.tip

Jun 30, 2026 · one of the small things

Put deploys on the graphs

Most incidents start within minutes of a deploy, and the fastest diagnosis is seeing the line bend right after the marker.

curl -X POST "$METRICS/events" -d '{"title":"deploy web 4.2.1","tags":["deploy","web"]}'

One call at the end of the deploy pipeline. Every latency and error panel shows a vertical line, and "what changed" answers itself.

observabilityoperations

~/tips/today — 2026-09-04

~cat tips/today

Session cookies: HttpOnly, Secure, SameSite=Lax

securityhttp

Three attributes, each closing a class of attack. HttpOnly keeps scripts from reading it. Secure keeps it off plain HTTP. SameSite=Lax stops it being sent on cross-site POSTs, which is most CSRF.

Set-Cookie: session=...; HttpOnly; Secure; SameSite=Lax; Path=/; Max-Age=1209600

Strict breaks arriving from an external link while logged in. Lax is the default worth keeping.

↵ open y yesterday l ls /tips

esc close