Tale Of Two Workloads
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Presenter
Kenneth Hui
Technology Evangelist
Rackspace
Twitter: @hui_kenneth
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Workload dictates architecture
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Traditional design principles
Monolithic architecture
Stateful Services
Operator focused
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Design goal: Resilient infrastructures
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Cloud-native design principles
Distributed architecture
Developer focused
Stateless Services
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Design assumption: Fragile infrastructures
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What’s Wrong with the Cloud?
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We architect clouds for rapid scale
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Chaos and failures are inevitable at scale
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So design for failure
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Let the Application Handle It’s Own Resiliency
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Build Loosely-Coupled Distributed Systems
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Message Bus
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Focus on Scaling Horizontally
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Choose Cattle Over Pets
• Pets needs care and feeding– Name the VM
– Tune and groom regularly
– Feed pets with good food and supplements
– Take pets to the vet when they are sick
• Cattle are disposable– Cloud instances are not unique– Tune and groom apps not the cattle– Replace when necessary– Shoot the cattle when it is sick
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Embrace Automation and Cultural Change
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