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fix: disable nginx proxy buffering to enable AI streaming responses #1600

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Merged
gugu merged 1 commit into from
Feb 15, 2026
Merged

fix: disable nginx proxy buffering to enable AI streaming responses #1600

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8 changes: 6 additions & 2 deletions frontend/nginx/default.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,11 @@ server {
add_header referrer-policy 'strict-origin-when-cross-origin';
}
location /api/ {
proxy_pass http://localhost:3000/;
proxy_set_header Host $host;
proxy_pass http://localhost:3000/;
proxy_set_header Host $host;
proxy_http_version 1.1;
proxy_set_header Connection '';

Copilot AI Feb 15, 2026

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Consider adding proxy_set_header X-Accel-Buffering no; to explicitly disable nginx's internal buffering mechanism. While proxy_buffering off; disables the main buffering, X-Accel-Buffering provides an additional layer of control specifically designed for streaming responses and ensures no buffering occurs at any level in nginx.

Suggested change
proxy_set_header Connection '';
proxy_set_header Connection '';
proxy_set_header X-Accel-Buffering no;

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proxy_buffering off;

Copilot AI Feb 15, 2026

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Consider adding proxy_read_timeout configuration to prevent premature connection timeouts during long-running AI streaming responses. SSE connections can remain open for extended periods, and the default nginx timeout (60s) may cause issues with longer AI processing. Add something like proxy_read_timeout 300s; to allow sufficient time for AI responses.

Suggested change
proxy_buffering off;
proxy_buffering off;
proxy_read_timeout 300s;

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proxy_cache off;
}
}
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