Cookies
Usamos cookies para melhorar nosso site e a sua experiência. Ao continuar a navegar no site, você aceita a nossa política de cookies. Ver mais
Aceitar Rejeitar
  • Menu
Sobre
Download foto HD

Sobre

Colaborei no projecto Europeu GORDA, cujo objectivo era fomentar a utilização de replicação de base de dado como forma de resolver os desafios encontrados nos sistemas de base de dados actuais. O meu trabalho foi de dotar o projecto com uma consola gráfica de monitorização e gestão utilizando JMX.

Também estive envolvida no projecto P-SON, em particular no desenvolvimento de aplicações para o protocolo de disseminação epidémica NeEM. Neste contexto, trabalhei numa arquitectura de caching e disseminação de feeds RSS que utiliza redes P2P para este fim e, posteriormente, numa arquitectura genérica content-push baseada em feeds Web e serviços e redes sociais, no qual se baseou a minha dissertação de Mestrado. Também trabalhei num protocolo e disseminação epidémica que tira partido dos interesses partilhados dos participantes sem chegar a revelá-los.

No contexto do meu Doutoramento, o meu trabalho focou-se na forma de aproximar as aplicações tradicionais centradas numa base de dados e as promessas de alta disponibilidade.

Actualmente, faço parte do projecto europeu CloudDBAppliance e tenho estado, também, a colaborar com o CPES no contexto dos projectos europeus UPGRID e InteGrid.

Tópicos
de interesse
Detalhes

Detalhes

  • Nome

    Ana Nunes Alonso
  • Cargo

    Investigador Auxiliar
  • Desde

    01 fevereiro 2012
  • Nacionalidade

    Portugal
  • Contactos

    +351253604440
    ana.n.alonso@inesctec.pt
007
Publicações

2020

A Comparison of Message Exchange Patterns in BFT Protocols: (Experience Report)

Autores
Silva, F; Alonso, A; Pereira, J; Oliveira, R;

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

Abstract
The performance and scalability of byzantine fault-tolerant (BFT) protocols for state machine replication (SMR) have recently come under scrutiny due to their application in the consensus mechanism of blockchain implementations. This led to a proliferation of proposals that provide different trade-offs that are not easily compared as, even if these are all based on message passing, multiple design and implementation factors besides the message exchange pattern differ between each of them. In this paper we focus on the impact of different combinations of cryptographic primitives and the message exchange pattern used to collect and disseminate votes, a key aspect for performance and scalability. By measuring this aspect in isolation and in a common framework, we characterise the design space and point out research directions for adaptive protocols that provide the best trade-off for each environment and workload combination. © IFIP International Federation for Information Processing 2020.

2020

Building a Polyglot Data Access Layer for a Low-Code Application Development Platform: (Experience Report)

Autores
Nunes Alonso, A; Abreu, J; Nunes, D; Vieira, A; Santos, L; Soares, T; Pereira, J;

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

Abstract
Low-code application development as proposed by the OutSystems Platform enables fast mobile and desktop application development and deployment. It hinges on visual development of the interface and business logic but also on easy integration with data stores and services while delivering robust applications that scale. Data integration increasingly means accessing a variety of NoSQL stores. Unfortunately, the diversity of data and processing models, that make them useful in the first place, is difficult to reconcile with the simplification of abstractions exposed to developers in a low-code platform. Moreover, NoSQL data stores also rely on a variety of general purpose and custom scripting languages as their main interfaces. In this paper we report on building a polyglot data access layer for the OutSystems Platform that uses SQL with optional embedded script snippets to bridge the gap between low-code and full access to NoSQL stores. © IFIP International Federation for Information Processing 2020.

2019

Towards Intra-Datacentre High-Availability in CloudDBAppliance

Autores
Ferreira, L; Coelho, F; Alonso, AN; Pereira, J;

Publicação
Proceedings of the 9th International Conference on Cloud Computing and Services Science

Abstract

2019

Recovery in CloudDBAppliance’s High-availability Middleware

Autores
Abreu, H; Ferreira, L; Coelho, F; Alonso, AN; Pereira, J;

Publicação
Proceedings of the 8th International Conference on Data Science, Technology and Applications

Abstract

2017

Towards new data management platforms for a DSO as market enabler – UPGRID Portugal demo

Autores
Alonso, A; Couto, R; Pacheco, H; Bessa, R; Gouveia, C; Seca, L; Moreira, J; Nunes, P; Matos, PG; Oliveira, A;

Publicação
CIRED - Open Access Proceedings Journal

Abstract

Teses
supervisionadas

2018

Recuperação de Transações em Bases de Dados NoSQL

Autor
José Carlos Vieira Morais

Instituição
UM