502 Bad Gateway error can be caused by a variety of reasons, this article will introduce detailed troubleshooting steps and solutions to help you quickly fix the 502 error and restore your website to normal operation.

Understand the difference between 502 and 504 gateway errors and their common causes, and learn how to troubleshoot and resolve these issues to optimize server performance and improve website reliability.

What is a 502 Bad Gateway error? 502 Bad Gateway is when a web server, acting as a gateway or proxy server, receives an invalid response from an upstream server, such as an application server. This is usually due to the fact that the upstream server is not working properly or is unable to respond in a timely manner...