What are some common causes of error 521?

By: USER7586
23 Agustus 2025 Support 5 minutes
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Grade: Education Subject: Support
What are some common causes of error 521?
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Common causes include high traffic spikes, DDoS attacks, insufficient server resources (CPU, memory, bandwidth), poorly optimized code, and inefficient database queries. Rapid growth in website visitors can also trigger the issue.
Answered on 23 Agustus 2025

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