design for failure is the path to success in cloud
DESCRIPTION
Design For Failure Is The Path To Success In Cloud. Ashay Chaudhary. Requirements. Journey thru the computing models. Mainframe Desktop Client-Server Internet Cloud Computing. Reliability Availability Serviceability Performance + Security + Agility. Evolution of Requirements. - PowerPoint PPT PresentationTRANSCRIPT
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Design For Failure Is The Path To Success In CloudAshay Chaudhary
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REQUIREMENTSJourney thru the computing models
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Evolution of Requirements
• Mainframe• Desktop• Client-Server
• Internet
• Cloud Computing
• Reliability• Availability• Serviceability• Performance
+• Security
+• Agility
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AVAILABILITYNon-Cloud Model
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Guiding Principles
• Design for Non-Failure• Deploy with Redundancy• Manage Effectively
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• Design for Non-Failure• Quality
Hardware
• Deploy with Redundancy• Specialty
Hardware• Manage
Effectively• Expert Staff• Processes
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AVAILABILITYCloud Model
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Guiding Principles
• Design for Failure• Design for Redundancy• Monitor Extensively• Track Dependencies
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Design For Failure
• Assume nothing• Expect failures• Anywhere and everywhere• If it is available now, doesn’t mean it is there later
• Failures cascade• Unhandled failures propagate• Poorly handled failures adds complexity• Difficulty increases exponentially with complexity
• Embrace failure, make it a first class citizen
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Handle All Failures
• Unhandled failures is a very bad idea• Poorly handled trivial failure in one part
becomes a critical one somewhere else• Two types of failures: Transient and Resource• Transient failures are difficult, treat them like
Resource failures and fail fast• Delays are transient failures, define response
time guarantees• Failure injection is a lifestyle
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Design For Redundancy
• Eliminate single points of failure• Architect distributed applications• Minimize duration of statefulness
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Monitor Extensively
• Self assess and report health• Complementary external monitoring• Load and latency monitoring• Proactively restart components
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Track Dependencies
• Identify all dependencies• Hardware, 3rd Party Libraries, Other servers, Network• Infrastructure/Platform services, External services• Your own components
• Track their health and availability
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Key Takeaways
• If there’s only one thing you could do• Design for Failure
• It is a paradigm shift• It is a cultural change• It is not easy
• It is the key to success in the cloud
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Ashay ChaudharyCloud Consultant
Corporate EducationPrivate Cloud SolutionsHighly Scalable SaaS ApplicationsSaaS Business Intelligence & Analytics
[email protected]@ashay_c