HTTP Status Codes Explained (Full List + What Each One Means)

Every time a browser or an app requests a web page, image, or API endpoint, the server sends back a three-digit status code along with the response. Most people never see these codes because everything works and the page just loads. You only notice them when something breaks, and by then you’re staring at a […]
504 Gateway Timeout: Causes and Fixes

You submit a form, or click through to a page that should load in a second, and instead you’re staring at “504 Gateway Timeout.” The page never comes back at all, it just gives up. A 504 Gateway Timeout means a server acting as a gateway or proxy sent a request to an upstream server […]
What Does 502 Bad Gateway Mean? How to Fix It

You click a link, wait a second, and instead of the page you wanted, your screen shows “502 Bad Gateway.” No article, no product page, no login form. Just an error. A 502 Bad Gateway error means a server acting as a gateway or proxy tried to get a response from another server (the “upstream” […]