Use FrozenDictionary instead of Dictionary.

[InCerryGit]

Use FrozenDictionary instead of Dictionary in scenarios where the dictionary remains unchanged to improve performance.

benchmark codes:

using System.Collections.Frozen;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

_ = BenchmarkRunner.Run<DictionaryBenchmark>();

[MemoryDiagnoser]
[Orderer(BenchmarkDotNet.Order.SummaryOrderPolicy.FastestToSlowest)]
public class DictionaryBenchmark
{
    private static readonly Dictionary<string, string> _dictionary = new Dictionary<string, string>
    {
        {
            "Config.Add", string.Empty
        },
        {
            "Config.AddRange", string.Empty
        },
        {
            "Config.EnvSync", string.Empty
        },
        {
            "Config.Edit", string.Empty
        },
        {
            "Config.Delete", string.Empty
        },
        {
            "Config.DeleteSome", string.Empty
        },
        {
            "Config.Offline", string.Empty
        },
        {
            "Config.OfflineSome", string.Empty
        },
        {
            "Config.Publish", string.Empty
        },
        {
            "Config.Publish_API", string.Empty
        },
        {
            "Config.Rollback", string.Empty
        },
        {
            "Config.Rollback_API", string.Empty
        },
        {
            "App.Add", string.Empty
        },
        {
            "App.Edit", string.Empty
        },
        {
            "App.Delete", string.Empty
        },
        {
            "App.DisableOrEanble", string.Empty
        },
        {
            "App.Auth", string.Empty
        },
        {
            "Node.Add", string.Empty
        },
        {
            "Node.Delete", string.Empty
        }
    };

    private static readonly FrozenDictionary<string, string> _frozenDictionary = _dictionary.ToFrozenDictionary();

    private static readonly string[] _keys = _dictionary.Keys.ToArray();

    [Benchmark]
    public void Dictionary()
    {
        for (var i = 0; i < _keys.Length; i++)
        {
            _ = _dictionary[_keys[i]];
        }
    }

    [Benchmark]
    public void FrozenDictionary()
    {
        for (var i = 0; i < _keys.Length; i++)
        {
            _ = _frozenDictionary[_keys[i]];
        }
    }
}

result:

BenchmarkDotNet v0.13.12, Windows 11 (10.0.22631.3155/23H2/2023Update/SunValley3)
Intel Core i7-14700K, 1 CPU, 28 logical and 20 physical cores
.NET SDK 8.0.201
  [Host]     : .NET 8.0.2 (8.0.224.6711), X64 RyuJIT AVX2
  DefaultJob : .NET 8.0.2 (8.0.224.6711), X64 RyuJIT AVX2


| Method           | Mean      | Error    | StdDev   | Allocated |
|----------------- |----------:|---------:|---------:|----------:|
| FrozenDictionary |  52.90 ns | 0.415 ns | 0.368 ns |         - |
| Dictionary       | 108.02 ns | 0.293 ns | 0.274 ns |         - |

[kklldog]

厉害了我的总！
Thanks a lot.