Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Elasticity

  • Aaron J. Elmore
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_80806

Synonyms

Database-as-a-Service; Elastic databases; Scalability

Definition

Elasticity is a property of distributed databases that expand or contract the use of physical resources (e.g., servers) in response to workload requirements. While similar to scalability, the ability for a system to expand for additional capacity, the notion of elasticity often differs in several ways. Scalable systems can add more resources to either speed up existing workloads or increase performance with a larger data set size. In contrast, elasticity focuses on extending scalable systems to be self-managed and online. For example, a scalable system can be brought offline by an administrator to increase the number of servers, whereas an elastic database would seek to add servers without manual intervention or stopping client requests. Additionally, elasticity explicitly considers the online contraction of resources when the system is over-provisioned. Supporting elasticity requires the ability to monitor...

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Recommended Reading

  1. 1.
    Das S, Agrawal D, El Abbadi A. ElasTraS: an elastic, scalable, and self-managing transactional database for the cloud. ACM Trans Database Syst. 2013;38(1):5.MathSciNetCrossRefGoogle Scholar
  2. 2.
    Schaffner J, Januschowski T, Kercher M, Kraska T, Plattner H, Franklin MJ, Jacobs D. RTP: robust tenant placement for elastic in-memory database clusters. In: Proceedings of the ACM SIGMOD International Conference on Management of Data; 2013. 773–84.Google Scholar
  3. 3.
    Taft R, Mansour E, Serafini M, Duggan J, Elmore AJ, Aboulnaga A, Pavlo A, Stonebraker M. E-store: fine-grained elastic partitioning for distributed transaction processing systems. VLDB. 2014;8(3):245–56.Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Computer ScienceUniversity of ChicagoChicagoUSA