Articles about Uptimepage

Your API can look "up" and still be broken. A health check returns 200, but real requests time out. The domain resolves on your laptop but not from another country. The port is open, but the TLS certificate expired last night. "Is the API up?" is not one question. It is several questions at different layers, and a single check type only answers one of them. This guide shows what HTTP, TCP, and DNS checks each catch, and how to combine them so you find out about downtime before your users do.