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Sun 20 - Fri 25 October 2019 Athens, Greece
Tue 22 Oct 2019 16:30 - 17:00 at Abbey - Session #4 Chair(s): Andrea Rosà

Modern distributed applications increasingly replicate data in order to guarantee high availability of systems and an optimal user experience. CRDTs are a family of replicated data types specially designed for highly available systems which guarantee some form of eventual consistency. However, memory usage may grow unboundedly in their implementations, as memory management is not tackled in most approaches.

In this paper, we explore a memory management model for operation-based CRDTs in dynamic setting, where nodes can dynamically join a network, and where the implementation can remove unnecessary metadata employed by CRDTs used to determine the order of operations applied in different replicas. We first describe how new nodes will be brought up-to-date and fully linked with other replicas, and later we introduce our memory management model which allows meta-data to be removed.

We benchmark the memory usage of an add-wins set using different garbage collection techniques in various situations and show how our approach can be beneficial in comparison to existing techniques.

Tue 22 Oct

Displayed time zone: Beirut change

16:00 - 17:30
Session #4VMIL at Abbey
Chair(s): Andrea Rosà University of Lugano, Switzerland
Towards seamless interfacing between dynamic languages and native code
Guillaume Bertholon École Normale Supérieure, Stephen Kell University of Kent
Memory efficient CRDTs in dynamic environments
Jim Bauwens Vrije Universiteit Brussel, Elisa Gonzalez Boix Vrije Universiteit Brussel, Belgium
Implementing a Language with Explicit Assignment Semantics
Dimi Racordon University of Geneva, Centre Universitaire d'Informatique, Geneva, Switzerland, Didier Buchs University of Geneva, Centre Universitaire d'Informatique, Geneva, Switzerland