My backend needs to collect data. This takes a lot of time, so I don’t want to collect the data with every API call, but instead cache it in memory. The cache should be updated regularly in a background thread. However, it should also be possible to explicitly initiate the update via an API call. How could this be implemented in .NET Core?
This example shows how this could be solved.
You can find further explanations in my blog post Cache data in memory and update it regularly via a background service (.NET Core MinimalAPI example)
For testing you can open a command line and use curl
curl -s https://localhost:59999/summary/authors
curl -d "" https://localhost:59999/triggerCacheUpdate/authors
The port 59999 must be replaced with the port that Visual Studio entered in file .\InMemCacheMinimalApi\Properties\launchSettings.json after the first startup on your machine.