Elastic SI-Cache: consistent and scalable caching in multi-tier architectures

  • Authors:

  • Francisco Perez-Sorrosal;Marta Patiño-Martinez;Ricardo Jimenez-Peris;Bettina Kemme

  • Affiliations:

  • Facultad de Informática, Universidad Politécnica de Madrid, Madrid, Spain;Facultad de Informática, Universidad Politécnica de Madrid, Madrid, Spain;Facultad de Informática, Universidad Politécnica de Madrid, Madrid, Spain;McGill University, Montreal, Canada

  • Venue:
  • The VLDB Journal — The International Journal on Very Large Data Bases
  • Year:
  • 2011

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Abstract

The new vision of cloud computing demands scalable, available and autonomic software platforms in order to deploy applications and services accessible anywhere and anytime. Multi-tier architectures are an important building block for many applications that are deployed in the cloud. This paper presents a novel caching and replication infrastructure that facilitates the scalable and elastic deployment of multi-tier architectures. Our Elastic SI-Cache is a novel multi-version cache that attains high performance and consistency in multi-tier systems. In contrast to most existing caches, Elastic SI-Cache provides snapshot isolation coherently across all tiers. Furthermore, Elastic SI-Cache supports scalable replication of the different tiers where replicas can be added or removed dynamically as needed, making the cache amenable for cloud computing environments. Elastic SI-Cache has been implemented and integrated into an open source JEE application server and its performance evaluated with the industrial benchmark SPECjAppServer.