Getting Started with Serverless Architectures using Azure Functions
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This document provides an introduction to serverless architectures using Azure Functions. It defines serverless architectures as applications that depend on third-party services to manage logic and state through short-lived event-triggered functions. The benefits of Azure Functions are discussed, including automatic scaling, consumption-based pricing, and the ability to focus on code instead of servers. Examples are provided of developing Azure Functions through scripting in the portal or compiling in Visual Studio. The document demonstrates chaining multiple functions using queues and deploying functions from the portal or VSTS.
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Getting Started with Serverless Architectures using Azure Functions
- 1. Getting Started with Serverless Architectures using Azure Functions MARC DUIKER
- 2. Marc Duiker Lead Consultant Xpirit Netherlands @marcduiker – mduiker@xpirit.com
- 4. Current situation - Problems Client PlaceOrder Search ValidateOrder CalculatePrice Orders Products Prices Expensive infrastructure Performance issues Teams require synced delivery
- 5. POC to redesign – Conditions & Requirements Client PlaceOrder Search ValidateOrder CalculatePrice Orders Products Prices Uneven & spikey workload 2 weeks Limited budget Fault tolerant Independent delivery
- 8. What are serverless architectures?
- 9. 1. Application that fully depends on a 3rd party service in the cloud to manage logic and state. Multiple interpretations for Serverless
- 10. 2. Application where some code is written by the developer but is run in stateless compute containers that are event-triggered, short lived and fully managed by a 3rd party. Multiple interpretations for Serverless
- 11. • Serverless is a misleading term • Functions as a Service (FaaS) is better “Serverless”
- 13. Serverless architecture with FaaS Client PlaceOrder Gateway Search Validate Order Calculate Price Temp Storage Perm Storage Products Prices
- 14. Why a serverless architecture?
- 15. What we all want • A responsive application • Regardless of workload • Regardless of failures
- 16. Solution: Reactive Systems Responsive Message driven ResilientElastic https://www.reactivemanifesto.org/FaaS enables Reactive Systems
- 17. Serverless architecture with FaaS Client Temp Storage Gateway Search Products PlaceOrder Perm Storage Calculate Price Prices Validate Order
- 18. Serverless architecture with FaaS Client Temp Storage Gateway Search Products PlaceOrder Perm Storage Calculate Price Prices Validate Order
- 19. Benefits of FaaS • Focus on code instead of servers & runtime • Node.js , Python, C#, Java … • Reduced operational costs • Allows easier experimentation • Shorter time to market
- 20. Benefits of FaaS • Consumption based pricing • Resource consumption & number of executions # Executions / month 2m Time / execution 0.5 sec Time consumption 2m * 0.5 = 1m sec Avg memory consumption 1.5 GB Resource consumption 1.5 * 1m = 1.5m GB-s Resource price* 0.000014 Eur / GB-s Resource costs 1.5m * 0.000014 = 21 EUR Execution price* 0.169 EUR/1m executions Execution costs 2m * 0.169 = 0.34 EUR *Based on Azure Functions consumption plan dd 11 Oct 2017 2 1
- 21. Benefits of FaaS • Automatic scaling • Can reduce compute costs for spikey workloads constantspikey
- 22. Disadvantages of FaaS • Learning curve • Limited execution duration • Startup latency • Development tooling
- 23. FaaS offerings AWS Lambda (2014) Google Cloud Functions (2016) Azure Functions (2016)
- 24. How do Azure Functions fit in?
- 25. What is Azure Functions? “Azure Functions is a serverless compute service that enables you to run code on-demand without having to explicitly provision or manage infrastructure.” https://docs.microsoft.com/en-us/azure/azure-functions/
- 26. What is Azure Functions?
- 27. Function Anatomy: Triggers & Bindings Input Output Trigger Code 1 0-n 0-n Function
- 28. Function Anatomy: Function App Input Output Trigger Code Function Function App Settings
- 29. The rise of the Functions WebJobs Functions
- 30. Differences with WebJobs • Seamless integration with Azure services • Azure Storage (Queues, Blobs) • Service Bus (Queues, Topics) • CosmosDB • Event Hubs • Webhooks • Timer • Consumption based pricing • Improved automatic scaling
- 32. Azure Functions Limitations • Max execution duration: 10 min (default 5 min) • Available memory: 1.5 GB
- 34. • Function scripts - Directly in the portal - Visual Studio Code • Compiled Functions - Visual Studio 2017 with Azure Function Tools Developing Functions
- 36. Benefits of Compiled Functions: • Enjoy the VS IDE features • Local debugging • Easier package management • Configure CI/CD pipelines • Reduce cold start time Developing in Visual Studio
- 38. User uploads image Image requires validation Image needs to be analyzed Analysis result need to be stored Use case
- 39. Solution using Azure Functions & Queues images input images to analyze images too large analysis results to store validate analyze store blob DB
- 40. Solution using Azure Functions & Queues Upload images images input images to analyze images too large analysis results to store validate analyze store blob DB
- 41. Solution using Azure Functions & Queues Validate images images input images to analyze images too large analysis results to store validate analyze store blob DB
- 42. Solution using Azure Functions & Queues Analyze images images input images to analyze images too large analysis results to store validate analyze store blob DB
- 43. Solution using Azure Functions & Queues Store analysis data images input images to analyze images too large analysis results to store validate analyze store blob DB
- 44. Solution using Azure Functions & Queues Scope of the demo images input images to analyze images too large analysis results to store validate analyze store blob DB
- 45. Demo: Multiple Functions in one App
- 46. Demo data
- 47. Solution using Azure Functions & Queues Start situation images input images to analyze images too large analysis results to store validate analyze store blob DB 3 3
- 48. Solution using Azure Functions & Queues End situation images input images to analyze images too large analysis results to store validate analyze store blob DB 3 1 2
- 50. ✓ Develop function using the Azure portal ✓ Develop function using Visual Studio ✓ Multiple functions in one Function App ✓ Microsoft Azure Storage Explorer ✓ Function App Logs Developing Functions Demos
- 52. Edit & save scripts in Portal Publish from Visual Studio Deploy straight from source control Deploy from VSTS Deploying Functions
- 54. ✓ Configure deployment using Azure Portal ✓ Configure deployment using VSTS Deploying Functions Demos
- 55. Other scenarios
- 56. Currently you need to provide a message queue to chain functions. Function Chaining & Durable Functions
- 57. Function Chaining & Durable Functions https://azure.github.io/azure-functions-durable-extension/ Durable Functions will use Orchestrator and Action functions making it easier for developers to chain functions.
- 58. Use Functions as Actions Functions & Logic Apps
- 59. Use an API gateway to manage your Functions API Gateway Client PlaceOrder Search ValidateCalculate Temp Storage Perm Storage Products Gateway
- 61. Marc Duiker Lead Consultant Xpirit Netherlands @marcduiker – mduiker@xpirit.com Go and discover endless possibilities with Azure Functions! https://github.com/marcduiker/ demos-serverless-architectures-functions/