Exam AZ-204 topic 2 question 46 discussion

Actual exam question from Microsoft's AZ-204

Question #: 46
Topic #: 2

You develop Azure Durable Functions to manage vehicle loans.

The loan process includes multiple actions that must be run in a specified order. One of the actions includes a customer credit check process, which may require multiple days to process.

You need to implement Azure Durable Functions for the loan process.

Which Azure Durable Functions type should you use?

A. orchestrator
B. client
C. entity
D. activity

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Suggested Answer: A 🗳️

by imanonion at Jan. 8, 2023, 2:38 a.m.

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imanonion

Highly Voted 2 years ago

Selected Answer: A

An orchestrator function is the appropriate type of Azure Durable Function to use in this scenario, because it allows you to define the overall flow of the loan process and call other functions or activities as needed. The credit check process can be implemented as a separate activity function, which can be called by the orchestrator function and run in parallel with other actions in the loan process. Entity functions are designed for use cases where you need to perform operations on a shared piece of state in a reliable and atomic way, such as a distributed queue or counter. In this scenario, it does not appear that there is a need to use entity functions. There is no such thing as a "client" function in Azure Durable Functions. "Activity" functions are called by orchestrator functions to perform specific tasks, but the orchestrator function is the one that defines the overall flow of the loan process, so it is the correct answer in this case.

upvoted 27 times

oskx2

10 months, 2 weeks ago

There are client functions, read the doc: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-types-features-overview#client-functions " The primary way to deliver these messages is by using an orchestrator client binding or an entity client binding from within a client function."

upvoted 6 times

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