HybridCache: Inconsistent behavior of GetOrCreateAsync in concurrent calls with readonly flags set

[bezaou]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When using the GetOrCreateAsync method in a concurrent scenario with the DisableLocalCacheWrite and DisableDistributedCacheWrite flags set, the factory method is sometimes not called.

This leads to inconsistent behavior when attempting to check if a specific key exists in the cache or not.

Expected Behavior

The factory method should always be invoked when the key does not exist in the cache.

Steps To Reproduce

        var tasks = new List<Task<(bool, bool)>>();
        for (var i = 0; i < 100; i++)
        {
            tasks.Add(Task.Run(async () =>
            {
                var exist = true;

                var result = await _cacheService.GetOrCreateAsync<object, bool>(
                    "test_key",
                    null!,
                    (_, _) =>
                    {
                        exist = false;
                        return new ValueTask<bool>(default(bool)!);
                    },
                    new HybridCacheEntryOptions
                    {
                        Flags = HybridCacheEntryFlags.DisableLocalCacheWrite | HybridCacheEntryFlags.DisableDistributedCacheWrite
                    });

                return (exist, result!);
            }));
        }

        var resultsArray = await Task.WhenAll(tasks);
        var results = resultsArray.ToList();

Exceptions (if any)

No response

.NET Version

dotnet 9

Anything else?

Microsoft.Extensions.Caching.Hybrid with version 9.3.0
Microsoft.Extensions.Caching.StackExchangeRedis with version 9.0.2