Intro to Serverless: How to use AWS Lambda

Transcript

1. simalexan Meet Sloba
2. simalexan
3. simalexan
4. simalexan Have you heard of serverless? Its me!
5. simalexan No server management / ops Scales per use Autofailover Don’t pay 
 for idle
6. simalexan Business is more profitable Faster delivery
7. simalexan Code needs to run on servers! Serverless? That’s not the point! You’re an idiot
8. simalexan How to use AWS Lambda on a 
 real-world use case Intro to Serverless
9. simalexan Aleksandar Simovic Senior Software Engineer @ ScienceExchange AWS Serverless Hero coauthor of “Serverless Applications with Node.js” book AWS SAM & Lambda Builders Contributor Co-organizer of JS Belgrade, Serverless Belgrade, Wardley Maps Belgrade meetups
10. simalexan What is 
 serverless, really?
11. @simalexan Server OS Platform App
12. @simalexan
13. @simalexan
14. @simalexan
15. @simalexan
16. simalexan But that Lambda
 runs on
 an AWS server?
17. simalexan It is serverless, 
 the same way WIFI is wireless. Gojko Adzic
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20. simalexan Ok, now I want 
 to hear more…
21. simalexan Event model 
 (with listeners)
22. simalexan Not just AWS Lambda And so many more…
23. simalexan • Node.js, Java, Python, C#, Go, many others as well • Power from 128MB - 3GB • CPU and network allocated proportionately • Synchronous or async • Voice enabled devices • Securely grant access to resources and VPCs • Fine grained control Your own code Simplified resource model Flexible use Flexible authorization AWS Lambda
24. simalexan • Cloud9 - online editor • VSCode, Eclipse tools • Metrics for requests, errors, and throttles • Built-in logs • Use processing, threads, 
 /tmp, sockets • AWS SDK built-in • Persist data using external storage • No affinity or access to underlying infrastructure Authoring functions Monitoring and logging Programming model Stateless AWS Lambda
25. simalexan • Pay for compute time in 100ms increments • No hourly, daily or monthly minimums • No per-device cost • Never pay for idle • 1 million requests FREE every month, every customer Pay-per-use pricing
26. simalexan What can we use 
 this “serverless” for?
27. simalexan • Static websites • Complex web apps • Apps and services • Mobile • IoT • Real-time • MapReduce • Batch • Text / SMS Chatbots • Voice assistants • Voice enabled devices • Machine Learning • AR / VR Web Apps Backends Data processing Chatbots Amazon Alexa Machine learning Common serverless use cases
28. simalexan Who uses Lambda?
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30. simalexan Show me the ones you were personally know or are involved!
31. simalexan Real world use case #1
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34. simalexan CodePen’s problems (2016)
35. simalexan • Team of mostly frontend devs + one DevOps • Ruby on Rails backend • Many preprocessors that needs full isolation • > 200k requests/hour in peak • Unexpected peaks 
 (you never know when some pen will become popular)
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37. simalexan • Full isolation between services
 • Auto-scaling (up to 5000 parallel requests)
 • Decreased infrastructure cost 
 (250 million requests costs $1180/month)
 • More DevOps time for RoR part of the app
 • Frontend developers with superpowers?!
38. simalexan More!
39. simalexan Real world use case #2 MindMup
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41. simalexan • >750,000 users per month • ~$107 / month. • Company size of two people • Migration to serverless - one month MindMup
42. simalexan Real world use case #3 ScienceExchange
43. simalexan • Integration with an accounting SaaS • Constant influx of events • Potential costs $50,000 / year • Necessary for finance, data science and analytics teams • Decided to build the project in-house 
 (estimation 3 months) ScienceExchange
44. simalexan Science Exchange
45. simalexan • Saving $49,990 / year • Development took 2 weeks • Scales automatically • Operational costs: $0.09 per GB ScienceExchange
46. simalexan How can I do it?
47. simalexan Demo Time!
48. simalexan
49. simalexan serverless.pub/book “Serverless Applications with Node.js" claudia40 40% off Hvala!