Serverless 101 in Montreal
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The document provides an overview of serverless computing, explaining its history, benefits, and use cases, particularly in event-driven architectures. It discusses the growing momentum behind serverless technologies, noting that 37% of IT decision-makers have adopted them, as serverless allows for cost-effective scaling based on actual usage. Additionally, it offers insights on getting started with serverless, including a demo using the OpenWhisk CLI and predictions for the future of cloud-native transformation.
Serverless 101 in Montreal
- 1. The What, Why and How of Serverless in the Real World Serverless 101
- 2. Aaron Williams Co-Founder, CEO Funcatron @_arw_ /williamsaaron /in/aaronwilliams/ [email protected]
- 4. Agenda 1. What the heck is āServerless?ā 2. Why is it gaining momentum? (Why should I care?) 3. How is it being used? (What are the categories of good use cases?) 4. How can I use it? 5. DEMO 6. Whatās next? 7. Q&A
- 5. 1. What the heck is āServerless?ā
- 6. M A G I C ?!
- 7. Serverless History It comes down to what you have to care about. Hardware OS Platform Extensions Your App ERA #1 Pre-Cloud (the DARK AGES)
- 8. Serverless History Hardware OS Platform Extensions Your App ERA #2 Cloud + Containers OS Hardware It comes down to what you have to care about. IaaS
- 9. A Quick Sidebar on āDevOpsā Weāve traded more power for more responsibility (by which I mean scripting ā¦ ugh) Developers and managers are starting to feel the pain of this at scale Devs donāt want to learn ops; they just want better interfaces to be better devs OR ?
- 10. Serverless History Hardware OS Platform Extensions Your App ERA #3 Serverless OS Hardware Platform Extensions f() f() f() f()f()f() It comes down to what you have to care about. PaaS IaaS āFaaSā
- 11. ANTZ! Ants are: ā Excellent communicators and hard workers ā Abundant (the total weight of ants on earth equals the total weight of humans) ā Almost all female
- 12. Anatomy of a Function Think events! The message queue is becoming the source of truth Functions are deployed independently, as each dev cycle requires Theyāre also run and scaled independently, as the event queue demands Trigger Event - Event Queue - DB Update - Doc Update - External Call f()f() Result(s) - Event Queue - DB Update - Doc Update - External Call
- 13. Serverless is a Philosophy 1. Microservices architecture 2. Event-driven (āstatelessā) 3. Agile teams development Functions-as-a-Service (FaaS) is an offering, and every cloud has one āServicefulā is probably a better term ā¦ but the āServerlessā ship has sailed What is Serverless?
- 15. 2. Why is it gaining momentum?
- 16. āEvery business will become a software business, build applications, use advanced analytics and provide SaaS services.ā - Smart CEO Guy has
- 19. 37% of IT decision makers have already adopted serverless technologies from Sept 2016 451 Research: Voice of the Enterprise
- 21. The Cost of Serverless What it means: ā No unused capacity (datacenters build for 95% of peak usage; are lucky to reach 25% mean utilization) ā No scale-fails (the 5%!) ā Easier to optimize costs when they are tied directly to the activity of your app ā BUT: it is not automatically cheaper So ā¦ serverless doesnāt mean free? Are you sure? The principle: youāre only billed for function execution (consumed vs. provisioned)
- 24. 3. How is it being used?
- 25. Top Use Cases Functions that are event-driven file updates and notifications; bots; IoT Functions that need to scale payroll-related tasks; ETL / data pipeline tasks Functions that you want abstracted from another service image manipulations; credit checks Functions that are not sensitive to latency (so, not whole web sites, generally) backups; generating reports; other housekeeping
- 27. 4. How can I use it?
- 29. The Cloud Native Transformation
- 32. 5. DEMO TIME!
- 34. Setup Create a BlueMix account : https://console.ng.bluemix.net/registration/ Download the OpenWhisk CLI: https://console.ng.bluemix.net/openwhisk/ ** Make sure you set your namespace and auth key. Clone the sample code: https://github.com/williamsaaron/serverless101-YUL First, letās write some Hello World code just to familiarize ourselves with the CLI ...
- 35. A Weather Bot for Slack Take aways: ā Getting started requires no config (zero ops) ā Almost all of the code we write will be specific for our app ā All clouds offer a free tier
- 36. Sequence: slack_from_location Weather Bot Flow Two scripts, one sequence, and some simple Slack config Letās do it! Action: latlong_from_location Action: forecast_from_latlong Command: forecast montreal Action: post_to_slack
- 37. Quick Recap I know ... bots are lame, but theyāre a good 101-level intro. Review the use cases for better, more complete examples. We did ~0% ops, and ~100% of our code was specific to our app. OpenWhisk is not unique, Lambda from AWS, Cloud Functions from Google and Azure Functions from Microsoft all have the same basic interface (CLI and GUI) (If you have suggestions to improve the demo, things youād like to see more of, please reach out!)
- 39. Some Predictions Latency will become a non-issue Cost savings will be the primary driver through 2018, but developer agility will be the long term value Team work will be a limiting factor Habs win the cup in 2018?!