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© 2016 Mesosphere, Inc. All Rights Reserved. FROM PETS TO CATTLE TO FLOCK OF BIRDS 1 Michael Hausenblas, Developer & Cloud Advocate | FOSDEM, Brussels | 2016-01-30

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© 2015 Mesosphere, Inc. All Rights Reserved. sys admin devops developer architect management QA/tester

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© 2016 Mesosphere, Inc. All Rights Reserved. EVOLUTION OF COMPUTE 3 containers flock of birds

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© 2016 Mesosphere, Inc. All Rights Reserved. PETS VS CATTLE 4 Pets are individuals that you give names and when they get ill you nurse them back to health. Cattle are anonymous, identical to other cattle you assign numbers and when they get ill → next one. http://www.theregister.co.uk/2013/03/18/servers_pets_or_cattle_cern/

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© 2016 Mesosphere, Inc. All Rights Reserved. APPLICATION LIFE CYCLE 5

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© 2016 Mesosphere, Inc. All Rights Reserved. WHAT IS FLOCK OF BIRDS (FOB)? 6 https://medium.com/@mhausenblas/pets-vs-cattle-vs-flock-of-birds-12f1da3abfc3

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© 2016 Mesosphere, Inc. All Rights Reserved. FLOCK OF BIRDS CONCEPT 7 • Unit of compute: a function • Dynamically allocated resources for execution • Integration with other systems is crucial • Relation to … • PaaS • RPC λ C

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© 2016 Mesosphere, Inc. All Rights Reserved. CONTENDERS & USAGE 8

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© 2016 Mesosphere, Inc. All Rights Reserved. AWS LAMBDA 9 https://aws.amazon.com/lambda/

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© 2016 Mesosphere, Inc. All Rights Reserved. WEBTASK 10 https://webtask.io/

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© 2016 Mesosphere, Inc. All Rights Reserved. STACKHUT 11 https://stackhut.com

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© 2016 Mesosphere, Inc. All Rights Reserved. NANO LAMBDA 12 http://nano-lambda.com/

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© 2016 Mesosphere, Inc. All Rights Reserved. WHAT IS FLOCK OF BIRDS GOOD FOR? 13 • Constraints devices (IoT) • Event-driven logic (IFTTT, hooks, etc.) • Mobile (stateless) apps • Distributed load testing (see Goad)

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© 2016 Mesosphere, Inc. All Rights Reserved. THINGS TO THINK ABOUT 14

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© 2016 Mesosphere, Inc. All Rights Reserved. STATE 15

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© 2016 Mesosphere, Inc. All Rights Reserved. DEBUGGING 16

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© 2016 Mesosphere, Inc. All Rights Reserved. SOME OTHER THINGS TO CONSIDER … 17 • network is the bottleneck • chaining • monitoring, logging • build your own?

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© 2016 Mesosphere, Inc. All Rights Reserved. Q & A 18 • @mhausenblas • mhausenblas.info • @mesosphere