How to reuse Azure Functions premium plan?

Question

I have an Azure Function Premium plan for a C# function. I need this because my function needs to be deployed inside a VNET. Now I need to deploy another Python function. Can I reseuse my Premium plan? If I understand correctly it's a "server" which is running forever but which is only "used" when a function is triggered. Running two such a servers will be expensive and overkill for my functions.

Answer 1

Yes, you can run multiple Azure Function Apps in the same premium hosting plan, but the limitation is they should both run on same operating system either windows or Linux.

Running two such a servers will be expensive

Yes, it is expensive because of pre-warmed instances and always ready instances but predictable pricing.

The main 3 factors considered on Azure Functions are Application Insights, Network Traffic and Storage Account.

As per my experience,

• Storage account is used by Azure functions for its internal state in which these costs are negligible.
• When the functions are sending the traffic the outside world (Egress traffic), then the networking fees would occur which is usually low but may raise cost for high-volume data sending by the Azure Function.
• Application Insights cost is the main factor we have to monitor and optimize. Refer to these few workarounds (Thread1 & Thread2) for optimizing cost in Azure Function - App Insights.