C# - Performance implementing Large JSON Deserialization Using System.Text.Json
I'm attempting to set up I'm reviewing some code and I've been banging my head against this for hours... After trying multiple solutions online, I still can't figure this out. I'm working with important performance optimization when deserializing large JSON files (around 50MB) using `System.Text.Json` in .NET 6. While the deserialization works correctly, it takes an excessive amount of time, causing the application to freeze temporarily during the operation. I tried using `JsonSerializer.DeserializeAsync`, but the performance is still poor compared to using `Newtonsoft.Json`. Here's a simplified version of my code: ```csharp public async Task<MyObject> DeserializeJsonFileAsync(string filePath) { using FileStream stream = File.OpenRead(filePath); return await JsonSerializer.DeserializeAsync<MyObject>(stream); } ``` I've also experimented with stream options and tried to enable `JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase`, but it doesn't seem to affect performance. My `MyObject` class has quite a few properties, and I'm worried that the structure might be causing some overhead. Should I consider a different approach, or are there specific optimizations I could apply to improve the deserialization performance? Any advice would be greatly appreciated! I'm working on a application that needs to handle this. This is happening in both development and production on Windows 11. I appreciate any insights! I'm using C# latest in this project. Any help would be greatly appreciated!