Nginx 1.30 Changed the Upstream Defaults—Test Before You Upgrade
Nginx 1.30 defaults upstream proxying to HTTP/1.1 with keepalive enabled. Here is what to inspect, model and test before upgrading.
Linux Operations
Let's Encrypt Profiles Put Renewal Assumptions Under the Microscope
Let's Encrypt's May 2026 profile rollout left classic certificates at 90 days, but made ACME profile choice, challenge paths, hooks, and monitoring harder to ignore.
Written recommendations from Trafik og Veje, Aarhus Municipality (2011) and AgroTech (2010).
