Slides van m'n intro into Azure Functions en Serverless welke ik op devNetNoord heb gebruikt. Ik behandel hier enkele best practices, wat is er mogelijk met serverless en FaaS, waar moet je om denken en waarom wil je het gebruiken.

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Serverless...
Hoe, wat en vooral Waarom!

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“If your PaaS can efficiently start instances in 20ms that run for
half a second, then call it serverless.”
Adrian Cockcroft - VP Cloud Architecture Strategy AWS

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Serverless

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De echte
belofte
van de Cloud

12. @Jan_de_Vhttps://www.troyhunt.com/serverless-to-the-max-doing-big-things-for-small-dollars-with-cloudflare-workers-and-azure-functions/

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Solution
design

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Event based

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Best Practices

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1. One func, one thing

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2. Avoid funcs calling funcs

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3. Zero libs if possible

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4. Avoid RDBMS

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5. One func per route

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6. Async (queues)

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7. Data flows not data lakes

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8. Know how it will scale

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Paul Johnston
• https://twitter.com/PaulDJohnston
• https://medium.com/@PaulDJohnston/serverless-best-practices-
b3c97d551535
• ServerlessDays CoFounder (Jeff)
• ex AWS Serverless Senior Developer Advocate

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Cosmos DB

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GET
POST
Azure cache
UPDATE
Queue TRIGGER
Cosmos DB
Change feed

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Azure Functions
Triggers
Bindings

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{
"disabled": false,
"bindings": [
{
"type": "queueTrigger",
"direction": "in",
"name": "myQueueItem",
"queueName": "myqueue-items",
"connection": "MyStorageConnectionAppSetting"
},
{
"type": "httpTrigger",
"name": "req",
"direction": "in",
"dataType": "binary"
}
]
}

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Project voorbeelden
• CFP Exchange
• Service bus binding
• Imperative binding met Blob storage
• FunctionsWithAuthentication
• Http triggers met authenticatie
• Minifier
• Volledig serverless oplossing

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V2 > V1

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Questions, contact
https://github.com/Jandev
@Jan_de_V
jandv@4dotnet.nl
https://jan-v.nl

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