State management in serverless architecture using azure durable functions

State management in serverless architecture using azure durable functions

Durable Functions = State management by Azure functions
  • Manage/ Save states in azure functions
  • Handles long running task
  • An extension to the Azure functions and Azure web jobs.
  • They can call other functions synchronously & Asynchronously.
  • They define workflow in code.

What is Serverless Architecture?
  • No server dedicated to a single app
  • Third-party services
  • You don't own a server
  • Custom code that is not always on.

What is State: State is a nothing but the information being retained by the program.

Orchestration Vs Choreography?


Choreography
  • Employs a decentralized approach for service composition

Feature of Durable Azure Functions
  • Client -> Orchestrator -> Activity

What is Orchestration Client
  • Client binding enables you to write a function
  • Orchestration Functions/ Triggers

Activity Functions
  • The basic unit of work in a durable orchestration.

Pattern#1Function chaining
  • Referred a function calling another function. 
Patter#2 Fan-Out/Fan-In
Pattern#3 Async HTTP APIs

Pattern#4 Monitoring

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