best way to store FusionCacheEntryOptions in iConfiguration

[sabbadino]

Problem

Suppose I have an application with many different FusionCacheEntryOptions requirement for different type of items to be cached. I need to store each of such different setting in IConfiguration

it would be nice to reuse the FusionCacheEntryOptions but it is sealed

Solution

If FusionCacheEntryOptions was not sealed i could do something like this

public class MyFusionCacheEntryOptions : FusionCacheEntryOptions {
    // use FusionCacheEntryOptions inherited properties to be used as default in 
    //  builder.Services.AddFusionCache().WithDefaultEntryOptions(

    public List<MyFusionCacheEntryOptionsEntry> CustomCacheSettings { get; init; } = new();
}

public class MyFusionCacheEntryOptionsEntry : FusionCacheEntryOptions {
      public string Name { get; init; } = "";
}

and then I coudl do something like this when i need such settings

 var option = _fusionCacheSettingConfig.CustomCacheSettings.**SingleOrDefault(c => c.Name == "cacheentrytype1");**
   var ret = await _fusionCache.GetOrSetAsync(location, async _ => 
 {
     return await _weatherDataSource.GetCurrentTime(location, throwEx);
 }, **option**);
 return

Alternatives

Is there another declarative, IConfiguration based solution I ma not aware to manage a large set of FusionCacheEntryOptions values ?

[pbolduc]

I suspect the class is sealed for performance reasons. There is nothing stopping you from doing something like this:

        var settings = new Dictionary<string, FusionCacheEntryOptions>();

        string[] names = ["Foo"];
        foreach (var name in names)
        {
            var section = builder.Configuration.GetSection(name);
            var options = new FusionCacheEntryOptions();
            section.Bind(options);

            settings.Add(name, options);
        }

        builder.Services.AddSingleton(settings);

Or you could just wrap the type instead of inheriting from it.

public class NamedFusionCacheEntryOptions
{
    public string Name { get; set; }
    public FusionCacheEntryOptions CacheEntryOptions { get; set; }
}

[sabbadino]

Oh yes, composition over inheritance.. it was actually quite a naive question :)

[jodydonetti]

Hi all, sorry for the delay. Thanks @pbolduc for the hint! @sabbadino did it work?