publications

2023

1. Procedia

   RapiTest: Continuous Black-Box Testing of RESTful Web APIs

   Duarte Felı́cio, José Simão, and Nuno Datia

   Procedia Computer Science, 2023

   CENTERIS – International Conference on ENTERprise Information Systems / ProjMAN – International Conference on Project MANagement / HCist – International Conference on Health and Social Care Information Systems and Technologies 2022

   Abs

   When it comes to web services, RESTful web APIs have become the de facto standard since 2000. Those APIs expose back-end data, so it is crucial that they are robust, secure, and reliable to keep sensitive data protected. Although existing tools for automating APIs test case generation have shown significant potential, they are limited in their applicability since they focus solely on random inputs through fuzzing. Using only API specifications, it is impractical to describe personalized and specific test case workflows. This paper introduces RapiTest, an open-source continuous black-box testing application for RESTful web APIs. It takes advantage of the API specification to automatically generate tests, but also makes use of a new DSL named Test Specification Language (TSL), to create rich test cases. The RapiTest web application allows the setup of several predefined verifications, regarding security and correctness of the responses, while running the tests at regular intervals, such as every 24 hours. In this way, the API can be monitored continuously to ensure it is running correctly.

2. Algorithms

   IRONEDGE: Stream Processing Architecture for Edge Applications

   João Pedro Vitorino, José Simão, Nuno Datia, and 1 more author

   Algorithms, 2023

   PDF

2022

1. FI

   QuickFaaS: Providing Portability and Interoperability between FaaS Platforms

   Pedro Rodrigues, Filipe Freitas, and José Simão

   Future Internet, 2022

   PDF
2. ESOCC

   QuickFaaS: Providing Portability and Interoperability Between FaaS Platforms

   Pedro Rodrigues, Filipe Freitas, and José Simão

   In Advances in Service-Oriented and Cloud Computing - International Workshops of ESOCC 2022, Wittenberg, Germany, March 22-24, 2022, Revised Selected Papers, 2022

2021

1. Distributed and Decentralized Orchestration of Containers on Edge Clouds

   André Pires, José Simão, and Luı́s Veiga

   J. Grid Comput., 2021

   Abs

   Cloud Computing has been successful in providing substantial amounts of resources to deploy scalable and highly available applications. However, there is a growing necessity of lower latency services and cheap bandwidth access to accommodate the expansion of IoT and other applications that reside at the internet’s edge. The development of community networks and volunteer computing, together with the today’s low cost of compute and storage devices, is making the internet’s edge filled with a large amount of still underutilized resources. Due to this, new computing paradigms like Edge Computing and Fog Computing are emerging. This work presents Caravela a Docker’s container orchestrator that utilizes volunteer edge resources from users to build an Edge Cloud where it is possible to deploy applications using standard Docker containers. Current cloud solutions are mostly tied to a centralized cluster environment deployment. Caravela employs a completely decentralized architecture, resource discovery and scheduling algorithms to cope with (1) the large amount of volunteer devices, volatile environment, (2) wide area networks that connects the devices and (3) nonexistent natural central administration.

2. RATEE - Resource Auction Trading at Edge Environments

   Diogo Paulo Dias, José Simão, and Luı́s Veiga

   In 20th IEEE International Symposium on Network Computing and Applications, NCA 2021, Boston, MA, USA, November 23-26, 2021, 2021

2020

1. Programming languages for data-Intensive HPC applications: A systematic mapping study

   Vasco Amaral, Beatriz Norberto, Miguel Goulão, and 17 more authors

   Parallel Comput., 2020

2019

1. GC-Wise: A Self-adaptive approach for memory-performance efficiency in Java VMs

   José Simão, Sérgio Esteves, André Pires, and 1 more author

   Future Gener. Comput. Syst., 2019
2. EuroSys ’19

   Runtime Object Lifetime Profiler for Latency Sensitive Big Data Applications

   Rodrigo Bruno, Duarte Patrı́cio, José Simão, and 2 more authors

   In Proceedings of the Fourteenth EuroSys Conference 2019, Dresden, Germany, March 25-28, 2019, 2019
3. Oversubscribing micro-clouds with energy-aware containers scheduling

   Sergio Mendes, José Simão, and Luı́s Veiga

   In Proceedings of the 34th ACM/SIGAPP Symposium on Applied Computing, SAC 2019, Limassol, Cyprus, April 8-12, 2019, 2019

2018

1. EcoVMbroker: energy-aware scheduling for multi-layer datacenters

   Rodrigo Fernandes, José Simão, and Luı́s Veiga

   In Proceedings of the 33rd Annual ACM Symposium on Applied Computing, SAC 2018, Pau, France, April 09-13, 2018, 2018
2. ROLP: Runtime Object Lifetime Profiling for Big Data Memory Management

   Rodrigo Bruno, Duarte Patrı́cio, José Simão, and 2 more authors

   CoRR, 2018

2017

1. NGSPipes: Fostering Reproducibility and Scalability in Biosciences

   Bruno Dantas, Calmenelias Fleitas, Alexandre Almeida, and 4 more authors

   In Proceedings of the 8th ACM International Conference on Bioinformatics, Computational Biology, and Health Informatics, BCB 2017, Boston, MA, USA, August 20-23, 2017, 2017
2. Locality-Aware GC Optimisations for Big Data Workloads

   Duarte Patrı́cio, Rodrigo Bruno, José Simão, and 2 more authors

   In On the Move to Meaningful Internet Systems. OTM 2017 Conferences - Confederated International Conferences: CoopIS, C&TC, and ODBASE 2017, Rhodes, Greece, October 23-27, 2017, Proceedings, Part II, 2017
3. FairCloud: Truthful Cloud Scheduling with Continuous and Combinatorial Auctions

