Recently, I developed an ASP.NET Core application that can query a local data file for IP address information. The application is deployed to Azure Container Apps, and the data file is mounted in Azure File Share as a volume for the container. There is another job that will update the data file every day on schedule. The application would not read the entire data file on each request for performance concerns, it would load the data into memory on start up. The blog post will explain how to reload the data on the fly without downtime.
