A digital goods store using the Digitax - Elementor Digital Store WooCommerce theme encountered intermittent 502 Bad Gateway errors due to oversized HTTP headers exceeding Nginx’s default FastCGI buffer limits. Increasing the buffer size in Nginx configuration resolved the issue, ensuring smoother handling of large header sizes for complex redirection and cookie management scenarios. Developers should monitor upstream response times to preemptively adjust buffer settings as needed.
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