HTTP

Linux & Systems · 2 min read · 2026-08-14

A process can be alive while the service contract its neighbors depend on is broken.

Observability · 1 min read · 2026-03-27

A probe that follows a redirect can report success for the wrong endpoint and hide an authentication or routing failure.

Production Engineering · 1 min read · 2026-01-13

When a network response is lost, retrying a create request can duplicate the side effect even if the first request succeeded remotely.

Production Engineering · 1 min read · 2025-05-19

A service can be reachable and still be routed through the wrong authentication or application layer.

Caddy & Reverse Proxy · 16 min read · 2024-08-30

Keepalive timeout mismatches can fail a request even while proxy and backend are otherwise healthy.

Web & Control Plane · 1 min read · 2023-10-08

For an intentionally invalid API payload, validation failure proves the request reached the correct application boundary.