Reverse Proxy

Experiencing authentication errors after some time?

If you notice that users are being logged out or receiving authentication errors after a period of time, this is likely related to how Supabase refreshes the access_token. Supabase periodically attempts to refresh authentication tokens, which requires sending and receiving larger HTTP headers. If your reverse proxy is not configured to handle these larger headers, the token refresh process may fail, resulting in errors for your users.

To resolve this, you need to adjust your reverse proxy settings to allow for larger header sizes and longer timeouts. Below are recommended settings for Nginx:

proxy_buffer_size        128k;
proxy_buffers            4 256k;
proxy_busy_buffers_size  256k;

proxy_connect_timeout    60s;
proxy_read_timeout       60s;
proxy_send_timeout       60s;