Mastering Azure Serverless Computing

Azure Functions best practices for scalability and performance

Here are some best practices for better scalability and performance of Azure Functions:

• Reuse connections to external resources—for example, by using a static HTTPClient instead of creating one for every request. Resources can be exhausted very quickly if they are not reused.
• Don't deploy unused code in production: since Azure functions in the consumption plans are also billed based on memory usage, if you deploy code or assets that are not needed, you end up paying more money.
• Use durable functions or logic apps to handle long-running operations and cross-function communication instead of traditional functions.
• Functions should be stateless and idempotent because it's not guaranteed ...