Awesome

Distributed Data Structures

Overview

An attempt at modeling various Lattices and CRDTs in Coq and Haskell.

Files

• JoinSemiLattice.v: An experiment in modeling JoinSemiLattices over naturals as outlined by Conway.
• Counters.v: Work in modeling CvRDTs, specifically G-Counters and PN-Counters as outlined by Shapiro.

Outstanding issues

• The current record definiton for CvRDTs does not support multiple update functions. This needs to somehow be adapted for allowing multiple update functions to exist for a given CvRDT. Not sure how to do this.
• How do we use these records for defining and overall signature for CvRDTS?

References

• Conway, Marczak, Alvaro, Hellerstein, Maier, Logic and Lattices in Distributed Programming
• Shapiro, Preguiça, Baquero, Zawirski, A comprehensive study of Convergent and Commutative Replicated Data Types

Copyright

Copyright (C) 2013 Christopher Meiklejohn.