HTTP
3 guides tagged “HTTP”.
- 502 vs 503 vs 504: What's the Difference? 502 is a bad upstream response, 503 means the service cannot serve now, and 504 is a proxy timeout. Each points somewhere different.
- What Is an SSL/TLS Handshake (and Why Does It Fail)? TLS agrees on a version and cipher, verifies the certificate, and derives keys. Most failures are a name, a chain, or a protocol mismatch.
- What Is a 504 Gateway Timeout (and How Do You Fix It)? A 504 means a proxy waited for an upstream server that did not answer in time. The fix is usually to make the slow operation faster, not to raise the timeout.