Live migration of virtual machine based on full system trace and replay
Proceedings of the 18th ACM international symposium on High performance distributed computing
The Eucalyptus Open-Source Cloud-Computing System
CCGRID '09 Proceedings of the 2009 9th IEEE/ACM International Symposium on Cluster Computing and the Grid
Proceedings of the VLDB Endowment
Database-Agnostic Transaction Support for Cloud Infrastructures
CLOUD '11 Proceedings of the 2011 IEEE 4th International Conference on Cloud Computing
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Cloud technology is evolving at a rapid pace with innovation occurring throughout the software stack. While updates to Software-as-a-Service (SaaS) products require a simple push of code to the production servers or platform, updates to the Infrastructure-as-a-Service (IaaS) or Platform-as-a-Service (PaaS) layers require more intricate procedures to prevent disruption to services at higher abstraction layers. In this work we address the need for rolling upgrades to PaaS systems. We do so with the App-Scale PaaS, which is amulti-application, multi-language, multi-infrastructure, and multi-datastore platform. Our design and implementation allows for applications and tenants to be migrated live from one cloud deployment to another with guaranteed transaction semantics and minimal performance degradation. In this paper we motivate the need for PaaS migration support and empirically evaluate migrations between two AppScale deployments using highly scalable datastores.