   Artur Fonseca, José Simão, and Luı́s Veiga

   In On the Move to Meaningful Internet Systems. OTM 2017 Conferences - Confederated International Conferences: CoopIS, C&TC, and ODBASE 2017, Rhodes, Greece, October 23-27, 2017, Proceedings, Part II, 2017
4. SmartGC: Online Memory Management Prediction for PaaS Cloud Models

   José Simão, Sérgio Esteves, and Luı́s Veiga

   In On the Move to Meaningful Internet Systems. OTM 2017 Conferences - Confederated International Conferences: CoopIS, C&TC, and ODBASE 2017, Rhodes, Greece, October 23-27, 2017, Proceedings, Part I, 2017
5. Springer CC

   A Taxonomy of Adaptive Resource Management Mechanisms in Virtual Machines: Recent Progress and Challenges

   José Simão, and Luı́s Veiga

   In Cloud Computing - Principles, Systems and Applications, Second Edition, 2017
6. Cloud-Supported Certification for Energy-Efficient Web Browsing and Services

   Gonçalo Avelar, José Simão, and Luı́s Veiga

   In Cloud Computing - Principles, Systems and Applications, Second Edition, 2017
7. Beyond NGS data sharing and towards open science

   Bruno Dantas, Calmenelias Fleitas, Alexandre P. Francisco, and 2 more authors

   CoRR, 2017
8. Gang-GC: Locality-aware Parallel Data Placement Optimizations for Key-Value Storages

   Duarte Patrı́cio, José Simão, and Luı́s Veiga

   CoRR, 2017

2016

1. IEEE TCC

   Partial Utility-Driven Scheduling for Flexible SLA and Pricing Arbitration in Clouds

   José Simão, and Luı́s Veiga

   IEEE Trans. Cloud Comput., 2016

2013

1. Adaptability Driven by Quality of Execution in High Level Virtual Machines for Shared Cloud Environments

   José Simão, and Luı́s Veiga

   Comput. Syst. Sci. Eng., 2013
2. Flexible SLAs in the Cloud with a Partial Utility-Driven Scheduling Architecture

   José Simão, and Luı́s Veiga

   In IEEE 5th International Conference on Cloud Computing Technology and Science, CloudCom 2013, Bristol, United Kingdom, December 2-5, 2013, Volume 1, 2013
3. Resource-Aware Scaling of Multi-threaded Java Applications in Multi-tenancy Scenarios

   José Simão, Navaneeth Rameshan, and Luı́s Veiga

   In IEEE 5th International Conference on Cloud Computing Technology and Science, CloudCom 2013, Bristol, United Kingdom, December 2-5, 2013, Volume 1, 2013
4. A Comparative Look at Adaptive Memory Management in Virtual Machines

   José Simão, Jeremy Singer, and Luı́s Veiga

   In IEEE 5th International Conference on Cloud Computing Technology and Science, CloudCom 2013, Bristol, United Kingdom, December 2-5, 2013, Volume 1, 2013
5. Ditto - Deterministic Execution Replayability-as-a-Service for Java VM on Multiprocessors

   João M. Silva, José Simão, and Luı́s Veiga

   In Middleware 2013 - ACM/IFIP/USENIX 14th International Middleware Conference, Beijing, China, December 9-13, 2013, Proceedings, 2013
6. A progress and profile-driven cloud-VM for resource-efficiency and fairness in e-science environments

   José Simão, and Luı́s Veiga

   In Proceedings of the 28th Annual ACM Symposium on Applied Computing, SAC ’13, Coimbra, Portugal, March 18-22, 2013, 2013

2012

1. A checkpointing-enabled and resource-aware Java Virtual Machine for efficient and robust e-Science applications in grid environments

   José Simão, Tiago Garrochinho, and Luı́s Veiga

   Concurr. Comput. Pract. Exp., 2012
2. Jano: location-privacy enforcement in mobile and pervasive environments through declarative policies

   José Simão, Carlos Ribeiro, Paulo Ferreira, and 1 more author

   J. Internet Serv. Appl., 2012
3. VM Economics for Java Cloud Computing: An Adaptive and Resource-Aware Java Runtime with Quality-of-Execution

   José Simão, and Luı́s Veiga

   In 12th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing, CCGrid 2012, Ottawa, Canada, May 13-16, 2012, 2012
4. A classification of middleware to support virtual machines adaptability in IaaS

   José Simão, and Luı́s Veiga

   In Proceedings of the 11th Workshop on Adaptive and Reflective Middleware, ARM 2012, held at the ACM/IFIP/USENIX International Middleware Conference, December 4, 2012, Montreal, QC, Canada, 2012
5. QoE-JVM: An Adaptive and Resource-Aware Java Runtime for Cloud Computing

   José Simão, and Luı́s Veiga

   In On the Move to Meaningful Internet Systems: OTM 2012, Confederated International Conferences: CoopIS, DOA-SVI, and ODBASE 2012, Rome, Italy, September 10-14, 2012. Proceedings, Part II, 2012

2011

1. A2 -VM : A Cooperative Java VM with Support for Resource-Awareness and Cluster-Wide Thread Scheduling

   José Simão, João Lemos, and Luı́s Veiga

   In On the Move to Meaningful Internet Systems: OTM 2011 - Confederated International Conferences: CoopIS, DOA-SVI, and ODBASE 2011, Hersonissos, Crete, Greece, October 17-21, 2011, Proceedings, Part I, 2011

2010

1. Jano: specification and enforcement of location privacy in mobile and pervasive environments

   José Simão, Carlos Ribeiro, Paulo Ferreira, and 1 more author

   In Proceedings of the 2nd International Workshop on Middleware for Pervasive Mobile and Embedded Computing (M-MPAC 2010), November 29, 2010, Bangalore, India, 2010