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Tópicos
de interesse
Detalhes

Detalhes

  • Nome

    Jácome Costa Cunha
  • Cargo

    Investigador
  • Desde

    01 novembro 2011
Publicações

2024

Chronicles of CI/CD: A Deep Dive into its Usage Over Time

Autores
Gião, HD; Flores, A; Pereira, R; Cunha, J;

Publicação
CoRR

Abstract

2023

A methodology for refactoring ORM-based monolithic web applications into microservices

Autores
Freitas, F; Ferreira, A; Cunha, J;

Publicação
JOURNAL OF COMPUTER LANGUAGES

Abstract
In the last few years we have been seeing a drastic change in the way software is developed. Large-scale software projects are being assembled by a flexible composition of many (small) components possibly written in different programming languages and deployed anywhere in the cloud - the so-called microservices-based applications. The dramatic growth in popularity of microservices-based applications has pushed several companies to apply major refactorings to their software systems. However, this is a challenging task that may take several months or even years. We propose a methodology to automatically evolve monolithic web applications that use object-relational mapping into microservices-based ones. Our methodology receives the source code and a microservices proposal and refactors the original code to create each microservice. Our methodology creates an API for each method call to classes that are in other services. The database entities are also refactored to be included in the corresponding service. The evaluation performed in 120 applications shows that our tool can successfully refactor about 72% of them. The execution of the unit tests in both versions of the applications yield exactly the same results.

2023

Impact of remote work on Portuguese software professionals during the COVID-19 pandemic

Autores
Almeida, AJ; Cunha, J; Fernandes, JM;

Publicação
26th Iberoamerican Conference on Software Engineering, CIbSE 2023, Montevideo, Uruguay, April 24-28, 2023.

Abstract
Although remote work was already possible and used in some contexts, the COVID-19 pandemic made it normal and, in some situations, even mandatory. This was the case in Portugal and in particular in its software industry. Given this abrupt change in how we work, it became pressing to investigate the impacts of this profound change to remote work, so that we can cope with the potential negative consequences (professional, personal, etc.). Thus, the goal of this work is to study the impact of the referred change to remote work, due to the COVID-19 pandemic, on software professionals in Portugal. To achieve this goal, a survey was prepared and distributed via email, LinkedIn, and Instagram. In total, 176 valid answers were collected from software professionals working in Portugal from 38 different companies. After the performed statistical analysis on the targeted population and focusing on the 10 elaborated research questions, two major findings can be concluded with certainty: (i) having worked in a remote regime before the pandemic period has a strong relationship with a higher frequency of use of teleconference tools after this period, and (ii) participants who do not feel safe about coming back to a fully on-site regime are more likely to prefer a fully remote regime than the ones who feel safe, while the latter group is more likely to prefer a hybrid regime. © 2023 CIbSE 2023 - XXVI Ibero-American Conference on Software Engineering. All rights reserved.

2023

A Backend Platform for Supporting the Reproducibility of Computational Experiments

Autores
Costa, L; Barbosa, S; Cunha, J;

Publicação
CoRR

Abstract

2023

Paint Your Programs Green: On the Energy Efficiency of Data Structures

Autores
Pereira, R; Couto, M; Cunha, J; Melfe, G; Saraiva, J; Fernandes, JP;

Publicação
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abstract
This tutorial aims to provide knowledge on a different facet of efficiency in data structures: energy efficiency. As many recent studies have shown, the main roadblock in regards to energy efficient software development are the misconceptions and heavy lack of support and knowledge, for energy-aware development, that programmers have. Thus, this tutorial aims at helping provide programmers more knowledge pertaining to the energy efficiency of data structures. We conducted two in-depth studies to analyze the performance and energy efficiency of various data structures from popular programming languages: Haskell and Java. The results show that within the Haskell programming language, the correlation between performance and energy consumption is statistically almost identical, while there are cases with more variation within the Java language. We have presented which data structures are more efficient for common operations, such as inserting and removing elements or iterating over the data structure. The results from our studies can help support developers in better understanding such differences within data structures, allowing them to carefully choose the most adequate implementation based on their requirements and goals. We believe that such results will help further close the gap when discussing the lack of knowledge in energy efficient software development. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Teses
supervisionadas

2022

Data-driven Traffic Generation Model for Digital Twins of Wireless Networks

Autor
Catarina Mouro de Sousa

Instituição
UP-FEUP

2018

Altitude Control of an Underwatervehicle Based on Computer Vision

Autor
Pedro Miguel Flores Rodrigues

Instituição
UP-FEUP

2018

App iOS para reconstrução de voz afónica

Autor
Daniel Filipe Soares Gonçalves

Instituição
UP-FEUP

2018

TwitterJam: Identification of Mobility Patterns in Urban Centers Based on Tweets

Autor
Francisco José Moura de Bastos Rebelo

Instituição
UP-FEUP

2018

Text mining marketing analytics: automatic product classification and clustering

Autor
José Miguel da Silva Rodrigues

Instituição
UP-FEUP