Developing Azure Functions

Azure App Services

Florin Angelescu

Azure Cloud Architect

What are triggers?

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• Defines how a function is invoked
• Functions can respond to:
  • HTTP requests
  • Messages in a queue
  • File upload
• Functions must have one trigger

Common trigger types

What are bindings?

 

 

• Simplify connections to external data and services
• Integration is handled behind the scenes
• Keeps code lean with no extra infrastructure management

Input vs. output bindings

 

• Automatically receive a blob file or a database record

 

• Cosmos DB, Event Hubs, or email providers

Input vs. output bindings

 

Multiple bindings

Real-world example

 

• User uploads an image:
  • A blob trigger starts the function
• Input binding supplies the image to the function
• The function might:
  • Resize the picture
  • Add tags
• Output bindings can then:
  • Store the updated image
  • Record metadata in Cosmos DB
  • Send a notification

Let's practice!

Azure App Services