Azure Function App: Http Trigger vs. Timer Trigger

Question

I am trying to determine which Azure Function I should use (between Http Trigger vs. Timer Trigger).

I have SDK which has logic to pull data from a third party API (using Web Service).

Since I only need to pull data once a day, I think Timer Trigger would work.

I am trying to also move data from Azure Function to Azure Data Factory (ADF) for next portion of my project.

My question is, what are best cases to use Http Trigger?

I learned that Http Trigger has a webhook where it automatically triggers ADF (Azure Data Factory).

I have read and watched YouTube videos about Http Trigger, but they did not explain about "When" to use.

It mentioned about "Http Request" which I believe is something made by a client, but I, as a client, do not know when data gets updated, correct?

I am not sure how Http Trigger gets triggered.

Does Http Trigger trigger when data from source changes?

If that is the case, Http Trigger and ADF can run anytime throughout the day, correct?

Thank you.

Ghassen Sultana · Accepted Answer · 2021-11-09 21:10:11Z

2

what are best cases to use Http Trigger?

In my work, I use Http Trigger when the final user or an API will trigger the action, for example when the user click on a button in the front, it will trigger the azure function that do a certain action.

Does Http Trigger trigger when data from source changes?

No, Http trigger will be triggered only when the the http request consumed/called .

answered Nov 9, 2021 at 21:10

Ghassen Sultana

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5 Comments

Java Over a year ago

How do we schedule Http Trigger to run? Is it only be possible by running ADF (Azure Data Factory)? My next question is: my SDK uses Web Services. If that is the case, do I have to use Http Trigger?

Ghassen Sultana Over a year ago

Case 1 : you create a Timer Trigger if you want to schedule the azure function to be executed each day. Case 2 : you create an HTTP Trigger, and you create another process that consume it, for example you create an azure function that use HTTP trigger and you create a logic apps that has a schedule trigger that consume that API or a cran job that consume the azure function. - the trigger depends on the scenario. if you want to pull data once a day it's better to use time trigger, even if you use time trigger, even if AZ function is time triggered, it can consume HTTP requests.

Java Over a year ago

Thank you so much! I got stuck on "using web services" on documentation for my SDK, so I wanted to get confirmation whether I could use Timer Trigger. Since you mentioned that Timer Trigger is ok with web services, I would just create Timer Trigger and connect with Azure Data Factory to pull data. Would Azure Data Factory work? Thank you bunch!

Ghassen Sultana Over a year ago

if you want to move data Azure Data Factory is the way to go. ( ps: if the azure function rôle is just to trigger the Azure Data Factory you can configure a Timer trigger directly in ADF learn.microsoft.com/en-us/azure/data-factory/… )

Java Over a year ago

Does Http Trigger require using Rest API?

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