Understanding HTTP Status Codes
200 OK
Everything is perfect! The server received the request and sent back the page successfully.
301 / 302 Redirect
The page has moved. 301 is a permanent move (good for SEO), and 302 is temporary.
404 Not Found
The server can't find the page. This happens if the URL is wrong or the page was deleted.
500 / 503 Error
Internal Server Error. 503 usually means the site is under maintenance or overloaded with traffic.
Why Monitor Response Time?
Speed matters. A response time under 200ms is excellent. Anything over 500ms is noticeable by users, and over 2 seconds can hurt your Google rankings and user experience.