Developing Stateful Serverless Workflows using Azure Durable Functions
summary
Shows how Azure Durable Functions (built on the Durable Task Framework) keeps workflow state, checkpoints and replays deterministically while running C# .NET activities. Covers six concrete patterns including function chaining, fan-out/fan-in and the human interaction pattern, and demonstrates a blob-triggered orchestration that enqueues to Azure Service Bus, calls Twilio for SMS and SendGrid for email. Explains orchestration constraints (no non-deterministic calls, use context APIs), retry/timer strategies, durable entities and a GitHub template that runs end-to-end. The demo workflow works and delivers messages and queue entries as expected.
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chapters (13)
- 0:00Start
- 2:04The Dining Philosophers Problem
- 4:19What is Really Server-less?
- 5:26Serverless Sweet Swedish "Fika" Comparison
- 8:27Azure Durable Functions
- 9:45Supported Programming Languages
- 10:11Durable Function Types
- 16:48Function Chaining Pattern
- 17:20Function Chaining in ACTION!
- 19:39Serverless Function Chaining Example
- 23:23Monitor Pattern
- 25:11Aggregator (Stateful Entities)
- 27:14Developing Azure Functions
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