Limerick DotNet-Azure User Group (LDNA) 14 January 2019 Meetup (https://www.meetup.com/Limerick-DotNet/events/ttzpnqyzcbsb/) Azure Functions primer This time we will review the basics of a major serverless technology: Azure Functions. The idea is to cover all the bases: how to setup a Function, debug, update, scale, secure. Hopefully we will touch some context, like costs and scenarios.

1. Azure Functions Primer
14 January 2019 Giulio Vian

2. Prerequisites
Azure Subscription
Contributor Permissions on a Resource Group
Some development editor

3. Hello, World!
Create a simple function through Azure
Portal

4. Languages (runtime 2.x)
C#, F# (Core 2)
JavaScript/TypeScript (Node 8)
Java 8
Python 3.6

5. Under the hood
IIS Web Site
Language runtimes
Virtual File System

6. Explore the
land
App Service Editor (aka Monaco)
Kudu environment

7. Triggers
HTTP & WebHooks
Timer
Queue & Messaging
 Queue Storage
 Service Bus
Queues & Topics
 Event Grid & Hubs
Files
 O365 (Excel)
 OneDrive, DropBox
 Blob Storage
 FTP
DB
 Cosmos DB
 Microsoft Graph
 Events

8. Configuration
Environment variables
Connection strings
Enable flag

9. Debugging
Run locally
Remote debugging
Logging

10. Deployment
Git repo
Single Zip

11. Enhance
Debug locally
Redeploy & configure
Create using Visual Studio

12. Security
OAuth
Azure Active Directory
Google, Facebook, Twitter, and Microsoft accounts
Keys
Proxies
ISO, SOC, and PCI compliant

13. Durable (i.e. stateful)
Subset runtimes: .Net, JS
POCO

14. Manage
Security
Monitoring

15. Scenarios
Short duration
Stateless
Organized

16. Costs (monthly)
total number of requested executions for all
functions (first million free)
$0.20 per million executions
gigabyte seconds = average memory size in
gigabytes by the time in milliseconds it takes to
execute
$0.000016/GB-s

17. Conclusions

18. Develop locally, deploy globally

19. References
https://docs.microsoft.com/en-us/azure/azure-functions/
https://azure.microsoft.com/en-us/resources/videos/ignite-
2018-azure-functions-internals/
https://markheath.net/post/remote-debugging-azure-
functions
Dos and Don'ts for Serverless and Azure Functions - Jeff
Hollan https://www.youtube.com/watch?v=kvTostlJp7M
https://github.com/sjwaight/funcs-cd-demo
https://github.com/Azure/azure-functions-host/tree/dev/test
https://medium.com/@jeffhollan

20. Volunteers?

21. Thanks to our sponsors!