: besides the added degree of confidence that we get from a mechanised proof, the formalisation process led us to a significant simplification of the underlying theory. Our results offer a foundation for the future formal development of choreographic languages.
Cite as

Luís Cruz-Filipe, Fabrizio Montesi, and Marco Peressotti. Formalising a Turing-Complete Choreographic Language in Coq. In 12th International Conference on Interactive Theorem Proving (ITP 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 193, pp. 15:1-15:18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{cruzfilipe_et_al:LIPIcs.ITP.2021.15,
  author =	{Cruz-Filipe, Lu{\'\i}s and Montesi, Fabrizio and Peressotti, Marco},
  title =	{{Formalising a Turing-Complete Choreographic Language in Coq}},
  booktitle =	{12th International Conference on Interactive Theorem Proving (ITP 2021)},
  pages =	{15:1--15:18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-188-7},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{193},
  editor =	{Cohen, Liron and Kaliszyk, Cezary},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ITP.2021.15},
  URN =		{urn:nbn:de:0030-drops-139109},
  doi =		{10.4230/LIPIcs.ITP.2021.15},
  annote =	{Keywords: Choreographic Programming, Formalisation, Turing Completeness}
}
Document
DOI: 10.4230/OASIcs.Gabbrielli.5
The Servers of Serverless Computing: A Formal Revisitation of Functions as a Service

Authors: Saverio Giallorenzo, Ivan Lanese, Fabrizio Montesi, Davide Sangiorgi, and Stefano Pio Zingaro

Published in: OASIcs, Volume 86, Recent Developments in the Design and Implementation of Programming Languages (2020)

Abstract
Serverless computing is a paradigm for programming cloud applications in terms of stateless functions, executed and scaled in proportion to inbound requests. Here, we revisit SKC, a calculus capturing the essential features of serverless programming. By exploring the design space of the language, we refined the integration between the fundamental features of the two calculi that inspire SKC: the λ- and the π-calculus. That investigation led us to a revised syntax and semantics, which support an increase in the expressiveness of the language. In particular, now function names are first-class citizens and can be passed around. To illustrate the new features, we present step-by-step examples and two non-trivial use cases from artificial intelligence, which model, respectively, a perceptron and an image tagging system into compositions of serverless functions. We also illustrate how SKC supports reasoning on serverless implementations, i.e., the underlying network of communicating, concurrent, and mobile processes which execute serverless functions in the cloud. To that aim, we show an encoding from SKC to the asynchronous π-calculus and prove it correct in terms of an operational correspondence. Dedicated to Maurizio Gabbrielli, on his 60th birthday (... rob da mët ! )
Cite as

Saverio Giallorenzo, Ivan Lanese, Fabrizio Montesi, Davide Sangiorgi, and Stefano Pio Zingaro. The Servers of Serverless Computing: A Formal Revisitation of Functions as a Service. In Recent Developments in the Design and Implementation of Programming Languages. Open Access Series in Informatics (OASIcs), Volume 86, pp. 5:1-5:21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{giallorenzo_et_al:OASIcs.Gabbrielli.5,
  author =	{Giallorenzo, Saverio and Lanese, Ivan and Montesi, Fabrizio and Sangiorgi, Davide and Zingaro, Stefano Pio},
  title =	{{The Servers of Serverless Computing: A Formal Revisitation of Functions as a Service}},
  booktitle =	{Recent Developments in the Design and Implementation of Programming Languages},
  pages =	{5:1--5:21},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-171-9},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{86},
  editor =	{de Boer, Frank S. and Mauro, Jacopo},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Gabbrielli.5},
  URN =		{urn:nbn:de:0030-drops-132271},
  doi =		{10.4230/OASIcs.Gabbrielli.5},
  annote =	{Keywords: Serverless computing, Process calculi, Pi-calculus}
}
Document
Complete Volume
DOI: 10.4230/OASIcs.Microservices.2017-2019
OASIcs, Volume 78, Microservices 2017/2019, Complete Volume

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

Published in: OASIcs, Volume 78, Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)

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

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
DOI: 10.4230/OASIcs.Microservices.2017-2019.0
Front Matter, Table of Contents, Preface, Conference Organization

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

Published in: OASIcs, Volume 78, Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)

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

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
DOI: 10.4230/OASIcs.Microservices.2017-2019.1
Using Microservices to Customize Multi-Tenant SaaS: From Intrusive to Non-Intrusive

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

Published in: OASIcs, Volume 78, Joint Post-proceedings of the First and Second International Conference on Microservices (Microservices 2017/2019)

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}
}
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