Modular Composition of Coordination Services
Venue
USENIX Annual Technical Conference (ATC) (2016)
Publication Year
2016
Authors
Kfir Lev-Ari, Edward Bortnikov, Idit Keidar, Alexander Shraer
BibTeX
Abstract
Coordination services like ZooKeeper, etcd, Doozer, and Consul are increasingly
used by distributed applications for consistent, reliable, and high-speed
coordination. When applications execute in multiple geographic regions,
coordination service deployments trade-off between performance, (achieved by using
independent services in separate regions), and consistency. We present a system
design for modular composition of services that addresses this trade-off. We
implement ZooNet, a prototype of this concept over ZooKeeper. ZooNet allows users
to compose multiple instances of the service in a consistent fashion, facilitating
applications that execute in multiple regions. In ZooNet, clients that access only
local data suffer no performance penalty compared to working with a standard single
ZooKeeper. Clients that use remote and local ZooKeepers show up to 7x performance
improvement compared to consistent solutions available today.
