Dropping ACID: Architecting with Eventual Consistency in the Cloud
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  Jason Bloomberg   Jason Bloomberg
Chief Evangelist


Wednesday, August 22, 2012
11:30 AM - 12:15 PM

Level:  Technical - Introductory

It's impossible for any distributed computer system to simultaneously guarantee immediate consistency, availability, and partition tolerance. Most enterprise DBMSs are inherently partition intolerant, thus allowing for ACID transactionality. However, Cloud Computing environments must be partition tolerant in order to achieve the elasticity benefit so important to the Cloud. Highly available Cloud applications must therefore forego immediate data consistency, and with it, ACID. What's left? BASE: Basic availability, soft state, and eventual consistency.

This session will explore how eventual data consistency affects architecting -- and rearchitecting -- applications for a Cloud environment. We'll discard the common misconception that the Cloud is a "virtual server in the sky," and explore how architects must think differently about architecting for Cloud environments vs. traditional on-premise computing.

Attendees of this session will:

  • Get a solid grounding in the CAP theorem and BASE
  • Understand the special data requirements Cloud Computing presents when architecting applications
  • Think differently about basic concepts like transactionality and consistency

Jason Bloomberg is Chief Evangelist at EnterpriseWeb, where he drives the message and the community for EnterpriseWeb’s next generation enterprise platform. He is a global thought leader in the areas of Cloud Computing, Enterprise Architecture, and Service-Oriented Architecture. He is a frequent conference speaker and prolific writer, and he also serves as blogger for DevX. Prior to EnterpriseWeb he was President of ZapThink, where he created the Licensed ZapThink Architect (LZA) SOA course and associated credential, and ran the LZA course as well as his Enterprise Cloud Computing course around the world. He was also the primary contributor to the ZapFlash newsletter and blog for twelve years. Mr. Bloomberg is one of the original Managing Partners of ZapThink LLC, the leading SOA advisory and analysis firm, which was acquired by Dovel Technologies in August 2011.

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