Sérgio Filipe Garrau dos Santos Almeida
Geo-Replication in Large Scale Cloud Computing Applications
Tese submetida para provas de mestrado em Engenharia Informática e de Computadores
Instituto Superior Técnico, Universidade Técnica de Lisboa.
Managing the tradeoffs among consistency, availability, and
scalability, namely in systems supporting Geo-replication, is one of
the most challenging aspects of the design of distributed datastores
for cloud-computing applications. As a result, several combinations
of different con- sistency guarantees and replication protocols have
been proposed in the last few years. The work described in this
report makes a step forward in this path, by proposing a novel dis-
tributed datastore design, named ChainReaction, that offers causal+
consistency, with high performance, fault-tolerance, and
scalability. We introduce a new replication technique based on Chain
Replication, a very interesting replication technique that provides
linearizability and high performance in a very simple way. Our
approach avoids the bottlenecks of linearizability while providing
competitive performance when compared with systems merely offering
eventual consistency. Furthermore, ChainReaction can be deployed
both in a single datacenter and Geo- replicated scenarios, over
multiple datacenters. We have experimentally evaluated the benefits
of our approach by applying the Yahoo Cloud Serving Benchmark to a
prototype deployment that includes our own solution as well as
Apache Cassandra and FAWN-KV. Finally, our solution also provides a
transactional construct that allows a client obtain the value of
multiple objects in a consistent way. Experimental results show that
this extension has no negative impact on the performance of
- Geo-Replication in Large Scale Cloud Computing Applications
- Sérgio Filipe Garrau dos Santos Almeida
- MSc Thesis. Instituto Superior Técnico,
Universidade Técnica de Lisboa.
- October, 2012.
- Available BibTeX, MSC Thesis, extended abstract of the
thesis, and mid-term
- ChainReaction: uma
Variante de Replicação em Cadeia com Coerência Causal+.
- S. Almeida, J. Leitão, and
- Actas do quarto Simpósio de Informática
(Inforum), Caparica, Portugal, Sep, 2012
- Available BibTeX, extended
- ChainReaction a Causal+ Consistent Datastore based
on Chain Replication.
- S. Almeida,
J. Leitão and L. Rodrigues.
- Proceedings of the EuroSys
2013, Prague, Czech Republic, April 2013.
- Available BibTeX, abstract (html).