Summary of HTTP Error issues

1.300 Error

Under Baidu, request redirect

2.403: Limited request, insufficient permissions

404: The request is invalid and the resource accessed does not exist

3.500: Server hangs up, view server;

502:a. Gateway/proxy Error, view Ngnix error log;

B. There are too many current links on the server, causing the server to not give a normal response. View the maximum number of server connections;

Basic refresh: F5, from the local hard disk to fetch the data to the browser, do not re-send the request to the server;

Refresh from server: Ctrl+f5, re-initiate the request to the server;

503: The server temporarily unable to process the request, may be the server has made the limit of the number of visits;

504: Request timed out;

Summary of HTTP Error issues