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#debugging

2 stories

Networking & DNS

Debugging HTTP with curl: headers, DNS overrides, timing and TLS

Daniel Tran · Oct 7, 2025 · 8 min read

Most HTTP bugs can be pinned down with one tool you already have. This guide shows the curl options we use daily: verbose output, header-only requests, --resolve and --connect-to for testing servers before DNS changes, timing breakdowns, protocol versions and TLS checks.

Banner: a repeatable debugging method using reproduction, git bisect isolation and a root-cause fix

Engineering Practice

A repeatable debugging method: reproduce, isolate with git bisect, fix the cause

Daniel Tran · Oct 3, 2024 · 9 min read

Debugging is faster as a method than as inspiration. The six steps we use on every hard bug, from a reliable reproduction to a regression test, walked through on a real slowdown we isolated among 143 commits with an automated git bisect run.