single Azure Function with 2 timer triggers

Not sure if this can be done as I'm finding conflicting answers across the net.

I have a single Azure function app with :

[Function("RetrieveMongoData")]
 public void Run([TimerTrigger("0 0 * * * *")] TimerInfo myTimer)
 { .....

  [Function("RetrieveMongoDataNL")]
  public void Run([TimerTrigger("0 5 * * * *")] TimerInfo myTimer)
  {....

each function are in their own class. When I hit F5 in VS to debug, the first function above gets hit and I can debug that function. Placing a breakpoint in the second function and it never get's hit. Can I create the triggers like this or is there a better way?

I'm doing it this way because so much of my code that gets called will be shared between the 2 triggers.

Solution

When you will create two timer trigger functions in one function app locally, then there will be two individual .cs file created for each function.
Verify, whether the CRON expressions are correct. For instance, I have used * * * * * and */2 * * * * expressions in my function.
Make sure Azurite is running while debugging locally. You can start the Azurite by clicking Fn + F1 and then select Start Azurite in vs code. Also set AzureWebJobsStorage to UseDevelopmentStorage=true in local settings file.

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet-isolated"
  }
}

RetrieveMongoData.cs :-

[Function("RetrieveMongoData")]
public void Run([TimerTrigger("* * * * *")] TimerInfo myTimer)
{
    _logger.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
            
    if (myTimer.ScheduleStatus is not null)
    {
        _logger.LogInformation($"Next timer schedule at: {myTimer.ScheduleStatus.Next}");
    }
}

RetrieveMongoDataNL.cs :-

[Function("RetrieveMongoDataNL")]
public void Run([TimerTrigger("*/2 * * * *")] TimerInfo myTimer)
{
    _logger.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
            
    if (myTimer.ScheduleStatus is not null)
    {
        _logger.LogInformation($"Next timer schedule at: {myTimer.ScheduleStatus.Next}");
    }
}

Both the functions are being triggered successfully locally.

Azure Functions Core Tools
Core Tools Version:       4.0.6280 Commit hash: N/A +421f0144b42047aa289ce691dc6db4fc8b6143e6 (64-bit)
Function Runtime Version: 4.834.3.22875

[2025-01-06T03:50:28.958Z] Found C:\Users\****\Documents\functionApp\79326599\79326599.csproj. Using for user secrets file configuration.
[2025-01-06T03:50:31.164Z] Worker process started and initialized.

Functions:

        RetrieveMongoData: timerTrigger

        RetrieveMongoDataNL: timerTrigger

For detailed output, run func with --verbose flag.
[2025-01-06T03:50:36.170Z] Host lock lease acquired by instance ID '0000000000000000000000000D2022A4'.
[2025-01-06T03:51:00.050Z] Executing 'Functions.RetrieveMongoData' (Reason='Timer fired at 2025-01-06T09:21:00.0275508+05:30', Id=f923c3b2-9537-4ce4-b0da-74473ad1d4a7)
[2025-01-06T03:51:00.212Z] Next timer schedule at: 06-01-2025 09:21:00
[2025-01-06T03:51:00.212Z] C# Timer trigger function executed at: 06-01-2025 09:21:00
[2025-01-06T03:51:00.254Z] Executed 'Functions.RetrieveMongoData' (Succeeded, Id=f923c3b2-9537-4ce4-b0da-74473ad1d4a7, Duration=207ms)
[2025-01-06T03:52:00.000Z] Executing 'Functions.RetrieveMongoData' (Reason='Timer fired at 2025-01-06T09:21:59.9996713+05:30', Id=34bf0d9d-65cf-4e9f-8770-07b56366eb37)
[2025-01-06T03:52:00.015Z] Executing 'Functions.RetrieveMongoDataNL' (Reason='Timer fired at 2025-01-06T09:22:00.0152879+05:30', Id=9266d492-8c96-4b9b-b2a0-8337a7b2a4d1)
[2025-01-06T03:52:00.100Z] C# Timer trigger function executed at: 06-01-2025 09:22:00
[2025-01-06T03:52:00.103Z] Next timer schedule at: 06-01-2025 09:22:00
[2025-01-06T03:52:00.107Z] C# Timer trigger function executed at: 06-01-2025 09:22:00
[2025-01-06T03:52:00.108Z] Next timer schedule at: 06-01-2025 09:22:00
[2025-01-06T03:52:00.109Z] Executed 'Functions.RetrieveMongoDataNL' (Succeeded, Id=9266d492-8c96-4b9b-b2a0-8337a7b2a4d1, Duration=94ms)
[2025-01-06T03:52:00.108Z] Executed 'Functions.RetrieveMongoData' (Succeeded, Id=34bf0d9d-65cf-4e9f-8770-07b56366eb37, Duration=109ms)

Then, I have deployed these function to an App service plan function app and able to get expected response.

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