Crafting IT solutions that make businesses thrive
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This document discusses serverless computing and functions as a service (FaaS). It begins by defining serverless and FaaS, noting that FaaS is a means to achieve serverless architectures. It then charts the evolution of infrastructure models from on-premise hardware to platform as a service (PaaS) and container as a service (CaaS). The document examines the financial model of FaaS, how it incentivizes modularization. It provides examples of pricing for AWS Lambda. It also outlines some common serverless platforms, use cases, considerations for the future of serverless, and concludes with contact information for the author.
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Crafting IT solutions that make businesses thrive
- 1. Crafting integrated IT solutions that make your business thrive. Jeroen Sterken IT Coordinator jeroen.sterken@faros.be @jeroensterken www.faros.be | info@faros.be Invisible infrastructure: the future of development
- 2. Serverless/FaaS 4/09/2018Invisible infrastructure: the future of development 2 Noun A buzz word that’s often used in bold statements, like:
- 3. Serverless ... It’s just a name • We could have called it “Jeff” • It’s NOT about removing the servers • “Server”-”less” is a pretty descriptive name in the end 4/09/2018Invisible infrastructure: the future of development 3
- 4. Serverless/FaaS • FaaS • A mean to achieve the serverless • ‘Small’ isolated task triggered by an event that runs … somehow on an as-needed basis 4/09/2018Invisible infrastructure: the future of development 4 monolith microservices functions
- 5. Evolution 4/09/2018Invisible infrastructure: the future of development 5
- 6. Evolution 4/09/2018Invisible infrastructure: the future of development 6 1 . h a r d w a r e a n d h o s t e d s y s t e m s o n p r e m i s e “I love the smell of a new Sun server in the morning”
- 7. Evolution 4/09/2018Invisible infrastructure: the future of development 7 2 . r e n t i n g h a r d w a r e
- 8. Evolution 4/09/2018Invisible infrastructure: the future of development 8 3 . I a a S – I n f r a s t r u c t u r e A s A S e r v i c e This IaaS .. it’s huuuuuge
- 9. Evolution • Next level of abstraction • Rent out complete development platforms 4/09/2018Invisible infrastructure: the future of development 9 4 . P a a S – P l a t f o r m A s A S e r v i c e …
- 10. Evolution • CaaS: Container as a Service 4/09/2018Invisible infrastructure: the future of development 10 4 ’ . C a a S – C o n t a i n e r A s A S e r v i c e
- 11. T h e e n d - s t a t e o f i n f r a s t r u c t u r e a s w e c u r r e n t l y k n o w i t , u s i n g v i r t u a l i z a t i o n , g r i d a n d a u t o m a t e d m a n a g e m e n t t e c h n o l o g i e s t o d e l i v e r i n f r a s t r u c t u r a l s e r v i c e s 4/09/2018Invisible infrastructure: the future of development 11
- 12. Serverless 4/09/2018Invisible infrastructure: the future of development 12 W h y t h e b u z z ? Source: https://www.capgemini.com/be-en/service/technovision-2017/
- 13. Financial model S e r v e r l e s s 4/09/2018Invisible infrastructure: the future of development 13
- 14. Financial model • Pay for running a server/VM (Reserved computing capacity) • Provisioning VM is cheap/fast compared to physical servers 4/09/2018Invisible infrastructure: the future of development 14 < F a a S hardware on premise hardware renting IaaS PaaS pay/server
- 15. Financial model • Incentive = bundling services/applications in a server 4/09/2018Invisible infrastructure: the future of development 15 < F a a S architecture deployment model modular loose coupling bundling
- 16. Financial model • Pay/execution/memory • Financial incentive • Modularize / loose coupling • No penalty for multi-versioning 4/09/2018Invisible infrastructure: the future of development 16 F a a S DOC monolith microservices functions SVG PDF
- 17. Financial model • Only charged when used, based on : • Maximum memory size (GB) • Function execution time (seconds) • Unit • GB-sec : gigabyte-seconds • Additional charges • (external) data transfer • S3 • Dynamo • https://aws.amazon.com/lambda/pricing/ 4/09/2018Invisible infrastructure: the future of development 17 F a a S - A W S P r i c i n g
- 18. Financial model • Example: 1 Function • 256 MB (= 0.25 GB) • 10 million requests/month (duration = 1 sec/request) • Let’s do the math! • 10 million requests * 1sec/request = 10,000,000 seconds (execution time) • 0.25 GB * 10,000,000 sec = 2.500.000 GB-sec - 400,000 GB-sec (free) 2,100,000 GB-sec • 2,100,000 GB-sec * $0.00001667 / GB-sec = $35.01 4/09/2018Invisible infrastructure: the future of development 18 F a a S - A W S P r i c i n g
- 19. Financial model 4/09/2018Invisible infrastructure: the future of development 19 F a a S - A W S P r i c i n g
- 20. R a n g i n g f r o m 5 0 p e r c e n t t o 9 0 p e r c e n t , w i t h 7 0 p e r c e n t t o 8 0 p e r c e n t a v e r a g e 4/09/2018Invisible infrastructure: the future of development 20 Source: https://www.accenture.com/us-en/insights/cloud/serverless-computing-cloud-evolution
- 21. Serverless P l a t f o r m s & u s e c a s e s 4/09/2018Invisible infrastructure: the future of development 21
- 22. Serverless 4/09/2018Invisible infrastructure: the future of development 22 P l a t f o r m s AWS lambda apache azure functions google cloud functions
- 23. Use cases 4/09/2018Invisible infrastructure: the future of development 23 W e b a p p l i c a t i o n s a n d b a c k e n d s
- 24. Use cases 4/09/2018Invisible infrastructure: the future of development 24 D a t a p r o c e s s i n g
- 25. Let’s do some coding! 4/09/2018Invisible infrastructure: the future of development 25
- 26. Random Number Generator 4/09/2018Invisible infrastructure: the future of development 26 Randon number generator http://..../number 6 6
- 27. Future of Serverless 4/09/2018Invisible infrastructure: the future of development 27
- 28. Future of Serverless • Pros • Hidden infrastructure (no-ops) • Lower operational cost / pay-per-use model • Time to market • Auto scaling • Encouraged to think small / event-driven / loose coupling • Cons • Development • Vendor lock-in / Cloud provider centered • Re-thinking session/authorization • Managing lot’s of functions • Cold start • AWS lambda : 300 seconds limit 4/09/2018Invisible infrastructure: the future of development 28 E v e r y t h i n g F a a S ?
- 29. Future of Serverless • Use cases • IoT, mobile applications and web-based applications, … • Combination of microservices & Lambda’s • Shift • Embrace devops culture • Cultural shift • Developer shift • Create reference architecture to guide app development • Do NOT reuse existing code • Use Platform services for non-business logic • Community / management / tooling / best practices in full progress 4/09/2018Invisible infrastructure: the future of development 29 E v e r y t h i n g F a a S ?
- 30. - G o n z a l o F e r n a n d e z 4/09/2018Invisible infrastructure: the future of development 30
- 31. Gaston Geenslaan 11/B4 3000 Leuven info@faros.be www.faros.be