Developers still do this:
var client = new HttpClient(); // ❌ NEVER do this
Creating HttpClient per request causes:
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Port exhaustion
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DNS reuse issues
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Slowdown under load
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Socket exceptions
✔ The ONLY Correct Pattern
builder.Services.AddHttpClient();
Or for minimal APIs:
var client = httpClientFactory.CreateClient();
💡 The Life-Saving Insight
If you see:
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random timeouts
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slow downstream calls
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unexplained 60-second delays
…it’s almost always HttpClient mismanagement.