Overcoming Serverless challenges with Durable Functions

on YouTube ↗14m

" summary

Durable Functions on Azure lets workflows persist state to disk and exceed the 10 minute execution limit, enabling long-running approvals and monitors that wait hours or days. It implements concrete patterns: function chaining for ordered ETL steps, fan-out/fan-in parallelism to run hundreds of activities and aggregate results, and human interaction via external events for approvals. Demo runs a 100-image cat/dog classifier that scales out to roughly 5–6 images/sec, showing the pattern works.

AI-written summary · about

" chapters (10)

1. 0:00Intro
2. 0:50Challenges
3. 2:40Durable Functions
4. 3:20Functional Roles
5. 4:35Function Chaining
6. 6:05Fan Out
7. 9:30Monitor
8. 10:30Human Interaction
9. 11:40Homework
10. 13:00Outro

" related talks

• 58mAdvanced Serverless Workflows with Durable FunctionsJeremy Likness · NDC Oslo 2019
• 42mAzure Durable Functions for Serverless .NET OrchestrationChad Green · Øredev 2025
• 58mDeep dive in Durable FunctionsLaurent Bugnion · NDC Oslo 2021
• 48mDelightful Durable Function PatternsAdrienne Braganza Tacke · NDC London 2020
• 38mDeveloping Stateful Serverless Workflows using Azure Durable FunctionsJonah Andersson · Moar Serverless 2022
• 46mDeveloper Fundamentals of Serverless.NET Development with Azure Durable FunctionsJonah Andersson · Build Stuff 2021
• 28mAzure Durable Functions - Stateful workflow on top of Stateless ArchitectureDebasis Saha · C# Corner Annual Conference 2022 - Hyderabad
• 39mIntroducing Azure Functions for serverless .NETCarl in 't Veld · Future Tech 2019