Question

Can server's in memory cache be used in Azure?

Answer 1

There is an option of using Microsoft.Extensions.Caching.Memory to store the data and reducing the amount of storage space. However, the space to be used will be way lesser than the one that follows the memory size on the Azure App service. This is usually restricted by a limit as given by Microsoft for its multiple layers. 

You can access the Microsoft documentation for the same from here: https://docs.microsoft.com/en-us/dotnet/api/microsoft.extensions.caching.memory.memorycache?view=dotnet-plat-ext-3.1