Wed 17 Jun 2015 09:15 - 09:40 at PLDI Main RED (Portland 256) - Semantics II Chair(s): Robby Findler

User-facing online services utilize geo-distributed data stores to minimize latency and tolerate partial failures, with the intention to provide a fast, always-on experience. However, geo-distribution does not come for free; application developers have to contend with weak consistency behaviors, and the lack of abstractions to composably construct high-level replicated data types, necessitating the need for complex application logic and invariably exposing inconsistencies to the user. Some commercial distributed data stores and several academic proposals provide a lattice of consistency levels, with stronger consistency guarantees incurring increased latency and throughput costs. However, correctly assigning the right consistency level for an operation requires subtle reasoning and is often an error-prone task.

In this paper, we present Quelea, a declarative programming model for eventually consistent data stores (ECDS), equipped with a contract language, capable of specifying fine-grained application-level consistency properties. A contract enforcement system analyses contracts, and automatically generates the appropriate consistency protocol for the method protected by the contract. We describe an implementation of Quelea on top of an off-the-shelf ECDS, and provide support for coordination-free transactions. Several benchmarks including two large web applications, illustrate the effectiveness of our approach.

PLDI 2015 Artifact Evaluated Badge

Wed 17 Jun

pldi2015-papers
09:15 - 10:55: Research Papers - Semantics II at PLDI Main RED (Portland 256)
Chair(s): Robby FindlerNorthwestern University
pldi2015-papers143452530000009:15 - 09:40
Talk
KC SivaramakrishnanUniversity of Cambridge, Gowtham KakiPurdue University, Suresh JagannathanPurdue University
Media Attached
pldi2015-papers143452680000009:40 - 10:05
Talk
Jeremy G. SiekIndiana University, Peter ThiemannUniversity of Freiburg, Philip WadlerUniversity of Edinburgh
Media Attached
pldi2015-papers143452830000010:05 - 10:30
Talk
Yizhou ZhangCornell University, Andrew Myers, Barbara LiskovMIT, Guido SalvaneschiTU Darmstadt, Matt LoringCornell University
Media Attached
pldi2015-papers143452980000010:30 - 10:55
Talk
Phúc C. Nguyễn, David Van HornUniversity of Maryland, College Park
Media Attached