Nginx alias vs root Directive Causing 404 on Static Files
root and alias both map a request path to a filesystem location, but they combine the matched location path with the filesystem path differently — mixing up...
Category
Nginx
Fixes for reverse proxy errors, SSL configuration, and caching issues in Nginx.
Nginx gRPC Reverse Proxy Returning HTTP 502 or HTTP 405 Error
Proxying gRPC traffic through Nginx requires specific configuration distinct from regular HTTP proxying — a 405 typically means Nginx is treating the request...
Nginx Subfolder Redirect Losing Query String Parameters
A redirect that drops query string parameters happens because Nginx doesn't automatically forward them to the redirect target — unlike some other systems where...
Nginx "Upstream Timed Out While Reading Response Header From Upstream"
This error means Nginx gave up waiting for your backend to respond within the configured timeout window — the fix depends on determining whether the backend is...
Nginx 503 Service Temporarily Unavailable Under High Traffic Load
A 503 specifically appearing under high traffic load, rather than consistently, means Nginx (or the application behind it) is running out of capacity to handle...
Nginx Rate Limiting Blocking Legitimate API Users Behind Cloudflare IP
When Nginx rate limiting seems to block far more legitimate traffic than expected, especially many different users seemingly all hitting the limit...
Nginx SSL Handshake Failed Error on Specific Mobile Devices or Old Clients
SSL handshake failures affecting only certain devices — often older phones, older browsers, or specific client libraries — while working fine for most...
Nginx Subfolder Reverse Proxy Returning 404 for Relative Static Assets
When an application works fine at the domain root but returns 404s for its own static assets once reverse-proxied under a subfolder, the application itself is...
Nginx "Upstream Sent Too Big Header While Reading Response Header From Upstream"
This error means the response headers sent by your backend exceed the buffer size Nginx has allocated to hold them — Nginx's default buffer sizes are...