Guides
PHP-FPM
Guides
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How to fix 503 Service Unavailable
The server is up but refusing work for now: maintenance mode, an overload, or a limit being hit. How to tell which, and clear…
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How to fix 504 Gateway Timeout
The backend is alive but too slow. Find the slow request, raise the right timeout only if the work is genuinely long, and fix…
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How to fix 502 Bad Gateway
A 502 means the web server asked the program behind it for a page and got no usable answer. Find which part failed in…