Delta State replicated data types

• Tipo: Artigo em Revista Científica Internacional
• Data: 2018

Autores

Almeida, PS (Autor) Outra; Shoker, A (Autor) Outra; Baquero, C (Autor) Outra

Revista

Título: Journal of Parallel and Distributed Computing

Vol. 111

Páginas: 162-173

ISSN: 0743-7315

Editora: Elsevier

Indexação

ISI Web of Knowledge - 29 Citações

Scopus - 42 Citações

Outras Informações

ID Authenticus: P-00K-AM2

DOI: 10.1016/j.jpdc.2017.08.003

Abstract (EN): Conflict-free Replicated Data Types (CRDTs) are distributed data types that make eventual consistency of a distributed object possible and non ad-hoc. Specifically, state-based CRDTs ensure convergence through disseminating the entire state, that may be large, and merging it to other replicas. We introduce Delta State Conflict-Free Replicated Data Types (delta-CRDT) that can achieve the best of both operation-based and state-based CRDTs: small messages with an incremental nature, as in operation-based CRDTs, disseminated over unreliable communication channels, as in traditional state-based CRDTs. This is achieved by defining delta-mutators to return a delta-state, typically with a much smaller size than the full state, that to be joined with both local and remote states. We introduce the delta-CRDT framework, and we explain it through establishing a correspondence to current state-based CRDTs. In addition, we present an anti-entropy algorithm for eventual convergence, and another one that ensures causal consistency. Finally, we introduce several delta-CRDT specifications of both well-known replicated datatypes and novel datatypes, including a generic map composition.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12