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C# “HttpClient Freezing Request” — The Hidden Deadlock: Sync-over-Async

- 12.12.25 - ErcanOPAK

Developers still do this:

var response = client.GetStringAsync(url).Result;

In ASP.NET = 100% guaranteed deadlock.

✔ The Real Fix

Make the entire pipeline async:

var response = await client.GetStringAsync(url);

💡 Hidden Detail

ASP.NET sync context blocks continuation → hard deadlock.

Related posts:

C# “Random Freezes” — The REAL Cause: Async → Sync Deadlocks

C# Dependency Injection Containers Slow Startup

C# “List Reallocations” — Stop Hidden Performance Loss

Post Views: 4

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