Orchestrate your Azure Functions with Durable Functions @ Azure Thursday Meetup

These are the slides of the presentation I gave at the Azure Thursday Meetup on the 1st of February 2018 at Ordina.

The source code for the demos I gave can be downloaded from this GitHub repository: https://github.com/marcduiker/demos-azure-durable-functions (see the Readme for instructions).

Transcript

2. Marc Duiker Lead Consultant @ Xpirit
3. Marc Duiker Durable Functions • What are orchestrations? • Why do we need them? • What is Durable Functions? • Local development • Examples • Function chaining • Fan-out/Fan-in • Stateful Singleton • Closing remarks
4. Marc Duiker Durable Functions
5. Marc Duiker Durable Functions Orchestration? Orchestration is the automated arrangement, coordination, and management of computer systems, middleware, and services.
6. Marc Duiker Durable Functions
7. Marc Duiker Durable Functions Control flow
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14. Marc Duiker Durable Functions Durable Functions is based on
15. Marc Duiker Durable Functions New Trigger Bindings [OrchestrationClient] DurableOrchestrationClient
16. Marc Duiker Durable Functions DurableOrchestrationClient
17. Marc Duiker Durable Functions New Trigger Bindings [OrchestrationTrigger] DurableOrchestrationContext
18. Marc Duiker Durable Functions DurableOrchestrationContext
19. Marc Duiker Durable Functions New Trigger Bindings [ActivityTrigger] DurableActivityContext
20. Marc Duiker Durable Functions DurableActivityContext
21. Marc Duiker Durable Functions Invocations, Checkpoints & Replay Function invocation Execution history
22. Marc Duiker Durable Functions Orchestration Functions should be Deterministic
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24. Marc Duiker Durable Functions Visual Studio 2017 15.5+ - “Azure development tools” workload - Extension: Azure Functions & Web Jobs Tools - Azure Storage Emulator Local development
25. Marc Duiker Durable Functions Demo!
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27. Marc Duiker Durable Functions Function chaining
28. Marc Duiker Durable Functions Demo: Use case As a speaker I want to arrive early at the next meetup so I still have some time to tweak my slides at the very last moment.
29. Marc Duiker Durable Functions Demo: Control flow In - meetup group - departure address - travel mode Out - event name - group name - destination address - departure time - duration Returns one event For the event returned by FA1
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31. Marc Duiker Durable Functions Fan-out/fan-in FA1 returns a collection of items FA2 is called for each of the items from FA1
32. Marc Duiker Durable Functions Demo: Use case As a meetup visitor I want a list of relevant events, sorted by travel duration so I can choose which events I will attend.
33. Marc Duiker Durable Functions Demo: Control flow In - search text - max nr of events - departure address - travel mode Out Collection of - event name - group name - destination address - departure time - duration For each event returned by FA1 Returns collection of events
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50. Marc Duiker Durable Functions Demo Managing a list of names in a stateful singleton.
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55. Marc Duiker Durable Functions • Orchestration Functions can only call Activity Functions in the same Function App. • Duration timers can’t last longer than 7 days. • Keep your orchestration small. • What changes together should be deployed together. Closing remarks
56. Marc Duiker Durable Functions blog.marcduiker.nl @marcduiker