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A Rigorous Approach to Consistency in Cloud Databases

Total Cost €


EC-Contrib. €






Project "RACCOON" data sheet

The following table provides information about the project.


Organization address
postcode: 28223

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Spain [ES]
 Total cost 1˙498˙312 €
 EC max contribution 1˙498˙312 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-STG
 Funding Scheme ERC-STG
 Starting year 2017
 Duration (year-month-day) from 2017-01-01   to  2021-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Modern Internet services store data in novel cloud databases, which partition and replicate the data across a large number of machines and a wide geographical span. To achieve high availability and scalability, cloud databases need to maximise the parallelism of data processing. Unfortunately, this leads them to weaken the guarantees they provide about data consistency to applications. The resulting programming models are very challenging to use correctly, and we currently do not have advanced methods and tools that would help programmers in this task.

The goal of the project is to develop a synergy of novel reasoning methods, static analysis tools and database implementation techniques that maximally exploit parallelism inside cloud databases, while enabling application programmers to ensure correctness. We intend to achieve this by first developing methods for reasoning formally about how weakening the consistency guarantees provided by cloud databases affects application correctness and the parallelism allowed inside the databases. This will build on techniques from the areas of programming languages and software verification. The resulting theory will then serve as a basis for practical implementation techniques and tools that harness database parallelism, but only to the extent such that its side effects do not compromise application correctness.

The proposed project is high-risk, because it aims not only to develop a rigorous theory of consistency in cloud databases, but also to apply it to practical systems design. The project is also high-gain, since it will push the envelope in availability, scalability and cost-effectiveness of cloud databases.


year authors and title journal last update
List of publications.
2019 Alexey Gotsman, Anatole Lefort and Gregory Chockler
White-box atomic multicast
published pages: , ISSN: , DOI:
DSN\'19: International Conference on Dependable Systems and Networks 2019-09-02
2017 Alexey Gotsman and Sebastian Burckhardt
Consistency models with global operation sequencing and their composition
published pages: 23:1-23:16, ISSN: , DOI:
DISC\'17: International Symposium on Distributed Computing 2019-09-02
2018 Álvaro García-Pérez, Alexey Gotsman
Federated Byzantine quorum systems
published pages: 17:1-17:16,, ISSN: , DOI:
OPODIS\'18: International Conference on Principles of Distributed Systems 2019-09-02
2018 Gregory Chockler and Alexey Gotsman
Multi-shot distributed transaction commit
published pages: 14:1-14:18, ISSN: , DOI:
DISC\'18: International Symposium on Distributed Computing 2019-09-02
2019 Manuel Bravo, Alexey Gotsman
Reconfigurable atomic transaction commit
published pages: , ISSN: , DOI:
PODC\'19: Symposium on Principles of Distributed Computing 2019-09-02
2018 Álvaro García-Pérez, Alexey Gotsman, Yuri Meshman, and Ilya Sergey
Paxos consensus, deconstructed and abstracted
published pages: 912-939, ISSN: , DOI:
ESOP\'18: European Symposium on Programming 2019-09-02
2018 Andrea Cerone, Alexey Gotsman
Analysing snapshot isolation
published pages: 11:1-11:41, ISSN: 0004-5411, DOI:
Journal of the ACM (JACM) Volume 65, Issue 2 2019-09-02
2017 Andrea Cerone, Alexey Gotsman, and Hongseok Yang
Algebraic laws for weak consistency
published pages: 26:1-26:18, ISSN: , DOI:
CONCUR\'17: International Conference on Concurrency Theory 2019-09-02
2019 Artem Khyzha, Hagit Attiya and Alexey Gotsman
Privatization-safe transactional memories
published pages: , ISSN: , DOI:
DISC\'19: International Symposium on Distributed Computing 2019-08-29

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The information about "RACCOON" are provided by the European Opendata Portal: CORDIS opendata.

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