Hong Kong HKOUG Meetup: Serverless Architectures and Fn Project

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Serverless Architectures Meetup HonG Kong May 2018 Dr. Frank Munz munz & more

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• Founded munz & more in 2007 • > 15 years Middleware, Multi Cloud, and Distributed Computing • Consulting and High-End Training • Wrote two WebLogic and a Cloud book Dr. Frank Munz @frankmunz

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Agenda • Cloud • The Serverless Journey • FaaS • Fn Project • Q&A @frankmunz

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Clouds!

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API @frankmunz

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Elasticity

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Pay Per Use • ~1 US cent/h (micro instance), with HA & geo-distribution included • You own a massively parallel, distributed and highly available supercomputer with linear costs: 1 instance for 100 hours $= 100 instances for 1h @frankmunz

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Cloud Computing API Elasticity Pay per use Fully Programmable Data Center

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Serverless

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FaaS

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FaaS • AWS announced Lambda in 2014 • Lambda is Function as a Service (FaaS) • Serverless: Abstract away all notion of infrastructure – Automated elasticity – True pay per invocation • Other serverless examples: Messaging, DBs, blob storage -> Future of cloud @frankmunz

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AWS Lambda AWS SAM Local: test and locally run Lambda event: event passed to function context: runtime context callback: optional return (or null) @frankmunz

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Create Lambda S3 @frankmunz

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Example: REST Request

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Cost Savings: Case Studies Expedia(2016): – 2.3 billions calls – 200k hours / month – $ 550 a month Postlight – API GW, Lambda, Serverless – Costs dropped 2 orders of magnitude down to $ 370 https://www.youtube.com/watch?v=gT9x9LnU_rE https://trackchanges.postlight.com/serving-39-million-requests-for-370-month-or-how-we-reduced-our-hosting-costs-by-two-orders-of-edc30a9a88cd http://serverlesscalc.com/ @frankmunz

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Frameworks

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Serverless Frameworks @frankmunz AWS Chalice Portability Complexity Standards

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OS FaaS Platforms

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FaaS OS Frameworks Overlap in functionality -> expect consolidation Who will survive? • Integration: K8s, Traefik, Zipkin, Prometheus, Kafka etc. • Adoption, adoption, adoption • FaaS as PaaS implementation? https://github.com/faas-lane/ FaaS-Lane/tree/master/candidates @frankmunz

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Fn Project • Apache 2, Open Source since Java One 2017 • Fn Server (micro API GW), LB, Flow • Function / Container duality • Docker is only dependency -> polyglot • Helm chart for Kubernetes @frankmunz

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KubeCon • Brand new as of May 2nd, 2018 • Fn is adding support for Cloud Events • You can deploy Fn functions with Serverless.com framework @frankmunz

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Fn Flow Java 8 CompletableFutures API

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Fn Demo?

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Recomendation Engine Mock Demo? https://github.com/fmunz/fn-recommend

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Demo: FaaS Bot?

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Conclusion

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TL;DR #serverless & #FaaS all major clouds / PaaS ⊇ Serverless ⊇ FaaS / FaaS = stateless / true pay per use / automated scalability / event driven / integrates with other CS / architect against vendor lock in / cloud agnostic FaaS frameworks / FaaS frameworks consolidation ahead / Fn is growing + tightly integrated into CNCF @frankmunz