HybridCache: Disabled Local Cache returns InvalidData warning

[Thwani47]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

This may be a case of me missing something trivial, but I can't seem to figure it out.

I'm working on a POC for the HybridCache for one of our internal libraries and I want to allow consumers the ability to decide whether they want to enable or disable the local cache. I'm using Couchbase as the L2 cache and I have a pretty basic configuration

builder.Services.AddCouchbase(builder.Configuration.GetSection("Couchbase"));
builder.Services.AddDistributedCouchbaseCache(options =>
{
  options.BucketName = "cachebucket";
});

builder.Services.AddHybridCache(options =>
{
  options.DefaultEntryOptions = new HybridCacheEntryOptions
  {
    Flags = HybridCacheEntryFlags.DisableLocalCache
  };
});

[HttpGet(Name = "GetWeatherForecast")]
public async Task<IEnumerable<WeatherForecast>> Get()
{
    return await _hybridCache.GetOrCreateAsync("weather-forecast", factory: async _ => await GetData());
}

private static async Task<WeatherForecast[]> GetData()
{
    await Task.Delay(1000 * 5);  // wait for for 5 seconds
    var data =  Enumerable.Range(1, 5).Select(index => new WeatherForecast
    {
         Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
         TemperatureC = Random.Shared.Next(-20, 55),
         Summary = Summaries[Random.Shared.Next(Summaries.Length)]
   })
   .ToArray();

    return data;
}

Expected Behavior

When I call the GetOrCreateAsync() method, the initial call fetches the data from the factory as expected. The data is correctly populated to Couchbase as well

On subsequent calls, I expect the L1 cache to be disabled and the data fetched from the L2 cache, but what is happening is that the data is fetched from the factory all the time and I get these warnings on standard output

warn: Microsoft.Extensions.Caching.HybridCache
      Cache backend data rejected: InvalidData.

Steps To Reproduce

No response

Exceptions (if any)

No response

.NET Version

9.0.100

Anything else?

No response